9.3 Messages for circuit-switched call control

24.0083GPPCore network protocolsMobile radio interface Layer 3 specificationRelease 18Stage 3TS

Table 9.54/3GPP TS 24.008 summarizes the messages for circuit-switched call control.

Table 9.54/3GPP TS 24.008: Messages for circuit-mode connections call control.

Call establishment messages:

Reference

ALERTING

9.3.1

CALL CONFIRMED (NOTE)

9.3.2

CALL PROCEEDING

9.3.3

CONNECT

9.3.5

CONNECT ACKNOWLEDGE

9.3.6

EMERGENCY SETUP (NOTE)

9.3.8

PROGRESS

9.3.17

CC-ESTABLISHMENT

9.3.17a

CC-ESTABLISHMENT CONFIRMED

9.3.17b

START CC

9.3.23a

SETUP

9.3.23

Call information phase messages:

Reference

MODIFY (NOTE)

9.3.13

MODIFY COMPLETE (NOTE)

9.3.14

MODIFY REJECT (NOTE)

9.3.15

USER INFORMATION

9.3.31

Call clearing messages:

Reference

DISCONNECT

9.3.7

RELEASE

9.3.18

RELEASE COMPLETE

9.3.19

Messages for supplementary service control

Reference

FACILITY

9.3.9

HOLD (NOTE)

9.3.10

HOLD ACKNOWLEDGE (NOTE)

9.3.11

HOLD REJECT (NOTE)

9.3.12

RETRIEVE (NOTE)

9.3.20

RETRIEVE ACKNOWLEDGE (NOTE)

9.3.21

RETRIEVE REJECT (NOTE)

9.3.22

Miscellaneous messages

Reference

CONGESTION CONTROL

9.3.4

NOTIFY

9.3.16

START DTMF (NOTE)

9.3.24

START DTMF ACKNOWLEDGE (NOTE)

9.3.25

START DTMF REJECT (NOTE)

9.3.26

STATUS

9.3.27

STATUS ENQUIRY

9.3.28

STOP DTMF (NOTE)

9.3.29

STOP DTMF ACKNOWLEDGE (NOTE)

9.3.30

NOTE: Not supported by Blue Book ITU-T Recommendation Q.931 [53].

9.3.1 Alerting

9.3.1.1 Alerting (network to mobile station direction)

This message is sent by the network to the calling mobile station to indicate that the called user alerting has been initiated.

See table 9.55/3GPP TS 24.008.

Message type: ALERTING

Significance: global

Direction: network to mobile station

Table 9.55/3GPP TS 24.008: ALERTING message content (network to mobile station direction)

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Alerting

Message type

M

V

1

message type

10.4

1C

Facility

Facility

O

TLV

2-?

10.5.4.15

1E

Progress indicator

Progress indicator

O

TLV

4

10.5.4.21

7E

User-user

User-user

O

TLV

3-131

10.5.4.25

9.3.1.1.1 Facility

This information element may be used for functional operation of supplementary services.

9.3.1.1.2 Progress indicator

This information element may be included by the network:

– in order to pass information about the call in progress, e.g., in the event of interworking;

– to make the mobile station attach the user connection for speech; and/or

– to make a mobile station supporting multimedia CAT during the alerting phase of a mobile originated multimedia call establishment attach the user connection and setup an H.324 call.

9.3.1.1.3 User-user

This information element may be included by the network if the called remote user included a user-user information element in the ALERTING message.

9.3.1.2 Alerting (mobile station to network direction)

This message is sent by the called mobile station to the network, to indicate that the called user alerting has been initiated.

See table 9.55a/3GPP TS 24.008.

Message type: ALERTING

Significance: global

Direction: mobile station to network

Table 9.55a/3GPP TS 24.008: ALERTING message content (mobile station to network direction)

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Alerting

Message type

M

V

1

message type

10.4

1C

Facility

Facility

O

TLV

2-?

10.5.4.15

7E

User-user

User-user

O

TLV

3-131

10.5.4.25

7F

SS version

SS version indicator

O

TLV

2-3

10.5.4.24

9.3.1.2.1 Facility

This information element may be used for functional operation of supplementary services.

9.3.1.2.2 User-user

This information element may be included when the called mobile station wants to return information to the calling remote user.

9.3.1.2.3 SS version

This information element shall not be included if the facility information element is not present in this message.

This information element shall be included or excluded as defined in 3GPP TS 24.010 [21]. This information element should not be transmitted unless explicitly required by 3GPP TS 24.010 [21].

9.3.2 Call confirmed

This message is sent by the called mobile station to confirm an incoming call request.

See table 9.56/3GPP TS 24.008.

