Reserve and Configure AGW Connection Point

IMS-ALG

Context/Context Request

M

This information element indicates the existing context or requests a new context for the bearer termination.

Emergency Call Indicator

O

This information element identifies the call as emergency call that requires a preferential handling.

Priority information

O

This information element requests the IMS-AGW to apply priority treatment for the terminations and bearer connections in the specified context.

Bearer Termination Request

M

This information element indicates the existing bearer termination or requests a new bearer termination for the bearer to be established.

Local IP Resources

O

This information element indicates the resource(s) for which the IMS-AGW shall be prepared to receive user data. May be excluded (i.e. "-" is used in SDP m-line) if no transcoding or media related functions are required.

For terminations supporting any combination of video, audio and messaging this IE shall contain separate resources per stream.

ReserveValue

O

This information element indicates if multiple local resources are to be reserved.

This information element shall be included if a speech codec and auxiliary payload types are configured.

Remote IP Resources

O

This information element indicates the resource(s) for which the IMS-AGW shall send data.

For terminations supporting any combination of video, audio and messaging this IE shall contain separate resources per stream.

May be excluded (i.e. "-" is used in SDP m-line) if no transcoding or media related functions are required.

Local Connection Address Request

M

This information element requests an IP address and port number(s) on the IMS-AGW that the remote end can send user plane data to.

For terminations supporting any combination of video, audio and messaging this may contain multiple addresses.

Remote Connection Address

M

This information element indicates the remote IP address and port number(s) that the IMS-AGW can send user plane data to.

For terminations supporting any combination of video, audio and messaging this may contain multiple addresses.

Notify termination heartbeat

M

This information element requests termination heartbeat indications. This information element shall be included when requesting a new bearer termination. Otherwise the information element is optional.

Notify Released Bearer

O

This information element requests a notification of a released bearer.

Latching Requirement

O

This information element indicates that the IMS-AGW should (re)latch onto the address of received media packets to determine the corresponding destination address.

IP Realm Identifier

O

This information element indicates the IP realm of the bearer termination.

Remote Source Address Filtering

O

This information element indicates that remote source address filtering is required.

Remote Source Address Mask

C

This information element provides information on the valid remote source addresses. This is required if a range of remote source address filtering is required.

Remote Source Port Filtering

O

This information element indicates that remote source port filtering is required.

Remote Source Port

C

This information element identifies the valid remote source port. This may be included if remote source port filtering is included. (NOTE 1)

Remote Source Port Range

C

This information element identifies a range of valid remote source ports. This may be included if remote source port filtering is included. (NOTE 1)

Traffic Policing Required

O

This information element indicates that policing of the media flow is required.

Peak Data Rate

O

This information element may be present if Policing is required and specifies the permissible peak data rate for a media stream. (NOTE 2)..

Sustainable Data Rate

O

This information element may be present if Policing is required and specifies the permissible sustainable data rate for a media stream. (NOTE 2).

Delay Variation Tolerance

O

This information element may be present if Policing on Peak Data Rate is required and specifies the maximum expected delay variation tolerance for the corresponding media stream.

Maximum Burst Size

C

This information element shall be present if Policing on Sustainable Data Rate is required and specifies the maximum expected burst size for the corresponding media stream.

DiffServ Code Point

O

This information element indicates a specific DiffServ code point to be used in the IP header in packets sent on the bearer termination.

DiffServ Tagging Behaviour

O

This information element indicates whether the Diffserv code point in the IP header in packets sent on the bearer termination shall be copied from the received value or set to a specific value.

Media Inactivity Detection Required

O

This information element indicates that detection of inactive media flows is required.

Media Inactivity Detection Time

C

This information element may be present if Inactive Media Detection is required and specifies the Inactivity Detection time.

Media Inactivity Detection Direction

C

This information element may be present if Inactive Media Detection is required and specifies the Inactivity Detection direction.

RTCP handling

O

This information element is present if IMS-ALG wants to explicitly control the reservation of RTCP resources (NOTE 4).

RTP/RTCP transport multiplexing

C

This information element requests the IMS-AGW to apply the RTP/RTCP transport multiplexing. This information element may only be present if RTCP handling is required.

Explicit RTCP transport address

C

This information element indicates the remote RTCP port and optionally the remote network address where to send RTCP packets. This information element may only be present if RTCP handling is required.

Local cryptographic SDES attribute

C

This information element is present if IMS-ALG wants that the media is encrypted and/or integrity protected by the IMS-AGW (NOTE 3). It indicates the SDES local cryptographic parameters such as key(s)

Remote cryptographic SDES attribute

C

This information element is present if IMS-ALG wants that the media is decrypted, and/or integrity checked by the IMS-AGW (NOTE 3). It indicates the SDES remote cryptographic parameters such as key(s)

ECN Enable

O

This information element requests the IMS-AGW to apply ECN procedures.

ECN Initiation Method

C

This information element specifies the ECN Initiation method and requests the IMS-AGW to perform IP header settings as an ECN endpoint, or indicates that ECN bits shall be passed transparently. It may be included only if ECN is enabled.

Notify ECN Failure Event

C

This information element requests a notification if a ECN failure occurs due to ECN. It may only be supplied if ECN is enabled and the IMS-AGW acts as ECN endpoint.

Extended RTP Header for CVO

O

This information element requests the IMS-AGW to pass on the CVO extended RTP header as defined by IETF RFC 5285 [23].

Extended RTP Header for Sent ROI

O

This information element requests the IMS-AGW to pass on the ROI extended RTP header for carriage of predefined and/or arbitrary ROI information as defined by IETF RFC 5285 [23] and 3GPP TS 26.114 [21].

Predefined ROI

O

This information element requests the IMS-AGW to support the RTCP feedback message capability for "Predefined ROI" type expressed by the parameter "3gpp-roi-predefined", as described in 3GPP TS 26.114 [21].

Arbitrary ROI

O

This information element requests the IMS-AGW to support the RTCP feedback message capability for "Arbitrary ROI" type expressed by the parameter "3gpp-roi-arbitrary", as described in 3GPP TS 26.114 [21].

Generic Image Attributes

O

This information element indicates image attributes (e.g. image size) as defined by IETF RFC 6236 [24].

Local certificate fingerprint Request

O

This information element is present if the IMS-ALG wants that the media is decrypted, and/or integrity protected by the IMS-AGW (NOTE 3). It requests the IMS-AGW to provide a local certificate fingerprint.

Remote certificate fingerprint

O

This information element is present if the IMS-ALG wants that the media is decrypted, and/or integrity checked by the IMS-AGW (NOTE 3). It indicates the remote certificate fingerprint.

Establish (D)TLS session

O

This information element requests the IMS-AGW to take the (D)TLS client role and to initiate the establishment of the (D)TLS session. (NOTE 3)

Notify (D)TLS session establishment Failure Event

O

This information element requests a notification if a (D)TLS session establishment failure occurs. (NOTE 3)

TCP State-aware Handling Indicator and Setup Direction

C

This information element indicates that TCP state-aware handing is required and indicates the TCP setup direction. It may only be included if the IMS‑AGW supports TCP state-aware handling.

Discard Incoming TCP Connection Establishment Requests Indicator

C

This information element indicates whether incoming TCP connection establishment requests (TCP SYN) shall be discarded. It may only be included if the IMS‑AGW supports TCP state-aware handling and discarding incoming TCP connection establishment requests.

Forward Incoming TCP Connection Establishment Requests Indicator

C

This information element indicates for a given termination to use the incoming TCP connection establishment request (TCP SYN) at that termination as a trigger for sending a TCP connection establishment request at the interconnected termination in the same context. It may only be included if the IMS‑AGW supports TCP state-aware handling and the Forward Incoming TCP Connection Establishment Requests Indicator.

Notify TCP Connection Establishment Failure Event

C

This information element requests a notification if a TCP connection establishment failure occurs. It may only be included if the IMS‑AGW supports TCP state-aware handling.

STUN server request

O

This information element is present if IMS-ALG requests the IMS-AGW to answer STUN connectivity checks for ICE.

ICE Connectivity Check

C

This information element requests the IMS-AGW to perform ICE connectivity check as defined by IETF RFC 8445 [82]. It is only applicable for full ICE.

Notify ICE Connectivity Check Result

C

This information element requests a notification of ICE connectivity check result. It is only applicable for full ICE.

Notify New Peer Reflexive Candidate

C

This information element requests a notification of new peer reflexive candidate was discovered during a connectivity check. It is only applicable for full ICE.

ICE password request

O

This information element is present if IMS-ALG requests an ICE password.

ICE Ufrag request

O

This information element is present if IMS-ALG requests an ICE ufrag.

ICE host candidate request

O

This information element is present if IMS-ALG requests an ICE host candidate.

ICE pacing request

O

This information element is present if IMS-ALG requests a pacing value for connectivity checks (Ta timer value). It is only applicable for full ICE.

ICE received candidate

O

This information element is present if IMS-ALG indicates a received candidate for ICE.

ICE received password

O

This information element is present if IMS-ALG indicates a received password for ICE.