Message type: CALL CONFIRMED

Significance: local

Direction: mobile station to network

Table 9.56/3GPP TS 24.008: CALL CONFIRMED message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Call confirmed

Message type

M

V

1

message type

10.4

D-

Repeat Indicator

Repeat Indicator

C

TV

1

10.5.4.22

04

Bearer capability 1

Bearer capability

O

TLV

3-16

10.5.4.5

04

Bearer capability 2

Bearer capability

O

TLV

3-16

10.5.4.5

08

Cause

Cause

O

TLV

4-32

10.5.4.11

15

CC Capabilities

Call Control Capabilities

O

TLV

4

10.5.4.5a

2D

Stream Identifier

Stream Identifier

O

TLV

3

10.5.4.28

40

Supported Codecs

Supported Codec List

O

TLV

5-n

10.5.4.32

9.3.2.1 Repeat indicator

The repeat indicator information element shall be included if bearer capability 1 information element and bearer capability 2 IE are both included in the message.

9.3.2.2 Bearer capability 1 and bearer capability 2

The bearer capability 1 information element shall be included if and only if at least one of the following six cases holds:

– the mobile station wishes another bearer capability than that given by the bearer capability 1 information element of the incoming SETUP message;

– the bearer capability 1 information element is missing or not fully specified in the SETUP message;

– the bearer capability 1 information element received in the SETUP message is accepted and the "radio channel requirement" of the mobile station is other than "full rate support only mobile station";

– the bearer capability 1 information element received in the SETUP message indicates speech and is accepted and the mobile station supports CTM text telephony;

– the bearer capability 1 information element received in the SETUP message indicates speech and is accepted and the mobile station supports other codecs for GERAN than GSM speech version 1;

– the bearer capability 1 information element received in the SETUP message included the "fixed network user rate" parameter.

When the bearer capability 1 information element is followed by the bearer capability 2 IE in the SETUP, the above rules apply to both bearer capability 1 IE and bearer capability 2 IE. Except those cases identified in 3GPP TS 27.001 [36], if either bearer capability needs to be included, both shall be included.

Furthermore, both bearer capability information elements may be present if the mobile station wishes to reverse the order of occurrence of the bearer capability information elements (which is referred to in the repeat indicator information element, see subclause 10.5.4.22) in cases identified in 3GPP TS 27.001 [36].

If the mobile station wishes to indicate capability for an alternative call mode, which can be entered during the call through in-call modification, this is indicated by adding a bearer capability information element (bearer capability 2 information element, see subclause 5.3.6).

9.3.2.3 Cause

This information element is included if the mobile station is compatible but the user is busy.

9.3.2.4 CC Capabilities

This information element may be included by the mobile station to indicate its call control capabilities.

9.3.2.5 Stream Identifier

This information element shall be included by the mobile station supporting multicall.

9.3.2.6 Supported Codecs

This information element shall be included for speech calls, if the mobile station supports UMTS radio access.

9.3.3 Call proceeding

This message is sent by the network to the calling mobile station to indicate that the requested call establishment information has been received, and no more call establishment information will be accepted.

See table 9.57/3GPP TS 24.008.

Message type: CALL PROCEEDING

Significance: local

Direction: network to mobile station

Table 9.57/3GPP TS 24.008: CALL PROCEEDING message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Call proceeding

Message type

M

V

1

message type

10.4

D-

Repeat Indicator

Repeat Indicator

C

TV

1

10.5.4.22

04

Bearer capability 1

Bearer capability

O

TLV

3-16

10.5.4.5

04

Bearer capability 2

Bearer capability

O

TLV

3-16

10.5.4.5

1C

Facility

Facility

O

TLV

2-?

10.5.4.15

1E

Progress indicator

Progress indicator

O

TLV

4

10.5.4.21

8-

Priority granted

Priority Level

O

TV

1

10.5.1.11

2F

Network Call Control

Network Call Control cap.

O

TLV

3

Capabilities

10.5.4.29

9.3.3.1 Repeat indicator

This information element is included if and only if bearer capability 1 IE and bearer capability 2 IE are both contained in the message.

9.3.3.2 Bearer capability 1 and bearer capability 2

The bearer capability 1 information element shall be included if the network has to specify at least one of the negotiable parameters described in 3GPP TS 27.001 [36], or if the bearer capability 1 information element received in the SETUP message included the "fixed network user rate" parameter.

When the bearer capability 1 information element is followed by the bearer capability 2 IE in the SETUP, the above rule applies to both bearer capability 1 IE and bearer capability 2 IE. Except those cases identified in 3GPP TS 27.001 [36], if either bearer capability needs to be included, both shall be included.

9.3.3.3 Facility

This information element may be used for functional operation of supplementary services.

9.3.3.4 Progress Indicator

This information element may be included:

– in order to pass information about the call in progress e.g. in the event of interworking; and/or

– to make the MS attach the user connection for speech.

9.3.3.5 Priority granted

The priority field is provided by the network in the case that eMLPP is supported.

9.3.3.6 Network Call Control Capabilities

This information shall be included by the network to indicate its call control capabilities if the network supports multicall.and there are no other ongoing calls to the MS.

9.3.4 Congestion control

This message is sent by the network to indicate the establishment or termination of flow control on the transmission of USER INFORMATION messages.

See table 9.58/3GPP TS 24.008.

Message type: CONGESTION CONTROL

Significance: local (note)

Direction: network to mobile station

Table 9.58/3GPP TS 24.008: CONGESTION CONTROL message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Congestion control

Message type

M

V

1

message type

10.4

Congestion level

Congestion level

M

V

1/2

10.5.4.12

Spare half octet

Spare half octet

M

V

1/2

10.5.1.8

08

Cause

Cause

O

TLV

4-32

10.5.4.11

NOTE: This message has local significance, but may carry information of global significance.

9.3.4.1 Cause

This information element is included if the user to user information has been discarded as a result of the congestion situation.

9.3.5 Connect

9.3.5.1 Connect (network to mobile station direction)

This message is sent by the network to the calling mobile station to indicate call acceptance by the called user.

See table 9.59/3GPP TS 24.008.

Message type: CONNECT

Significance: global

Direction: network to mobile station

Table 9.59/3GPP TS 24.008: CONNECT message content(network to mobile station direction)

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Connect

Message type

M

V

1

message type

10.4

1C

Facility

Facility

O

TLV

2-?

10.5.4.15

1E

Progress indicator

Progress indicator

O

TLV

4

10.5.4.21

4C

Connected number

Connected number

O

TLV

3-14

10.5.4.13

4D

Connected subaddress

Connected subaddress

O

TLV

2-23

10.5.4.14

7E

User-user

User-user

O

TLV

3-131

10.5.4.25

9.3.5.1.1 Facility

This information element may be used for functional operation of supplementary services.

9.3.5.1.2 Progress indicator

This information element may be included by the network:

– in order to pass information about the call in progress e.g. in the event of interworking; and/or

– to make the MS attach the user connection for speech.

9.3.5.1.3 User-user

This information element may be included by the network if the remote user awarded the call included a user- user information element in the CONNECT message.

9.3.5.2 Connect (mobile station to network direction)

This message is sent by the called mobile station to the network to indicate call acceptance by the called user.

See table 9.59a/3GPP TS 24.008.

Message type: CONNECT

Significance: global

Direction: mobile station to network

Table 9.59a/3GPP TS 24.008: CONNECT message content (mobile station to network direction)

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Connect

Message type

M

V

1

message type

10.4

1C

Facility

Facility

O

TLV

2-?

10.5.4.15

4D

Connected subaddress

Connected subaddress

O

TLV

2-23

10.5.4.14

7E

User-user

User-user

O

TLV

3-131

10.5.4.25

7F

SS version

SS version indicator

O

TLV

2-3

10.5.4.24

2D

Stream Identifier

Stream Identifier

O

TLV

3

10.5.4.28

9.3.5.2.1 Facility

This information element may be used for functional operation of supplementary services.

9.3.5.2.2 User-user

This information element is included when the answering mobile station wants to return user information to the calling remote user.

9.3.5.2.3 SS version

This information element shall not be included if the facility information element is not present in this message.

This information element shall be included or excluded as defined in 3GPP TS 24.010 [21]. This information element should not be transmitted unless explicitly required by 3GPP TS 24.010 [21].

9.3.5.2.4 Stream Identifier

This information element shall be included by a mobile station that supports multicall when a mobile station has indicated "No Bearer" as the SI value in the CALL CONFIRMED message.

9.3.6 Connect acknowledge

This message is sent by the network to the called mobile station to indicate that the mobile station has been awarded the call. It shall also be sent by the calling mobile station to the network to acknowledge the offered connection.

See table 9.60/3GPP TS 24.008.

Message type: CONNECT ACKNOWLEDGE

Significance: local

Direction: both

Table 9.60/3GPP TS 24.008: CONNECT ACKNOWLEDGE message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Connect acknowledge

Message type

M

V

1

message type

10.4

9.3.7 Disconnect

9.3.7.1 Disconnect (network to mobile station direction)

This message is sent by the network to indicate that the end-to-end connection is cleared.