ICE received Ufrag

O

This information element is present if IMS-ALG indicates a received Ufrag for ICE.

ICE received pacing

O

This information element is present if IMS-ALG indicates a received pacing value for connectivity checks (Ta timer value). It is only applicable for full ICE. It is only applicable for full ICE.

MSRP Path

O

This information element is present for application-aware MSRP Interworking. It provides the path information that the IMS-AGW shall insert in the MSRP layer "To‑Path" Information element.

Application-aware MSRP interworking request

O

This information element is present if IMS-ALG requests the IMS-AGW to perform application-aware MSRP Interworking.

Notify STUN consent freshness test failure Event

O

This information element requests a notification if a STUN consent freshness test failure occurs (full ICE only).

STUN consent freshenss test request

O

This information element is present if eP-CSCF requests the eIMS-AGW to perform a STUN consent freshness test (full ICE only).

Local SCTP Port Request

O

This information element is present if the IMS-ALG requests the IMS-AGW to establish an SCTP association. It requests the IMS-AGW to provide a local SCTP Port.

Remote SCTP Port

O

This information element is present if the IMS-ALG requests the IMS-AGW to establish an SCTP association. It indicates the remote SCTP port.

Local SCTP maximum message size Request

O

This information element is present if the IMS-ALG requests the IMS-AGW to establish an SCTP association. It requests the IMS-AGW to provide a local max message size.

Remote SCTP maximum message size

O

This information element is present if the IMS-ALG requests the IMS-AGW to establish an SCTP association. It indicates the remote max message size.

SCTP Group Semantics

O

This information element is present if the IMS-ALG requests the IMS-AGW to establish an SCTP association. It indicates the H.248 component streams that are grouped in the same SCTP association.

SCTP stream deaggregation

O

This information element is present if the IMS-ALG requests the IMS-AGW to establish an SCTP association. It indicates the H.248 component streams that transport media that are to be deaggregated from the H.248 deaggregation stream used to control the SCTP association.

SCTP stream ID

O

This information element is present if the IMS-ALG requests the IMS-AGW to establish an WEBRTC data channel. It indicates the SCTP stream ID to be used for that data channel.

Local Dcmap

O

This information element is present if the IMS-ALG requests the IMS-AGW to establish the WEBRTC data channel. It indicates the information within an SDP "dcmap" attribute sent towards the remote peer, including the Subprotocol to exchange via the data channel.

Remote Dcmap

O

This information element is present if the IMS-ALG requests the IMS-AGW to establish the WEBRTC data channel. It indicates the information within an SDP "dcmap" attribute received from the remote peer, including the Subprotocol to exchange via the data channel.

Local Dcsa

O

This information element can be present if the IMS-ALG requests the IMS-AGW to establish the WEBRTC data channel and to handle its contents in an application-aware manner. It indicates the information within an SDP "dcsa" attribute sent towards the remote peer, encapsulating a subprotocol specific SDP attribute.

Remote Dcsa

O

This information element can be present if the IMS-ALG requests the IMS-AGW to establish the WEBRTC data channel and to handle its contents in an application-aware manner. It indicates the information within an SDP "dcsa" attribute received from the remote peer, encapsulating a subprotocol specific SDP attribute.

Received SCTP Stream Reset Request

O

This information element is present if the eP-CSCF (IMS-ALG) requests the eIMS-AGW to establish the WEBRTC data channel. It requests the eIMS-AGW to provide a notification when receiving an SCTP Stream reset request and to autonomously answer that SCTP Stream reset request

Allowed RTCP APP message types

O

This information element is present if IMS-ALG allows the IMS-AGW to send RTCP APP packets of the indicated types. The IMS-AGW shall not send other RTCP APP packets. If the parameter is not supplied, the IMS-AGW shall not send any RTCP APP packets.

SDPCapNeg configuration

O

This information element provides SDPCapNeg configuration(s) using as "a=acap", "a=tcap", "a=pcfg" and "a=acfg" SDP attributes.

Additional Bandwidth Properties

O

This information element indicates additional bandwidth properties using "a=bw-info" SDP attribute(s) as defined by 3GPP TS 26.114 [21].

CCM BASE

O

This information element indicates that the IMS-AGW shall be prepared to receive and is allowed to send, respectively, the RTCP feedback "CCM FIR" and/or "CCM TMMBR" messages (defined in IETF RFC 5104 [78]).

CCM pause-resume

O

This information element indicates to the IMS-AGW that RTCP feedback "CCM PAUSE-RESUME" messages shall be passed transparently.

DBI

O

This information element indicates to the IMS-AGW that RTCP DBI feedback messages (as defined in 3GPP TS 26.114 [21] clause 7.3.8) shall be passed transparently.

Reserve and Configure AGW Connection Point Ack

IMS-AGW

Context

M

This information element indicates the context where the command was executed.

Bearer Termination

M

This information element indicates the bearer termination where the command was executed.

Local IP Resources

C

This information element indicates the resource(s) for which the IMS-AGW shall be prepared to receive user data. This IE shall be present if it was contained in the request. If the IE was not contained in the request, it may be present in the reply.

For terminations supporting any combination of video, audio and messaging this IE shall contain separate resources per stream.

Remote IP Resources

O

This information element indicates the resource(s) for which the IMS-AGW shall send data.

For terminations supporting any combination of video, audio and messaging this IE shall contain separate resources per stream.

Local Connection Address

M

This information element indicates the IP address and port number(s) the IMS-AGW shall receive user plane data from IMS.

For terminations supporting any combination of video, audio and messaging this may contain multiple addresses.

Remote Connection Address

O

This information element indicates the remote IP address and port number(s) that the IMS-AGW can send user plane data to.

For terminations supporting any combination of video, audio and messaging this may contain multiple addresses.

Local cryptographic SDES attribute

C

This information element may be present only if it was contained in the request. It indicates the SDES local cryptographic parameters such as key(s)

Remote cryptographic SDES attribute

C

This information element may be present only if it was contained in the request. It indicates the SDES remote cryptographic parameters such as key(s)

Local certificate fingerprint

C

This information element may be present only if the Local certificate fingerprint Request was contained in the request. It indicates the local certificate fingerprint. (NOTE 3)

ICE password

C

This information element shall be present only if it was contained in the request. It indicates the ICE password assigned by the IMS-AGW.

ICE Ufrag

C

This information element shall be present only if it was contained in the request. It indicates the ICE Ufrag assigned by the IMS-AGW.

ICE host candidate

C

This information element shall be present only if it was contained in the request. It indicates the ICE host candidate assigned by the IMS-AGW.

ICE pacing

C

This information element shall be present only if it was contained in the request. It indicates a desired pacing value for connectivity checks (Ta timer value).

Local SCTP Port

C

This information element may be present only if the Local SCTP Port Request was contained in the request. It indicates the local SCTP Port.

Local SCTP maximum message size

C

This information element may be present only if the Local max message size Request was contained in the request. It indicates the local max message size.

ICE lite indication

C

This information element shall be present only if an ICE host candidate request was contained in the request, and the IMS-AGW supports ICE lite, but not full ICE. It indicates that the IMS-AGW only supports ICE lite.

SDPCapNeg configuration

C

This information element shall be present only if it was contained in the request. It provides SDPCapNeg configuration(s) using as "a=acap", "a=tcap", "a=pcfg" and "a=acfg" SDP attributes.

NOTE 1: Remote Source Port and Remote Source Port Range are mutually exclusive.

NOTE 2: One of those IEs shall at least be present when policing is required.

NOTE 3: This IE may only be present for access network terminations.

NOTE 4: The concerned RTCP resource component is related to the RTCP port value.

Reserve AGW Connection Point

IMS-ALG

Context /Context Request

M

This information element indicates the existing context or requests a new context for the bearer termination.

Emergency Call Indicator

O

This information element identifies the call as emergency call that requires a preferential handling.

Priority information

O

This information element requests the IMS-AGW to apply priority treatment for the terminations and bearer connections in the specified context.

Bearer Termination Request

M

This information element requests a new bearer termination

Local IP Resources

O

This information element indicates the resource(s) for which the IMS-AGW shall be prepared to receive user data.

For terminations supporting any combination of video, audio and messaging this IE shall contain separate resources per stream.

May be excluded (i.e. "-" is used in SDP m-line) if no transcoding or media related functions are required.

ReserveValue

O

This information element indicates if multiple local resources are to be reserved.

This information element shall be included if a speech codec and auxiliary payload types are configured.

Local Connection Address Request

M

This information element requests an IP address and port number(s) on the IMS-AGW that the remote end can send user plane data to.

For terminations supporting any combination of video, audio and messaging this may contain multiple addresses.

Notify termination heartbeat

M

This information element requests termination heartbeat indications.

Notify Released Bearer

O

This information element requests a notification of a released bearer.

Latching Requirement

O

This information element indicates that the IMS-AGW should (re)latch onto the address of received media packets to determine the corresponding destination address.

IP Realm Identifier

O

This information element indicates the IP realm of the bearer termination.

Remote Source Address Filtering

O

This information element indicates that remote source address filtering is required.