See table 9.61/3GPP TS 24.008.

Message type: DISCONNECT

Significance: global

Direction: network to mobile station

Table 9.61/3GPP TS 24.008: DISCONNECT message content (network to mobile station direction)

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Disconnect

Message type

M

V

1

message type

10.4

Cause

Cause

M

LV

3-31

10.5.4.11

1C

Facility

Facility

O

TLV

2-?

10.5.4.15

1E

Progress indicator

Progress indicator

O

TLV

4

10.5.4.21

7E

User-user

User-user

O

TLV

3-131

10.5.4.25

7B

Allowed actions $(CCBS)$

Allowed actions

O

TLV

3

10.5.4.27

9.3.7.1.1 Facility

This information element may be used for functional operation of supplementary services, such as the user-user service.

9.3.7.1.2 Progress indicator

This information element is included by the network to make the MS attach the user connection for speech and react in a specific way during call clearing (see subclause 5.4.4).

9.3.7.1.3 User-user

This information element may be included by the network when the remote user initiates call clearing and included a user-user information element in the DISCONNECT message.

9.3.7.1.4 Allowed actions $(CCBS)$

This information element may be included by the network to inform the MS about further possible reactions.

9.3.7.2 Disconnect (mobile station to network direction)

This message is sent by the mobile station to request the network to clear an end-to-end connection.

See table 9.61a/3GPP TS 24.008.

Message type: DISCONNECT

Significance: global

Direction: mobile station to network

Table 9.61a/3GPP TS 24.008: DISCONNECT message content (mobile station to network direction)

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Disconnect

Message type

M

V

1

message type

10.4

Cause

Cause

M

LV

3-31

10.5.4.11

1C

Facility

Facility

O

TLV

2-?

10.5.4.15

7E

User-user

User-user

O

TLV

3-131

10.5.4.25

7F

SS version

SS version indicator

O

TLV

2-3

10.5.4.24

9.3.7.2.1 Facility

This information element may be used for functional operation of supplementary services, such as the user-user service.

9.3.7.2.2 User-user

This information element is included when the mobile station initiates call clearing and wants to pass user information to the remote user at call clearing time.

9.3.7.2.3 SS version

This information element shall not be included if the facility information element is not present in this message.

This information element shall be included or excluded as defined in 3GPP TS 24.010 [21]. This information element should not be transmitted unless explicitly required by 3GPP TS 24.010 [21].

9.3.8 Emergency setup

This message is sent from the mobile station to initiate emergency call establishment.

See table 9.62/3GPP TS 24.008.

Message type: EMERGENCY SETUP

Significance: global

Direction: mobile station to network

Table 9.62/3GPP TS 24.008: EMERGENCY SETUP message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Emergency setup

Message type

M

V

1

message type

10.4

04

Bearer capability

Bearer capability

O

TLV

3-11

10.5.4.5

2D

Stream Identifier

Stream Identifier

O

TLV

3

10.5.4.28

40

Supported Codecs

Supported Codec List

O

TLV

5-n

10.5.4.32

2E

Emergency category

Service category

O

TLV

3

10.5.4.33

9.3.8.1 Bearer capability

If the element is not included, the network shall by default assume speech and select the speech codec according to subclauses 5.2.1.2 and 5.2.1.11. If this information element is included, it shall indicate speech, the appropriate speech version(s) and have the appropriate value of radio channel requirement field.

This information element shall be included by an ME supporting CTM text telephony or supporting at least one speech version for GERAN other than GSM FR speech version 1.

9.3.8.2 Stream Identifier

This information element shall be included by the mobile station supporting multicall.

9.3.8.3 Supported Codecs

This information element shall be included if the mobile station supports UMTS radio access.

9.3.8.4 Emergency category

This information element shall be included if the emergency category is available from the SIM/USIM or the mobile station.

If this information element is included, it shall indicate the selected emergency call category.

If the element is not included, the network shall by default assume a non-specific emergency call.

9.3.9 Facility

9.3.9.1 Facility (network to mobile station direction)

This message is sent by the network to the mobile station to request or acknowledge a supplementary service. The supplementary service to be invoked and its associated parameters are specified in the facility information element.

See table 9.62a/3GPP TS 24.008.

Message type: FACILITY

Significance: local (NOTE 1)

Direction: network to mobile station

Table 9.62a/3GPP TS 24.008: FACILITY message content (network to mobile station direction)

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Facility

Message type

M

V

1

message type

10.4

Facility (note 2)

Facility

M

LV

1-?

10.5.4.15

NOTE 1: This message has local significance; however, it may carry information of global significance.

NOTE 2: The facility information element has no upper length limit except that given by the maximum number of octets in a L3 message, see 3GPP TS 44.006 [19].

9.3.9.2 Facility (mobile station to network direction)

This message is sent by the mobile station to the network to request or acknowledge a supplementary service. The supplementary service to be invoked and its associated parameters are specified in the facility information element.

See table 9.62b/3GPP TS 24.008.

Message type: FACILITY

Significance: local (note 1)

Direction: mobile station to network

Table 9.62b/3GPP TS 24.008: FACILITY message content (mobile station to network direction)

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Facility

Message type

M

V

1

message type

10.4

Facility (note 2)

Facility

M

LV

1-?

10.5.4.15

7F

SS version

SS version indicator

O

TLV

2-3

10.5.4.24

NOTE 1: This message has local significance; however, it may carry information of global significance.

NOTE 2: The facility information element has no upper length limit except that given by the maximum number of octets in a L3 message, see 3GPP TS 44.006 [19].

9.3.9.2.1 SS version

This information element shall be included or excluded as defined in 3GPP TS 24.010 [21]. This information element should not be transmitted unless explicitly required by 3GPP TS 24.010 [21].

9.3.10 Hold

This message is sent by the mobile user to request the hold function for an existing call.

See table 9.62c/3GPP TS 24.008 for the content of the HOLD message.

For the use of this message, see 3GPP TS 24.010 [21].

Message type: HOLD

Significance: local

Direction: mobile station to network

Table 9.62c/3GPP TS 24.008: HOLD message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Hold

Message type

M

V

1

message type

10.4

9.3.11 Hold Acknowledge

This message is sent by the network to indicate that the hold function has been successfully performed.

See table 9.62d/3GPP TS 24.008 for the content of the HOLD ACKNOWLEDGE message.

For the use of this message, see 3GPP TS 24.010 [21].

Message type: HOLD ACKNOWLEDGE

Significance: local

Direction: network to mobile station

Table 9.62d/3GPP TS 24.008: HOLD ACKNOWLEDGE message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Hold Acknowledge

Message type

M

V

1

message type

10.4

9.3.12 Hold Reject

This message is sent by the network to indicate the denial of a request to hold a call.

See table 9.62e/3GPP TS 24.008 for the content of the HOLD REJECT message.

For the use of this message, see 3GPP TS 24.010 [21].

Message type: HOLD REJECT

Significance: local

Direction: network to mobile station

Table 9.62e/3GPP TS 24.008: HOLD REJECT message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Hold Reject

Message type

M

V

1

message type

10.4

Cause

10.5.4.11

M

LV

3-31

9.3.13 Modify

This message is sent by the mobile station to the network or by the network to the mobile station to request a change in bearer capability for a call.

See table 9.63/3GPP TS 24.008.

Message type: MODIFY

Significance: global

Direction: both

Table 9.63/3GPP TS 24.008: MODIFY message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Modify

Message type

M

V

1

message type

10.4

Bearer capability

Bearer capability

M

LV

2-15

10.5.4.5

7C

Low layer comp.

Low layer comp.

O

TLV

2-18

10.5.4.18

7D

High layer comp.

High layer comp.

O

TLV

2-5

10.5.4.16

A3

Reverse call setup

Reverse call setup

O

T

1

direction

direction

10.5.4.22a

A4

Network-initiated Service Upgrade indicator

Network-initiated Service Upgrade indicator

O

T

1

10.5.4.3x

9.3.13.1 Low layer compatibility

This information element shall be included if it was included in the initial SETUP message.

9.3.13.2 High layer compatibility

This information element shall be included if it was included in the initial SETUP message.

9.3.13.3 Reverse call setup direction

This information element is included or omitted in the mobile to network direction according to the rules defined in subclause 5.3.4.3.1.

9.3.13.4 Void

9.3.13.5 Network-initiated Service Upgrade indicator

This information element shall be included only if the MODIFY message was sent by the network to switch from speech to UDI/RDI multimedia due to a network-initiated service upgrade.

9.3.14 Modify complete

This message is sent by the mobile station to the network or by the network to the mobile station to indicate completion of a request to change bearer capability for a call.

See table 9.64/3GPP TS 24.008.

Message type: MODIFY COMPLETE

Significance: global

Direction: both

Table 9.64/3GPP TS 24.008: MODIFY COMPLETE message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Modify complete

Message type

M

V

1

message type

10.4

Bearer capability

Bearer capability

M

LV

2-15

10.5.4.5

7C

Low layer comp.

Low layer comp.

O

TLV

2-18

10.5.4.18

7D

High layer comp.

High layer comp.