Remote Source Address Mask

C

This information element provides information on the valid remote source addresses. This is required if a range of remote source address filtering is required.

Remote Source Port Filtering

O

This information element indicates that remote source port filtering is required.

Remote Source Port

C

This information element identifies the valid remote source port. This may be included if remote source port filtering is included. (NOTE 1)

Remote Source Port Range

C

This information element identifies a range of valid remote source ports. This may be included if remote source port filtering is included. (NOTE 1)

Policing Required

O

This information element indicates that policing of the media flow is required.

Peak Data Rate

O

This information element may be present if Policing is required and specifies the permissible peak data rate for a media stream. (NOTE 2).

Sustainable Data Rate

O

This information element may be present if Policing is required and specifies the permissible sustainable data rate for a media stream. (NOTE 2).

Delay Variation Tolerance

O

This information element may be present if Policing on Peak Data Rate is required and specifies the maximum expected delay variation tolerance for the corresponding media stream.

Maximum Burst Size

C

This information element shall be present if Policing on Sustainable Data Rate is required and specifies the maximum expected burst size for the corresponding media stream.

DiffServ Code Point

O

This information element indicates a specific DiffServ code point to be used in the IP header in packets sent on the bearer termination.

DiffServ Tagging Behaviour

O

This information element indicates whether the Diffserv code point in the IP header in packets sent on the bearer termination should be copied from the received value or set to a specific value.

Media Inactivity Detection Required

O

This information element indicates that detection of inactive media flows is required.

Media Inactivity Detection Time

C

This information element may be present if Inactive Media Detection is required and specifies the Inactivity Detection time.

Media Inactivity Detection Direction

C

This information element may be present if Inactive Media Detection is required and specifies the Inactivity Detection direction.

RTCP handling

O

This information element is present if IMS-ALG wants explicitly control the reservation of RTCP resources by the IMS-AGW.

RTP/RTCP transport multiplexing

C

This information element requests the IMS-AGW to apply the RTP/RTCP transport multiplexing. This information element may only be present if RTCP handling is required.

Local cryptographic SDES attribute

C

This information element is present if IMS-ALG wants that the media is encrypted and/or integrity protected by the IMS-AGW (NOTE 3). It indicates the SDES local cryptographic parameters such as key(s).

ECN Enable

O

This information element requests the IMS-AGW to apply ECN procedures.

ECN Initiation Method

C

This information element specifies the ECN Initiation method and requests the IMS-AGW to perform IP header settings as an ECN endpoint, or indicates that ECN bits shall be passed transparently. It may be included only if ECN is enabled.

Notify ECN Failure Event

C

This information element requests a notification if a ECN failure occurs due to ECN. It may only be supplied if ECN is enabled and the IMS-AGW acts as ECN endpoint.

Extended RTP Header for CVO

O

This information element requests the IMS-AGW to pass on the CVO extended RTP header as defined by IETF RFC 5285 [23].

Extended RTP Header for Sent ROI

O

This information element requests the IMS-AGW to pass on the ROI extended RTP header for carriage of predefined and/or arbitrary ROI information as defined by IETF RFC 5285 [23] and 3GPP TS 26.114 [21].

Predefined ROI

O

This information element requests the IMS-AGW to support the RTCP feedback message capability for "Predefined ROI" type expressed by the parameter "3gpp-roi-predefined", as described in 3GPP TS 26.114 [21].

Arbitrary ROI

O

This information element requests the IMS-AGW to support the RTCP feedback message capability for "Arbitrary ROI" type expressed by the parameter "3gpp-roi-arbitrary", as described in 3GPP TS 26.114 [21].

Generic Image Attributes

O

This information element indicates image attributes (e.g. image size) as defined by IETF RFC 6236 [24].

Local certificate fingerprint Request

O

This information element is present if the IMS-ALG wants that the media is decrypted, and/or integrity protected by the IMS-AGW (NOTE 4). It requests the IMS-AGW to provide a local certificate fingerprint.

Establish (D)TLS session

O

This information element requests the IMS-AGW to take the (D)TLS client role and to initiate the establishment of the (D)TLS session. (NOTE 4)

Notify (D)TLS session establishment Failure Event

O

This information element requests a notification if a (D)TLS session establishment failure occurs. (NOTE 4)

TCP State-aware Handling Indicator and Setup Direction

C

This information element indicates that TCP state-aware handing is required and indicates the TCP setup direction. It may only be included if the IMS‑AGW supports TCP state-aware handling.

Discard Incoming TCP Connection Establishment Requests Indicator

C

This information element indicates whether incoming TCP connection establishment requests (TCP SYN) shall be discarded. It may only be included if the IMS‑AGW supports TCP state-aware handling and discarding incoming TCP connection establishment requests.

Forward Incoming TCP Connection Establishment Requests Indicator

C

This information element indicates for a given termination to use the incoming TCP connection establishment request (TCP SYN) at that termination as a trigger for sending a TCP connection establishment request at the interconnected termination in the same context. It may only be included if the IMS‑AGW supports TCP state-aware handling and the Forward Incoming TCP Connection Establishment Requests Indicator.

Notify TCP Connection Establishment Failure Event

C

This information element requests a notification if a TCP connection establishment failure occurs. It may only be included if the IMS‑AGW supports TCP state-aware handling.

ICE password request

O

This information element is present if IMS-ALG requests an ICE password.

ICE Ufrag request

O

This information element is present if IMS-ALG requests an ICE ufrag.

ICE host candidate request

O

This information element is present if IMS-ALG requests an ICE host candidate.

ICE pacing request

O

This information element is present if IMS-ALG requests a pacing value for connectivity checks (Ta timer value). It is only applicable for full ICE.

STUN server request

O

This information element is present if IMS-ALG requests the IMS-AGW to answer STUN connectivity checks for ICE.

Application-aware MSRP interworking request

O

This information element is present if IMS-ALG requests the IMS-AGW to perform application-aware MSRP Interworking.

Notify STUN consent freshness test failure Event

O

This information element requests a notification if a STUN consent freshness test failure occurs (full ICE only).

STUN consent freshenss test request

O

This information element is present if eP-CSCF requests the eIMS-AGW to perform a STUN consent freshness test (full ICE only).

Local SCTP Port Request

O

This information element is present if the IMS-ALG requests the IMS-AGW to establish an SCTP association. It requests the IMS-AGW to provide a local SCTP Port.

Local SCTP maximum message size Request

O

This information element is present if the IMS-ALG requests the IMS-AGW to establish an SCTP association. It requests the IMS-AGW to provide a local max message size.

Local Dcmap

O

This information element is present if the IMS-ALG requests the IMS-AGW to establish the WEBRTC data channel. It indicates the information within an SDP "dcmap" attribute sent towards the remote peer, including the Subprotocol to exchange via the data channel.

Local Dcsa

O

This information element can be present if the IMS-ALG requests the IMS-AGW to establish the WEBRTC data channel and to handle its contents in an application-aware manner. It indicates the information within an SDP "dcsa" attribute sent towards the remote peer, encapsulating a subprotocol specific SDP attribute.

SCTP Group Semantics

O

This information element is present if the IMS-ALG requests the IMS-AGW to establish an SCTP association. It indicates the H.248 component streams that are grouped in the same SCTP association.

SCTP stream deaggregation

O

This information element is present if the IMS-ALG requests the IMS-AGW to establish an SCTP association. It indicates the H.248 component streams that transport media that are to be deaggregated from the H.248 deaggregation stream used to control the SCTP association.

SCTP stream ID

O

This information element is present if the IMS-ALG requests the IMS-AGW to establish an WEBRTC data channel. It indicates the SCTP stream ID to be used for that data channel.

Received SCTP Stream Reset Request

O

This information element is present if the eP-CSCF (IMS-ALG) requests the eIMS-AGW to establish the WEBRTC data channel. It requests the eIMS-AGW to provide a notification when receiving an SCTP Stream reset request and to autonomously answer that SCTP Stream reset request

SDPCapNeg configuration

O

This information element provides SDPCapNeg configuration(s) using as "a=acap", "a=tcap", "a=pcfg" and "a=acfg" SDP attributes.

Reserve AGW Connection Point Ack

IMS-AGW

Context

M

This information element indicates the context where the command was executed.

Bearer Termination

M

This information element indicates the bearer termination where the command was executed.

Local IP Resources

C

This information element indicates the resource(s) for which the IMS-AGW shall be prepared to receive user data. This IE shall be present if it was contained in the request. If the IE was not contained in the request, it may be present in the reply.

For terminations supporting any combination of video, audio and messaging this IE shall contain separate resources per stream.

Local Connection Address

M

This information element indicates the IP address and port number(s) the IMS-AGW shall receive user plane data from IMS.

For terminations supporting any combination of video, audio and messaging this may contain multiple addresses.

Local cryptographic SDES attribute

C

This information element may be present only if it was contained in the request. It indicates the SDES local cryptographic parameters such as key(s)

Local certificate fingerprint

C

This information element may be present only if the Local certificate fingerprint Request was contained in the request. It indicates the local certificate fingerprint. (NOTE 4)

ICE password

C

This information element shall be present only if it was contained in the request. It indicates the ICE password assigned by the IMS-AGW.

ICE Ufrag

C

This information element shall be present only if it was contained in the request. It indicates the ICE Ufrag assigned by the IMS-AGW.

ICE host candidate

C

This information element shall be present only if it was contained in the request. It indicates the ICE host candidate assigned by the IMS-AGW.

ICE pacing

C

This information element shall be present only if it was contained in the request. It indicates a desired pacing value for connectivity checks (Ta timer value).

ICE lite indication

C

This information element shall be present only if an ICE host candidate request was contained in the request, and the IMS-AGW supports ICE lite, but not full ICE. It indicates that the IMS-AGW only supports ICE lite.

Local SCTP Port

C

This information element may be present only if the Local SCTP Port Request was contained in the request. It indicates the local SCTP Port.

Local SCTP maximum message size

C

This information element may be present only if the Local max message size Request was contained in the request. It indicates the local max message size.

SDPCapNeg configuration

C

This information element shall be present only if it was contained in the request. It provides SDPCapNeg configuration(s) using as "a=acap", "a=tcap", "a=pcfg" and "a=acfg" SDP attributes.

NOTE 1: Remote Source Port and Remote Source Port Range are mutually exclusive.

NOTE 2: One of those IEs shall at least be present when policing is required.

NOTE 3: This IE may only be present for access network terminations, and only if the IMS-ALG includes only one SDES crypto attribute in the SDP sent towards the served UE.

NOTE 4: This IE may only be present for access network terminations.

Configure AGW Connection Point

IMS-ALG

Context

M

This information element indicates the context for the bearer termination.

Priority information

O

This information element shall be present if the priority information needs to be modified, it may be present otherwise.

Bearer Termination

M

This information element indicates the existing bearer termination.

Local IP Resources

O

This information element indicates the resource(s) for which the IMS-AGW shall be prepared to receive user data.

For terminations supporting any combination of video, audio and messaging this IE shall contain separate resources per stream.

May be excluded (i.e. "-" is used in SDP m-line) if no transcoding or media related functions are required.

Remote IP Resources

O

This information element indicates the resource(s) for which the IMS-AGW shall send data.

For terminations supporting any combination of video, audio and messaging this IE shall contain separate resources per stream.

May be excluded (i.e. "-" is used in SDP m-line) if no transcoding or media related functions are required.

Local Connection Address

O

This information element indicates the IP address and port number(s) on the IMS-AGW that the IMS user can send user plane data to.

For terminations supporting video any combination of video, audio and messaging may contain multiple addresses.

Remote Connection Address

O

This information element indicates the remote IP address and port number(s) that the IMS-AGW can send user plane data to.

For terminations supporting any combination of video, audio and messaging this may contain multiple addresses.

Latching Requirement

O

This information element indicates that the IMS-AGW should (re)latch onto the address of received media packets to determine the corresponding destination address.

IP Realm Identifier

O

This information element indicates the IP realm of the bearer termination. (NOTE 3)

Remote Source Address Filtering

O

This information element indicates that remote source address filtering is required.

Remote Source Address Mask

C

This information element provides information on the valid remote source addresses. This is required if a range of remote source address filtering is required.

Remote Source Port Filtering

O

This information element indicates that remote source port filtering is required.

Remote Source Port

C

This information element identifies the valid remote source port. This may be included if remote source port filtering is included. (NOTE 1)

Remote Source Port Range

C

This information element identifies a range of valid remote source ports. This may be included if remote source port filtering is included. (NOTE 1)

Policing Required

O

This information element indicates that policing of the media flow is required.

Peak Data Rate

O

This information element may be present if Policing is required and specifies the permissible peak data rate for a media stream. (NOTE 2).

Sustainable Data Rate

O

This information element may be present if Policing is required and specifies the permissible sustainable data rate for a media stream. (NOTE 2).

Delay Variation Tolerance

O

This information element may be present if Policing on Peak Data Rate is required and specifies the maximum expected delay variation tolerance for the corresponding media stream.

Maximum Burst Size

C

This information element shall be present if Policing on Sustainable Data Rate is required and specifies the maximum expected burst size for the corresponding media stream.

DiffServ Code Point

O

This information element indicates a specific DiffServ code point to be used in the IP header in packets sent on the bearer termination.

DiffServ Tagging Behaviour

O

This information element indicates whether the Diffserv code point in the IP header in packets sent on the bearer termination should be copied from the received value or set to a specific value.

Media Inactivity Detection Required

O

This information element indicates that detection of inactive media flows is required.

Media Inactivity Detection Time

C

This information element may be present if Inactive Media Detection is required and specifies the Inactivity Detection time.

Media Inactivity Detection Direction

C

This information element may be present if Inactive Media Detection is required and specifies the Inactivity Detection direction.

RTCP handling

O

This information element is present if IMS-ALG wants to explicitly control the reservation of RTCP resources (NOTE 5).

RTP/RTCP transport multiplexing

C

This information element requests the IMS-AGW to apply the RTP/RTCP transport multiplexing. This information element may only be present if RTCP handling is required.

Explicit RTCP transport address

C

This information element indicates the remote RTCP port and optionally the remote network address where to send RTCP packets. This information element may only be present if RTCP handling is required.

Local cryptographic SDES attribute

C

This information element is present if IMS-ALG wants that the media is encrypted and/or integrity protected by the IMS-AGW (NOTE 4). It indicates the SDES local cryptographic parameters such as key(s).

Remote cryptographic SDES attribute

C

This information element is present if IMS-ALG wants that the media is decrypted, and/or integrity checked by the IMS-AGW (NOTE 4). It indicates the SDES remote cryptographic parameters such as key(s).

ECN Enable

O

This information element requests the IMS-AGW to apply ECN procedures.

ECN Initiation Method

C

This information element specifies the ECN Initiation method and requests the IMS-AGW to perform IP header settings as an ECN endpoint, or indicates that ECN bits shall be passed transparently. It may be included only if ECN is enabled.

Notify ECN Failure Event

C

This information element requests a notification if a ECN failure occurs due to ECN. It may only be supplied if ECN is enabled and the IMS-AGW acts as ECN endpoint.

Extended RTP Header for CVO

O

This information element requests the IMS-AGW to pass on the CVO extended RTP header as defined by IETF RFC 5285 [23].

Extended RTP Header for Sent ROI

O

This information element requests the IMS-AGW to pass on the ROI extended RTP header for carriage of predefined and/or arbitrary ROI information as defined by IETF RFC 5285 [23] and 3GPP TS 26.114 [21].

Predefined ROI

O

This information element requests the IMS-AGW to support the RTCP feedback message capability for "Predefined ROI" type expressed by the parameter "3gpp-roi-predefined", as described in 3GPP TS 26.114 [21].

Arbitrary ROI

O

This information element requests the IMS-AGW to support the RTCP feedback message capability for "Arbitrary ROI" type expressed by the parameter "3gpp-roi-arbitrary", as described in 3GPP TS 26.114 [21].

Generic Image Attributes

O

This information element indicates image attributes (e.g. image size) as defined by IETF RFC 6236 [24].

Remote certificate fingerprint

O

This information element is present if the IMS-ALG wants that the media is decrypted, and/or integrity checked by the IMS-AGW (NOTE 4). It indicates the remote certificate fingerprint.

Establish (D)TLS session

O

This information element requests the IMS-AGW to take the (D)TLS client role and to initiate the establishment of the (D)TLS session. (NOTE 4)

Release (D)TLS session

O

This information element requests the IMS-AGW to release the (D)TLS session. (NOTE 4)

Notify (D)TLS session establishment Failure Event

O

This information element requests a notification if a TLS session establishment failure occurs. (NOTE 4)

TCP State-aware Handling Indicator and Setup Direction

C

This information element indicates that TCP state-aware handing is required and indicates the TCP setup direction. It may only be included if the IMS‑AGW supports TCP state-aware handling.

Discard Incoming TCP Connection Establishment Requests Indicator

C

This information element indicates whether incoming TCP connection establishment requests (TCP SYN) shall be discarded. It may only be included if the IMS‑AGW supports TCP state-aware handling and discarding incoming TCP connection establishment requests.

Forward Incoming TCP Connection Establishment Requests Indicator

C

This information element indicates for a given termination to use the incoming TCP connection establishment request (TCP SYN) at that termination as a trigger for sending a TCP connection establishment request at the interconnected termination in the same context. It may only be included if the IMS‑AGW supports TCP state-aware handling and the Forward Incoming TCP Connection Establishment Requests Indicator.

Send TCP Connection Establishment Requests Indicator

C

This information element indicates for a given termination to send a TCP connection establishment request (TCP SYN). It may only be included if the IMS‑AGW supports TCP state-aware handling.

Notify TCP Connection Establishment Failure Event

C

This information element requests a notification if a TCP connection establishment failure occurs. It may only be included if the IMS‑AGW supports TCP state-aware handling.

ICE Connectivity Check

C

This information element requests the IMS-AGW to perform ICE connectivity check as defined by IETF RFC 8445 [82]. It is only applicable for full ICE.