O

TLV

2-5

10.5.4.16

A3

Reverse call setup

Reverse call setup

O

T

1

direction

direction

10.5.4.22a

9.3.14.1 Low layer compatibility

This information element shall be included if it was included in the initial SETUP message.

9.3.14.2 High layer compatibility

This information element shall be included if it was included in the initial SETUP message.

9.3.14.3 Reverse call setup direction

This information element is included or omitted according to the rules defined in subclause 5.3.4.3.2.

9.3.15 Modify reject

This message is sent by the mobile station to the network or by the network to the mobile station to indicate failure of a request to change the bearer capability for a call.

See table 9.65/3GPP TS 24.008.

Message type: MODIFY REJECT

Significance: global

Direction: both

Table 9.65/3GPP TS 24.008: MODIFY REJECT message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Modify reject

Message type

M

V

1

message type

10.4

Bearer capability

Bearer capability

M

LV

2-15

10.5.4.5

Cause

Cause

M

LV

3-31

10.5.4.11

7C

Low layer comp.

Low layer comp.

O

TLV

2-18

10.5.4.18

7D

High layer comp.

High layer comp.

O

TLV

2-5

10.5.4.16

9.3.15.1 Low layer compatibility

This information element shall be included if it was included in the initial SETUP message.

9.3.15.2 High layer compatibility

This information element shall be included if it was included in the initial SETUP message.

9.3.16 Notify

This message is sent either from the mobile station or from the network to indicate information pertaining to a call, such as user suspended.

See table 9.66/3GPP TS 24.008.

Message type: NOTIFY

Significance: access

Direction: both

Table 9.66/3GPP TS 24.008: NOTIFY message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Notify

Message type

M

V

1

message type

10.4

Notification indicator

Notification indicator

M

V

1

10.5.4.20

9.3.17 Progress

This message is sent from the network to the mobile station to indicate the progress of a call in the event of interworking or in connection with the provision of in-band information/patterns.

See table 9.67/3GPP TS 24.008.

Message type: PROGRESS

Significance: global

Direction: network to mobile station

Table 9.67/3GPP TS 24.008: PROGRESS message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Progress

Message type

M

V

1

message type

10.4

Progress indicator

Progress indicator

M

LV

3

10.5.4.21

7E

User-user

User-user

O

TLV

3-131

10.5.4.25

9.3.17.1 User-user

This information element is included when the PROGRESS message is sent by the network when the call has been cleared by the remote user before it reached the active state to indicate that the remote user wants to pass user information at call clearing time.

9.3.17.2 Progress indicator

This information element may be included by the network:

– in order to pass information about the call in progress, e.g., in the event of interworking;

– to make the mobile station attach the user connection for speech; and/or

– to make a mobile station supporting multimedia CAT during the alerting phase of a mobile originated multimedia call establishment attach the user connection and setup an H.324 call.

9.3.17a CC-Establishment $(CCBS)$

A mobile station that does not support the "Network initiated MO call" option shall treat this message as a message with message type not defined for the PD.

This message is sent from the network to the mobile station to provide information on the call that the mobile station should attempt to establish.

See Table 9.67a/3GPP TS 24.008.

Message type: CC-ESTABLISHMENT

Significance: local

Direction: network to mobile station

Table 9.67a/3GPP TS 24.008: CC-Establishment message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

CC-Establishment

Message type

M

V

1

message type

10.4

Setup container

Container

M

LV

3-n

10.5.4.22b

9.3.17a.1 Void

9.3.17a.2 Setup container

This information element contains the contents of a SETUP message (Mobile Station to Network).

9.3.17b CC-Establishment confirmed $(CCBS)$

A Network that does not support the "Network initiated MO call" option shall treat this message as a message with message type not defined for the PD.

This message is sent by the mobile station to the network to indicate the requested channel characteristics for the call which may be initiated by the mobile station.

See Table 9.67b/3GPP TS 24.008.

Message type: CC-ESTABLISHMENT CONFIRMED

Significance: local

Direction: mobile station to network

Table 9.67b/3GPP TS 24.008: CC-ESTABLISHMENT CONFIRMED message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

CC-Establishment

confirmed

Message type

M

V

1

message type

10.4

D-

Repeat Indicator

Repeat Indicator

C

TV

1

10.5.4.22

04

Bearer capability 1

Bearer capability

M

TLV

3-16

10.5.4.5

04

Bearer capability 2

Bearer capability

O

TLV

3-16

10.5.4.5

08

Cause

Cause

O

TLV

4-32

10.5.4.11

40

Supported Codecs

Supported Codec List

O

TLV

5-n

10.5.4.32

9.3.17b.1 Repeat indicator

The repeat indicator information element shall be included if bearer capability 1 information element and bearer capability 2 IE are both included in the message.