Notify ICE Connectivity Check Result

C

This information element requests a notification of ICE connectivity check result. It is only applicable for full ICE.

Notify New Peer Reflexive Candidate

C

This information element requests a notification of new peer reflexive candidate was discovered during a connectivity check. It is only applicable for full ICE.

Additional ICE Connectivity Check

C

This information element requests the IMS-AGW to perform additional ICE connectivity check as defined by IETF RFC 8445 [82]. It is only applicable for full ICE.

ICE received candidate

O

This information element is present if IMS-ALG indicates a received candidate for ICE.

ICE received password

O

This information element is present if IMS-ALG indicates a received password for ICE.

ICE received Ufrag

O

This information element is present if IMS-ALG indicates a received Ufrag for ICE.

ICE received pacing

O

This information element is present if IMS-ALG indicates a received pacing value for connectivity checks (Ta timer value). It is only applicable for full ICE.

MSRP Path

O

This information element is present for application-aware MSRP Interworking. It provides the path information that the IMS-AGW shall insert in the MSRP layer "To‑Path" Information element.

Notify STUN consent freshness test failure Event

O

This information element requests a notification if a STUN consent freshness test failure occurs (full ICE only).

STUN consent freshness test request

O

This information element is present if eP-CSCF requests the eIMS-AGW to perform a STUN consent freshness test (full ICE only).

Allowed RTCP APP message types

O

This information element is present if IMS-ALG allows the IMS-AGW to send RTCP APP packets of the indicated types. The IMS-AGW shall not send other RTCP APP packets. If the parameter is not supplied, the IMS-AGW shall not send any RTCP APP packets.

Local Dcmap

O

This information element is present if the IMS-ALG requests the IMS-AGW to establish the WEBRTC data channel. It indicates the information within an SDP "dcmap" attribute sent towards the remote peer, including the Subprotocol to exchange via the data channel.

Remote Dcmap

O

This information element is present if the IMS-ALG requests the IMS-AGW to establish the WEBRTC data channel. It indicates the information within an SDP "dcmap" attribute received from the remote peer, including the Subprotocol to exchange via the data channel.

Local Dcsa

O

This information element can be present if the IMS-ALG requests the IMS-AGW to establish the WEBRTC data channel and to handle its contents in an application-aware manner. It indicates the information within an SDP "dcsa" attribute sent towards the remote peer, encapsulating a subprotocol specific SDP attribute.

Remote Dcsa

O

This information element can be present if the IMS-ALG requests the IMS-AGW to establish the WEBRTC data channel and to handle its contents in an application-aware manner. It indicates the information within an SDP "dcsa" attribute received from the remote peer, encapsulating a subprotocol specific SDP attribute.

Remote SCTP port

O

This information element is present if the IMS-ALG requests the IMS-AGW to establish an SCTP association. It indicates the remote SCTP port.

Remote SCTP max message size

O

This information element is present if the IMS-ALG requests the IMS-AGW to establish an SCTP association. It indicates the remote max message size.

SCTP Group Semantics

O

This information element is present if the IMS-ALG requests the IMS-AGW to modify an SCTP association. It indicates the H.248 component streams that are grouped in the same SCTP association.

SCTP stream deaggregation

O

This information element is present if the IMS-ALG requests the IMS-AGW to modify an SCTP association. It indicates the H.248 component streams that transport media that are to be deaggregated from the H.248 deaggregation stream used to control the SCTP association.

SCTP stream ID

O

This information element is present if the IMS-ALG requests the IMS-AGW to establish an WEBRTC data channel. It indicates the SCTP stream ID to be used for that data channel.

Received SCTP Stream Reset Request

O

This information element is present if the eP-CSCF (IMS-ALG) requests the eIMS-AGW to establish the WEBRTC data channel. It requests the eIMS-AGW to provide a notification when receiving an SCTP Stream reset request and to autonomously answer that SCTP Stream reset request.

Send SCTP Stream Reset Requests Indicator

O

This information element is present if the eP-CSCF (IMS-ALG) requests the eIMS-AGW to reset an SCTP Stream to release the WEBRTC data channel. It requests the eIMS-AGW to send an SCTP Stream reset request.

Received SCTP Stream Reset Response

O

This information element may be present if the eP-CSCF (IMS-ALG) requests the eIMS-AGW to reset an SCTP Stream to release the WEBRTC data channel. It requests the eIMS-AGW to provide a notification when receiving a response to an SCTP Stream reset request.

Initiate Outgoing SCTP Stream Reset

O

This information element is present if the IMS-ALG requests the IMS-AGW to close an individual WEBRTC data channel.

Outgoing SCTP Stream Response

O

This information element is present if the IMS-ALG requests the IMS-AGW to acknowledge the request to close an individual WEBRTC data channel.

Notify Detect Outgoing SCTP Stream Reset

O

This information element requests a notification of outgoing SCTP Stream reset requests from remote peers (here IMS WebRTC client).

Notify Outgoing SCTP Stream Reset Result

O

This information element requests a notification of the result of an outgoing SCTP Stream reset sent to the remote peer (here IMS WebRTC client).

SDPCapNeg configuration

O

This information element provides SDPCapNeg configuration(s) using as "a=acap", "a=tcap", "a=pcfg" and "a=acfg" SDP attributes.

Additional Bandwidth Properties

O

This information element indicates additional bandwidth properties using "a=bw-info" SDP attribute(s) as defined by 3GPP TS 26.114 [21].

CCM BASE

O

This information element indicates that the IMS-AGW shall be prepared to receive and is allowed to send, respectively, the RTCP feedback "CCM FIR" and/or "CCM TMMBR" messages (defined in IETF RFC 5104 [78]).

CCM pause-resume

O

This information element indicates to the IMS-AGW that RTCP feedback "CCM PAUSE-RESUME" messages shall be passed transparently.

DBI

O

This information element indicates to the IMS-AGW that RTCP DBI feedback messages (as defined in 3GPP TS 26.114 [21] clause 7.3.8) shall be passed transparently.

Configure AGW Connection Point Ack

IMS-AGW

Context

M

This information element indicates the context where the command was executed.

Bearer Termination

M

This information element indicates the bearer termination where the command was executed.

Local IP Resources

O

This information element indicates the resource(s) for which the IMS-AGW shall be prepared to receive user data

For terminations supporting any combination of video, audio and messaging this IE shall contain separate resources per stream.

Remote IP Resources

O

This information element indicates the resource(s) for which the IMS-AGW shall send data.

For terminations supporting any combination of video, audio and messaging this IE shall contain separate resources per stream.

Local Connection Address

O

This information element indicates the IP address and port number(s) on the IMS-AGW that the IMS user can send user plane data to.

For terminations supporting any combination of video, audio and messaging this may contain multiple addresses.

Remote Connection Address

O

This information element indicates the remote IP address and port number(s) that the IMS-AGW can send user plane data to.

For terminations supporting any combination of video, audio and messaging this may contain multiple addresses.

Local cryptographic SDES attribute

C

This information element may be present only if it was contained in the request. It indicates the SDES local cryptographic parameters such as key(s)

Remote cryptographic SDES attribute

C

This information element may be present only if it was contained in the request. It indicates the SDES remote cryptographic parameters such as key(s)

NOTE 1: Remote Source Port and Remote Source Port Range are mutually exclusive.

NOTE 2: One of those IEs shall at least be present when policing is required.

NOTE 3: Additional streams may be added by the Configure AGW Connection Point procedure. The additional streams shall then carry the same IP Realm Identifier as the very first Stream.

NOTE 4: This IE may only be present for access network terminations.

NOTE 5: The concerned RTCP resource component is related to the RTCP port value.

Release AGW Termination

IMS-ALG

Context

M

This information element indicates the existing context for the bearer termination.

Bearer Termination

M

This information element indicates the bearer termination to be released.

Release AGW Termination Ack

IMS-AGW

Context

M

This information element indicates the context where the command was executed.

Bearer Termination

M

This information element indicates the bearer termination where the command was executed.

Termination heartbeat indication

IMS-AGW

Context

M

This information element indicates the context for the bearer termination.

Bearer Termination

M

This information element indicates the bearer termination for which the termination heartbeat is reported.

Termination heartbeat

M

Hanging Termination event, as defined in 3GPP TS 29.334 [3].

Termination heartbeat indication Ack

IMS-ALG

Context

M

This information element indicates the context where the command was executed.

Bearer Termination

M

This information element indicates the bearer termination where the command was executed.

IMS-AGW Out-of-Service

IMS-AGW

Context

M

This information element indicates the context for the command.

Root Termination

M

This information element indicates the root termination for the command.

Reason

M

This information element indicates the reason for service change.

Method

M

This information element indicates the method for service change.

IMS-AGW Out-of-Service Ack

IMS-ALG

Context

M

This information element indicates the context where the command was executed.

Root Termination

M

This information element indicates the root termination where the command was executed.

IMS-AGW Communication

Up

IMS-AGW

Context

M

This information element indicates the context for the command.

Root Termination

M

This information element indicates the root termination for the command.

Reason

M

This information element indicates the reason for service change.

Method

M

This information element indicates the method for service change.

IMS-AGW Communication

Up Ack

IMS-ALG

Context

M

This information element indicates the context where the command was executed.

Root Termination

M

This information element indicates the root termination where the command was executed.

IMS-ALG Address

O

This information element indicates the IMS-ALG signalling address to which the IMS-AGW should preferably attempt to re-register.

IMS-AGW Restoration

IMS-AGW

Context

M

This information element indicates the context for the command.

Root Termination

M

This information element indicates the root termination for the command.

Reason

M

This information element indicates the reason for the service change.

Method

M

This information element indicates the method for service change.

IMS-AGW Restoration Ack

IMS-ALG

Context

M

This information element indicates the context where the command was executed.

Root Termination

M

This information element indicates the root termination where the command was executed.

IMS-ALG Address

O

This information element indicates the IMS-ALG signalling address to which the IMS-AGW should preferably attempt to re-register.

IMS-AGW Register

IMS-AGW

Context

M

This information element indicates the context for the command.

Root Termination

M

This information element indicates the root termination for the command.

Reason

M

This information element indicates the reason for the service change.

Method

M

This information element indicates the method for service change.

Protocol Version

M

This information element indicates the protocol version for Iq interface requested by the IMS-AGW.

Service Change Profile

M

This information element indicates the profile for the Iq interface requested by the IMS-AGW.

IMS-AGW Register Ack

IMS-ALG

Context

M

This information element indicates the context where the command was executed.

Root Termination

M

This information element indicates the root termination where the command was executed.

Protocol Version

O

This information element indicates the protocol version for Iq interface supported by the IMS-ALG.

Service Change Profile

O

This information element indicates the profile for the Iq interface supported by the IMS-ALG.

IMS-ALG Address

O

This information element indicates the IMS-ALG signalling address to which the IMS-AGW should preferably attempt to re-register.

IMS-ALG Restoration

IMS-ALG

Context

M

This information element indicates the context for the command.

Root Termination

M

This information element indicates the root termination for the command.

Reason

M

This information element indicates the reason for the service change.

Method

M

This information element indicates the method for service change.

IMS-ALG Restoration Ack

IMS-AGW

Context

M

This information element indicates the context where the command was executed.

Root Termination

M

This information element indicates the root termination where the command was executed.

IMS-AGW Re-register

IMS-AGW

Context

M

This information element indicates the context for the command.

Root Termination

M

This information element indicates the root termination for the command.

Reason

M

This information element indicates the reason for the service change.

Method

M

This information element indicates the method for service change.

Protocol Version

M

This information element indicates the protocol version for Iq interface requested by the IMS-AGW.

Service Change Profile

M

This information element indicates the profile for the Iq interface requested by the IMS-AGW.

IMS-AGW Re-register Ack

IMS-ALG

Context

M

This information element indicates the context where the command was executed.

Root Termination

M

This information element indicates the root termination where the command was executed.

Protocol Version

O

This information element indicates the protocol version for Iq interface supported by the IMS-ALG.

Service Change Profile

O

This information element indicates the profile for the Iq interface supported by the IMS-ALG.

IMS-ALG Address

O

This information element indicates the IMS-ALG signalling address to which the IMS-AGW should preferably attempt to re-register.

IMS-ALG Ordered Re-

register

IMS-ALG

Context

M

This information element indicates the context for the command.

Root Termination

M

This information element indicates the root termination for the command.

Reason

M

This information element indicates the reason for the service change.

IMS-ALG Address

O

This information element indicates the IMS-ALG signalling address.

IMS-ALG Ordered Re-

register Ack

IMS-AGW

Context

M

This information element indicates the context where the command was executed.

Root Termination

M

This information element indicates the root termination where the command was executed.

Audit Value

IMS-ALG

Context

M

This information element indicates the context for the command.

Bearer Termination

M

This information element indicates the bearer termination(s) for the command.

Object(s)

M

This information element indicates the object(s) to be audited.

Audit Value Ack

IMS-AGW

Context

M

This information element indicates the context where the command was executed.

Bearer Termination

M

This information element indicates the bearer termination where the command was executed.

Value(s)

M

This information element indicates the value(s) of the object(s).

Audit Capability

IMS-ALG

Context

M

This information element indicates the context for the command.

Bearer Termination

M

This information element indicates the bearer termination(s) for the command.

Object(s)

M

This information element indicates the object(s) which capability is requested.

Audit Capability Ack

IMS-AGW

Context

M

This information element indicates the context where the command was executed.

Bearer Termination

M

This information element indicates the bearer termination where the command was executed.

Capabilities(s)

M

This information element indicates the capabilities of the object(s).

Capability Update

IMS-AGW

Context

M

This information element indicates the context for the command.

Bearer Termination

M

This information element indicates the bearer termination(s) for the command.

Reason

M

This information element indicates the reason for service change.

Method

M

This information element indicates the method for service change.

Capability Update Ack

IMS-ALG

Context

M

This information element indicates the context where the command was executed.

Bearer Termination

M

This information element indicates the bearer termination where the command was executed.

IMS-ALG Out of Service

IMS-ALG

Context

M

This information element indicates the context for the command.

Root Termination

M

This information element indicates the root termination for the command.

Reason

M

This information element indicates the reason for the service change.

Method

M

This information element indicates the method for service change.

IMS-ALG Out of Service

Ack

IMS-AGW

Context

M

This information element indicates the context where the command was executed.

Root Termination

M

This information element indicates the root termination where the command was executed.

IMS-AGW Resource Congestion Handling –

Activate

IMS-ALG

Context

M

This information element indicates that all context are applicable for the root termination.

Root Termination

M

This information element indicates that root termination is where the congestion mechanism is activated.

Congestion Activate

M

This information element requests to activate the congestion mechanism.

IMS-AGW Resource Congestion Handling –

Activate Ack

IMS-AGW

Context

M

This information element indicates that all context are where the command was executed.

Root Termination

M

This information element indicates that root termination is where the command was executed.

IMS-AGW Resource Congestion Handling –

Indication

IMS-AGW

Context

M

This information element indicates all context are applicable for the root termination.

Root Termination

M

This information element indicates that root termination is where the congestion mechanism was activated.

Reduction

M

This information element indicates the load percentage to be reduced.

IMS-AGW Resource Congestion Handling –

Indication Ack

IMS-ALG

Context

M

This information element indicates all context are where the command was executed.

Root Termination

M

This information element indicates that root termination is where the command was executed.

Inactivity Timeout Activate

IMS-ALG

Context

M

This information element indicates all context are applicable for the root termination.

Root Termination

M

This information element indicates that root termination is where inactivity timeout mechanism was activated.

Inactivity Timeout Activate

M

This information element activates the Inactivity Timeout request.

Inactivity Timeout

O

This information element indicates the maximum length of time before triggering the related notification.

Inactivity Timeout Activate Ack

IMS-AGW

Context

M

This information element indicates all context are where the command was executed.

Root Termination

M

This information element indicates that root termination is where the command was executed.

Inactivity Timeout Notification

IMS-AGW

Context

M

This information element indicates all context are applicable for the root termination.

Root Termination

M

This information element indicates that root termination is where the inactivity timeout mechanism was activated.

Inactivity Timeout Notification

M

This information element notifies the IMS-ALG of an inactivity time period.

Inactivity Timeout Notifcation Ack

IMS-ALG

Context

M

This information element indicates all context are where the command was executed.

Root Termination

M

This information element indicates that root termination is where the command was executed.

Command Reject

Both

Context

O

This information element indicates the context where the command was rejected.

Bearer Termination

O

This information element indicates the bearer termination where the command was rejected.

Error

M

This information element indicates the error that caused command rejection.

Realm Availability Activate

IMS-ALG

Context

M

This information element indicates all context are applicable for the root termination.

Root Termination

M

This information element indicates that root termination is where the realm availability monitoring was activated.

Realm Availability Activate

M

This information element activates the monitoring of the availability of IP Realms on the IMS-AGW.

Realm Availability Activate Ack

IMS-AGW

Context

M

This information element indicates all context are where the command was executed.

Root Termination

M

This information element indicates that root termination is where the command was executed.

Realm Availability Notification

IMS-AGW

Context

M

This information element indicates all context are applicable for the root termination.

Root Termination

M

This information element indicates that root termination is where the realm availability monitoring was activated.

Realm Availability Changes

M

This information element notifies the IMS-ALG of newly available/unavailable IP Realms.

Realm Availability Notifcation Ack

IMS-ALG

Context

M

This information element indicates all context are where the command was executed.

Root Termination

M

This information element indicates that root termination is where the command was executed.

IP Bearer Released

IMS-AGW

Context

M

This information element indicates the context for the bearer termination.

Bearer Termination

M

This information element indicates the bearer termination where the bearer was released.

Bearer Released

M

This information element notifies a bearer release.

Release Cause

M

This information element indicates the cause of a bearer release.

IP Bearer Released Ack

IMS-ALG

Context

M

This information element indicates all context are where the command was executed.

Bearer Termination

M

This information element indicates that Bearer termination is where the command was executed.