9.3.17b.2 Bearer capability 1 and bearer capability 2

If, in any subsequent SETUP message to be sent on this transaction the bearer capability 1 information element is to be followed by the bearer capability 2 IE, then the bearer capability 2 IE shall be included in this message.

9.3.17b.3 Cause

This information element is included if the mobile station is compatible but the user is busy.

9.3.17b.4 Supported Codecs

This information element shall be included for speech calls, if the mobile station supports UMTS radio access.

9.3.18 Release

9.3.18.1 Release (network to mobile station direction)

This message is sent, from the network to the mobile station to indicate that the network intends to release the transaction identifier, and that the receiving equipment shall release the transaction identifier after sending RELEASE COMPLETE.

See table 9.68/3GPP TS 24.008.

Message type: RELEASE

Significance: local (note)

Direction: network to mobile station

Table 9.68/3GPP TS 24.008: RELEASE message content (network to mobile station direction)

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Release

Message type

M

V

1

message type

10.4

08

Cause

Cause

O

TLV

4-32

10.5.4.11

08

Second cause

Cause

O

TLV

4-32

10.5.4.11

1C

Facility

Facility

O

TLV

2-?

10.5.4.15

7E

User-user

User-user

O

TLV

3-131

10.5.4.25

NOTE: This message has local significance; however, it may carry information of global significance when used as the first call clearing message.

9.3.18.1.1 Cause

This information element shall be included if this message is used to initiate call clearing.

9.3.18.1.2 Second cause

This information element may be included under the conditions described in subclause 5.4.4.1.2.3 "Abnormal cases" (Clearing initiated by the network).

9.3.18.1.3 Facility

This information element may be included for functional operation of supplementary services.

9.3.18.1.4 User-user

This information element may be included in the network to mobile station direction, when the RELEASE message is used to initiate call clearing, in order to transport user-user information from the remote user.

9.3.18.2 Release (mobile station to network direction)

This message is sent from the mobile station to the network to indicate that the mobile station intends to release the transaction identifier, and that the receiving equipment shall release the transaction identifier after sending RELEASE COMPLETE.

See table 9.68a/3GPP TS 24.008.

Message type: RELEASE

Significance: local (note)

Direction: mobile station to network direction

Table 9.68a/3GPP TS 24.008: RELEASE message content (mobile station to network direction)

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Release

Message type

M

V

1

message type

10.4

08

Cause

Cause

O

TLV

4-32

10.5.4.11

08

Second cause

Cause

O

TLV

4-32

10.5.4.11

1C

Facility

Facility

O

TLV

2-?

10.5.4.15

7E

User-user

User-user

O

TLV

3-131

10.5.4.25

7F

SS version

SS version indicator

O

TLV

2-3

10.5.4.24

NOTE: This message has local significance; however, it may carry information of global significance when used as the first call clearing message.

9.3.18.2.1 Cause

This information element shall be included if this message is used to initiate call clearing.

9.3.18.2.2 Second cause

This information element may be included under the conditions described in subclause 5.4.3.5 "Abnormal cases" (Clearing initiated by the mobile station).

9.3.18.2.3 Facility

This information element may be included for functional operation of supplementary services.

9.3.18.2.4 User-user

This information element is included when the RELEASE message is used to initiate call clearing and the mobile station wants to pass user information to the remote user at call clearing time.

9.3.18.2.5 SS version

This information element shall not be included if the facility information element is not present in this message.

This information element shall be included or excluded as defined in 3GPP TS 24.010 [21]. This information element should not be transmitted unless explicitly required by 3GPP TS 24.010 [21].

9.3.18a Recall $(CCBS)$

A mobile station that does not support the "Network initiated MO call" option shall treat this message as a message with message type not defined for the PD.

This message is sent from the network to the mobile station to initiate the sending of the SETUP message. In addition it provides information for user notification.

See Table 9.68b/3GPP TS 24.008.

Message type: RECALL

Significance: local

Direction: network to mobile station

Table 9.68b/3GPP TS 24.008: Recall message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Recall

Message type

M

V

1

message type

10.4

Recall Type

Recall Type

M

V

1

10.5.4.21a

Facility

Facility

M

LV

2-n

10.5.4.15

9.3.18a.1 Recall Type

The purpose of the recall type information element is to describe the reason for the recall.

9.3.18a.2 Facility

The information element shall be included for functional operation of supplementary services.

9.3.19 Release complete

9.3.19.1 Release complete (network to mobile station direction)

This message is sent from the network to the mobile station to indicate that the network has released the transaction identifier and that the mobile station shall release the transaction identifier.