Media Inactivity Notification

IMS-AGW

Context

M

This information element indicates the existing context for the bearer termination.

Bearer Termination

M

This information element indicates that bearer termination is where the media inactivity detection was activated.

Media Inactivity

M

This information element notifies the IMS-ALG of Media inactivity detection on the bearer termination.

Media Inactivity Notification Ack

IMS-ALG

Context

M

This information element indicates the context where the command was executed.

Bearer Termination

M

This information element indicates the bearer termination where the command was executed.

Termination Out-of-Service

IMS-AGW

Context

M

This information element indicates the context for the command.

Bearer Termination

M

This information element indicates the bearer termination(s) for the command.

Reason

M

This information element indicates the reason for service change.

Method

M

This information element indicates the method for service change.

Termination Out-of-Service Ack

IMS-ALG

Context

M

This information element indicates the context where the command was executed.

Bearer Termination

M

This information element indicates the bearer termination(s) where the command was executed.

Change Through-Connection

IMS-ALG

Context/Context Request

M

This information element indicates the existing context or requests a new context for the bearer termination.

Bearer Termination/Bearer Termination Request

M

This information element indicates the existing bearer termination or requests a new bearer termination where the through-connection is changed.

Through-Connection

M

This information element indicates the through-connection of the bearer termination

Change Through-Connection Ack

IMS-AGW

Context

M

This information element indicates the context where the command was executed.

Bearer Termination

M

This information element indicates the bearer termination where the command was executed.

Change Flow Direction

IMS-ALG

Context/Context Request

M

This information element indicates the existing context or a new context where the flow direction is changed.

Bearer Termination 1/ Bearer Termination 1 Request

M

This information element indicates the existing bearer termination or a new bearer termination from where the new flow direction is applied.

Bearer Termination 2/ Bearer Termination 2 Request

M

This information element indicates the existing bearer termination or a new bearer termination where to the new flow direction is applied.

Flow Direction

M

This information element indicates the flow direction from the bearer termination 1 to bearer termination 2 within the context.

Change Flow Direction Ack

IMS-AGW

Context

M

This information element indicates the context where the command was executed.

ECN Failure Indication

IMS-AGW

Context

M

This information element indicates the context for the bearer termination.

Bearer Termination

M

This information element indicates the bearer termination for which the ECN failure is reported.

ECN Error Indication

M

This information element indicates an ECN failure event.

ECN Failure Indication Ack

IMS-ALG

Context

M

This information element indicates the context where the command was executed.

Bearer Termination

M

This information element indicates the bearer termination where the command was executed.

(D)TLS session establishment Failure Indication

IMS-AGW

Context

M

This information element indicates the context for the bearer termination.

Bearer Termination

M

This information element indicates the bearer termination for which the (D)TLS session establishment failure is reported.

(D)TLS session establishment Error Indication

M

This information element indicates a (D)TLS session establishment failure event.

(D)TLS session establishment Failure Indication Ack

IMS-ALG

Context

M

This information element indicates the context where the command was executed.

Bearer Termination

M

This information element indicates the bearer termination where the command was executed.

TCP connection establishment Failure Indication

IMS-AGW

Context

M

This information element indicates the context for the bearer termination.

Bearer Termination

M

This information element indicates the bearer termination for which the TCP connection establishment failure is reported.

TCP connection establishment Error Indication

M

This information element indicates a TCP connection establishment failure event.

TCP connection establishment Failure Indication Ack

IMS-ALG

Context

M

This information element indicates the context where the command was executed.

Bearer Termination

M

This information element indicates the bearer termination where the command was executed.

ICE Connectivity Check Result Notification

IMS-AGW

Context

M

This information element indicates the context for the bearer termination.

Bearer Termination

M

This information element indicates the bearer termination for which the ICE Connectivity Check Result is reported.

ICE Connectivity Check Result

M

This information element indicates an ICE Connectivity Check Result event.

ICE Connectivity Check Result Notification Ack

IMS-ALG

Context

M

This information element indicates the context where the command was executed.

Bearer Termination

M

This information element indicates the bearer termination where the command was executed.

ICE New Peer Reflexive Candidate Notification

IMS-AGW

Context

M

This information element indicates the context for the bearer termination.

Bearer Termination

M

This information element indicates the bearer termination for which the ICE New Peer Reflexive Candidate is reported.

ICE New Peer Reflexive Candidate

M

This information element indicates an ICE New Peer Reflexive Candidate event.

ICE New Peer Reflexive Candidate Notification Ack

IMS-ALG

Context

M

This information element indicates the context where the command was executed.

Bearer Termination

M

This information element indicates the bearer termination where the command was executed.

STUN consent freshness test Failure Notification

eIMS-AGW

Context

M

This information element indicates the context for the bearer termination.

Bearer Termination

M

This information element indicates the bearer termination for which the STUN consent freshness test failure is reported.

STUN consent freshness test failure

M

This information indicates a STUN consent freshness failure event.

STUN consent freshness test Failure Notification

eP-CSCF

Context

M

This information element indicates the context where the command was executed.

Bearer Termination

M

This information element indicates the bearer termination where the command was executed.

Notify SCTP Stream Reset

IMS-AGW

Context

M

This information element indicates the context for the bearer termination.

Bearer Termination

M

This information element indicates the bearer termination where the bearer was released.

Received SCTP Stream Reset Request

M

This information element indicates that an SCTP Stream reset request has been received

SCTP Stream ID

M

This information element indicates the SCTP Stream ID of the related SCTP Stream.

Notify SCTP Stream Reset Ack

IMS-ALG

Context

M

This information element indicates all context are where the command was executed.

Bearer Termination

M

This information element indicates that Bearer termination is where the command was executed.

Notify SCTP Stream Reset Result

IMS-AGW

Context

M

This information element indicates the context for the bearer termination.

Bearer Termination

M

This information element indicates the bearer termination where the bearer was released.

Received SCTP Stream Reset Result

M

This information element indicates that an SCTP Stream reset result has been received and the received result.

SCTP Stream ID

M

This information element indicates the SCTP Stream ID of the related SCTP Stream.

Notify SCTP Stream Reset Result Ack

IMS-ALG

Context

M

This information element indicates all context are where the command was executed.

Bearer Termination

M

This information element indicates that Bearer termination is where the command was executed.

2009-12

CT#46

CP-090822

3GPP TS Presented for approval in CT#46

9.0.0

2009-12

Editiorial clean up

9.0.1

2010-03

CT#47

CP-100050

0001

2

IMS media plane security stage 2

9.1.0

2010-06

CT#48

CP-100289

0003

1

Transport protocol to be indicated to gateway for end-to-end media security

9.2.0

2010-06

CT#48

CP-100284

0004

1

Handling of Through Connection

9.2.0

2010-06

CT#48

0005

–

Handling of RTCP streams requirement update

9.2.0

2010-09

CT#49

CP-100461

0006

1

Procedures for Emergency call

9.3.0

2010-09

CT#49

0007

1

Local IP Resources IE: changing of property

9.3.0

2010-12

CT#50

CP-100685

0008

–

Support of ECN

10.0.0

2011-03

CT#51

CP-110058

0009

2

Handling of ICE Initialisation method for ECN

10.1.0

2011-03

CT#51

0010

2

ECN Support in Iq Interface

10.1.0

2011-09

CT#53

CP-110573

0011

2

Transcoding at ATCF/ATGW during eSRVCC

10.2.0

2011-12

CT#54

CP-110798

0012

1

Explicit Congestion Notification

10.3.0

2011-12

CT#54

CP-110798

0013

1

Corrections to Stage 2 Procedures for Access Transfer Function

10.3.0

2012-03

CT#55

CP-120046

0014

2

Functional Requirements for eMPS MGW control

11.0.0

2012-06

CT#56

CP-120239

0015

3

Multimedia Priority Control of Media Gateway resources

11.1.0

2012-06

CT#56

CP-120226

0018

1

Reference update: draft-ietf-avtcore-ecn-for-rtp

11.1.0

2012-11

Version in the header corrected

11.1.1

2012-12

CT#58

CP-120723

0025

–

Reference update: RFC 6679

11.2.0

2012-12

CT#58

CP-120734

0026

3

Support of Multimedia Priority Service (MPS) in Modify over Iq Interface

11.2.0

2013-06

CT#60

CP-130299

0029

3

Introduction of support for Coordination of Video Orientation (CVO)

12.0.0

2013-09

CT#61

CP-130471

0030

3

Introduction of support for Generic Image Attribute/signalling of image size

12.1.0

2013-09

CT#61

CP-130452

0034

2

CVO Procedural Clarifications

12.1.0

2013-12

CT#62

CP-130636

0035

1

Usage of generic image attributes

12.2.0

2013-12

CT#62

CP-130636

0038

1

Correction of Image Size description

12.2.0

2013-12

CT#62

CP-130619

0037

1

Correction of CVO description

12.2.0

2014-03

CT#63

CP-140025

0040

–

Alignment of IE name for CVO

12.3.0

2014-06

CT#64

CP-140245

0041

1

e2e media security for TCP-based media using TLS – Functional requirements

12.4.0

2014-06

CT#64

CP-140245

0042

4

e2ae media security for TCP based media using TLS – Functional requirements

12.4.0

2014-06

CT#64

CP-140245

0043

2

e2ae media security for UDP-based media using DTLS – Functional requirements

12.4.0

2014-06

CT#64

CP-140245

0054

1

e2e media security for TCP-based media using TLS – Procedures

12.4.0

2014-06

CT#64

CP-140245

0055

2

e2ae media security for TCP-based media using TLS – Procedures

12.4.0

2014-06

CT#64

CP-140245

0056

1

e2ae media security for UDP-based media using DTLS – procedures

12.4.0

2014-06

CT#64

CP-140245

0057

3

Iq requirements for end-to-end TCP bearer connection control and related NAT traversal support

12.4.0

2014-06

CT#64

CP-140256

0045

1

Functional requirements – clarification of "stage 2" convention

12.4.0

2014-06

CT#64

CP-140248

0046

3

Support for Interactive Connectivity Establishment (ICE)

12.4.0

2014-06

CT#64

CP-140249

0052

2

WebRTC media security using DTLS-SRTP

12.4.0

2014-06

CT#64

CP-140249

0053

2

WebRTC support for Iq

12.4.0

2014-09

CT#65

CP-140504

0058

1

Procedures for TCP bearer connection control

12.5.0

2014-09

CT#65

CP-140504

0060

1

Bandwidth adjustment due to e2ae media security

12.5.0

2014-09

CT#65

CP-140504

0061

–

MSRP handling

12.5.0

2014-12

CT#66

CP-140798

0047

3

RTCP port allocation rules – Semantical clarification

12.6.0

2014-12

CT#66

CP-140786

0062

2

E2e media security for TCP-based media – terminals behind NAT

12.6.0

2014-12

CT#66

CP-140786

0066

–

Reference update: RFC 7345 (draft-ietf-mmusic-udptl-dtls)

12.6.0

2014-12

CT#66

CP-140786

0074

–

Reference update: draft-schwarz-mmusic-sdp-for-gw

12.6.0

2014-12

CT#66

CP-140786

0075

2

Client-initiated TLS session renegotiation not supported on the Iq interface

12.6.0

2014-12

CT#66

CP-140777

0063

1

WebRTC Architecture Update

12.6.0

2014-12

CT#66

CP-140777

0064

4

Consent Refreshness in WebRTC

12.6.0

2014-12

CT#66

CP-140777

0067

4

H.248 requirements for WebRTC

12.6.0

2014-12

CT#66

CP-140777

0068

3

Iq requirements for OPUS codec in WebRTC

12.6.0

2014-12

CT#66

CP-140777

0069

3

Iq requirements for ICE-TCP

12.6.0

2014-12

CT#66

CP-140777

0072

5

End-to-access-edge security for DTLS over TCP

12.6.0

2014-12

CT#66

CP-140788

0070

3

Iq requirements for EVS

12.6.0

2014-12

CT#66

CP-140791

0071

3

Alternative connection (ALTC) addresses management

12.6.0

2014-12

CT#66

CP-140799

0039

7

Support of RTP transport multiplexing (Iq, stage 2)

13.0.0

2015-03

CT#67

CP-150027

0077

1

IMS WebRTC reference updates

13.1.0

2015-03

CT#67

CP-150030

0079

1

DTLS roles and cross-reference correction

13.1.0

2015-06

CT#68

CP-150258

0085

–

3GPP TLS profile reference

13.2.0

2015-06

CT#68

CP-150260

0083

1

Bearer Termination in Acknowledgements

13.2.0

2015-06

CT#68

CP-150259

0081

1

EVS corrections

13.2.0

2015-09

CT#69

CP-150457

0088

2

MSRP and WebRTC data channels

13.3.0

2015-09

CT#69

CP-150452

0091

4

Support for Video Enhancements by Region-of-Interest Information Signalling

13.3.0

2015-12

CT#70

CP-150786

0092

7

Support of SDP capability negotiation

13.4.0

2015-12

CT#70

CP-150779

0093

4

WebRTC Data Channel Call flows

13.4.0

2015-12

CT#70

CP-150779

0095

3

Update of WebRTC data channel references

13.4.0

2015-12

CT#70

CP-150779

0100

2

Support of WebRTC data channels (stage 2)

13.4.0

2015-12

CT#70

CP-150779

0101

1

WebRTC Data Channel Procedures

13.4.0

2015-12

CT#70

CP-150779

0102

1

WebRTC Data Channel Information Elements

13.4.0

2015-12

CT#70

CP-150779

0094

4

Support for Video Enhancements by Region-of-Interest Information Signalling

13.4.0

2015-12

CT#70

CP-150779

0097

1

Update of media security references

13.4.0

2015-12

CT#70

CP-150779

0099

2

Update of IMS WebRTC references

13.4.0

2016-03

CT#71

CP-160015

0109

1

Corrections to EVS AMR-WB IO mode-change-capability MIME parameter handling

13.5.0

2016-03

CT#71

CP-160028

0104

2

Release of WebRTC Data Channels

13.5.0

2016-03

CT#71

CP-160034

0106

2

Support of enhanced bandwidth negotiation mechanism for MTSI sessions

13.5.0

2016-03

CT#71

CP-160032

0107

2

WebRTC media plane optimization procedure

13.5.0

2016-09

CT#73

CP-160429

0112

1

Mandatory support of RTP/RTCP multiplexing

14.0.0

2016-09

CT#73

CP-160429

0114

1

Transport of T.140 and BFCP within data channels

14.0.0

2016-12

CT#74

CP-160684

0115

1

Support of RTP-level pause and resume functionality

14.1.0

2016-12

CT#74

CP-160648

0116

4

SDP offer/answer for TLS and DTLS protected media

14.1.0

2016-12

CT#74

CP-160671

0118

2

WebRTC Media plane optimization with DTLS termination

14.1.0

2016-12

CT#74

CP-160671

0119

1

TCP transport for WebRTC data channels

14.1.0

2016-12

CT#74

CP-160647

0125

1

Corrections to handling of the DTX related EVS MIME parameter

14.1.0

2016-12

CT#74

CP-160661

0127

2

Reference update for draft-ietf-mmusic-data-channel-sdpneg

14.1.0

2017-03

CT#75

CP-170023

0129

–

Reference update: draft-ietf-mmusic-dtls-sdp

14.2.0

2017-03

CT#75

CP-170023

0131

–

RFC 4572 obsoleted by draft-ietf-mmusic-4572-update

14.2.0

2017-03

CT#75

CP-170030

0135

1

Updates for WebRTC media plane optimization procedures related to the usage of the "dtls-id" SDP attribute and multiple fingerprints

14.2.0

2017-03

CT#75

CP-170033

0132

–

Reference update: RFC 8035

14.2.0

2017-03

CT#75

CP-170051

0133

2

RTCP Codec Control Commands and Indications

14.2.0

2017-06

CT#76

CP-171015

0137

–

Reference update: RFC 8122

14.3.0

2017-06

CT#76

CP-171027

0138

–

Reference update: draft-ietf-mmusic-mux-exclusive

14.3.0

2017-06

CT#76

CP-171024

0140

–

Reference update: draft-ietf-mmusic-sctp-sdp

14.3.0

2017-06

CT#76

CP-171015

0142

–

Reference update: draft-ietf-mmusic-dtls-sdp

14.3.0

2017-12

CT#78

CP-173014

0144

–

Reference update: draft-ietf-mmusic-dtls-sdp

14.4.0

2018-03

CT#79

CP-180014

0145

1

Removal of IETF draft for transport BFCP within data channels

14.5.0

2018-06

CT#80

–

–

–

Update to Rel-15 version (MCC)

15.0.0

2019-06

CT#84

CP-191053

0149

2

Update IMS-ALG/IMS-AGW procedures for DBI support

16.0.0

2019-12

CT#86

CP-193019

0156

–

Reference update: draft-ietf-mmusic-msrp-usage-data-channel

16.1.0

2019-12

CT#86

CP-193021

0152

1

Reference update: draft-ietf-mmusic-t140-usage-data-channel

16.1.0

2020-12

CT#90e

CP-203024

0164

–

Update on draft references

16.2.0

2020-12

CT#90e

CP-203025

0159

–

Reference update: draft-ietf-mmusic-t140-usage-data-channel

16.2.0

2021-03

CT#91e

CP-210065

0168

–

Reference update: RFC 8842

16.3.0

2021-03

CT#91e

CP-210066

0172

–

Reference update: RFC 8831, RFC 8841, RFC 8864 and RFC 8873

16.3.0

2021-03

CT#91e

CP-210068

0175

–

Reference update: RFC 8858 and RFC 8865

16.3.0

2021-03

CT#91e

CP-213104

0176

–

B

Alignment with SA3 supported TLS profiles

17.0.0

2022-03

CT#95e

CP-220052

0177

1

B

Update of IETF references for ICE, STUN and TURN

17.1.0

2022-06

CT#96

CP-221041

0178

1

B

Support of e2ae security using DTLS-SRTP for non WebRTC sessions

17.2.0