See table 9.69/3GPP TS 24.008.

Message type: RELEASE COMPLETE

Significance: local (note)

Direction: network to mobile station direction

Table 9.69/3GPP TS 24.008: RELEASE COMPLETE message content (network to mobile station direction)

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Release complete

Message type

M

V

1

message type

10.4

08

Cause

Cause

O

TLV

4-32

10.5.4.11

1C

Facility

Facility

O

TLV

2-?

10.5.4.15

7E

User-user

User-user

O

TLV

3-131

10.5.4.25

NOTE: This message has local significance; however, it may carry information of global significance when used as the first call clearing message.

9.3.19.1.1 Cause

This information element shall be included if the message is used to initiate call clearing.

9.3.19.1.2 Facility

This information element may be included for functional operation of supplementary services.

9.3.19.1.3 User-user

This information element is included in the network to mobile station direction, when the RELEASE COMPLETE message is used to initiate call clearing, in order to transport user-user information from the remote user.

9.3.19.2 Release complete (mobile station to network direction)

This message is sent from the mobile station to the network to indicate that the mobile station has released the transaction identifier and that the network shall release the transaction identifier.

See table 9.69a/3GPP TS 24.008.

Message type: RELEASE COMPLETE

Significance: local (note)

Direction: mobile station to network direction

Table 9.69a/3GPP TS 24.008: RELEASE COMPLETE message content (mobile station to network direction)

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Release complete

Message type

M

V

1

message type

10.4

08

Cause

Cause

O

TLV

4-32

10.5.4.11

1C

Facility

Facility

O

TLV

2-?

10.5.4.15

7E

User-user

User-user

O

TLV

3-131

10.5.4.25

7F

SS version

SS version indicator

O

TLV

2-3

10.5.4.24

NOTE: This message has local significance; however, it may carry information of global significance when used as the first call clearing message.

9.3.19.2.1 Cause

This information element shall be included if the message is used to initiate call clearing.

9.3.19.2.2 Facility

This information element may be included for functional operation of supplementary services.

9.3.19.2.3 User-user

This information element is included in the mobile station to network direction when the RELEASE COMPLETE message is used to initiate call clearing and the mobile station wants to pass user information to the remote user at call clearing time.

9.3.19.2.4 SS version.

This information element shall not be included if the facility information element is not present in this message.

This information element shall be included or excluded as defined in 3GPP TS 24.010 [21]. This information element should not be transmitted unless explicitly required by 3GPP TS 24.010 [21].

9.3.20 Retrieve

This message is sent by the mobile user to request the retrieval of a held call.

See table 9.69b/3GPP TS 24.008 for the content of the RETRIEVE message.

For the use of this message, see 3GPP TS 24.010 [21].

Message type: RETRIEVE

Significance: local

Direction: mobile station to network

Table 9.69b/3GPP TS 24.008: RETRIEVE message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Retrieve

Message type

M

V

1

message type

10.4

9.3.21 Retrieve Acknowledge

This message is sent by the network to indicate that the retrieve function has been successfully performed.

See table 9.69c/3GPP TS 24.008 for the content of the RETRIEVE ACKNOWLEDGE message.

For the use of this message, see 3GPP TS 24.010 [21].

Message type: RETRIEVE ACKNOWLEDGE

Significance: local

Direction: network to mobile station

Table 9.69c/3GPP TS 24.008: RETRIEVE ACKNOWLEDGE message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Retrieve Acknowledge

Message type

M

V

1

message type

10.4

9.3.22 Retrieve Reject

This message is sent by the network to indicate the inability to perform the requested retrieve function.

See table 9.69d/3GPP TS 24.008 for the content of the RETRIEVE REJECT message.

For the use of this message, see 3GPP TS 24.010 [21].

Message type: RETRIEVE REJECT

Significance: local

Direction: network to mobile station

Table 9.69d/3GPP TS 24.008: RETRIEVE REJECT message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

Protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Retrieve Reject

Message type

M

V

1

Message type

10.4

Cause

10.5.4.11

M

LV

3-31

9.3.23 Setup

9.3.23.1 Setup (mobile terminated call establishment)

This message is sent by the network to the mobile station to initiate a mobile terminated call establishment.

See table 9.70/3GPP TS 24.008.

Message type: SETUP

Significance: global

Direction: network to mobile station

Table 9.70/3GPP TS 24.008: SETUP message content (network to mobile station direction)

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

Protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Setup

Message type

M

V

1

Message type

10.4

D-

BC repeat indicator

Repeat indicator

C

TV

1

10.5.4.22

04

Bearer capability 1

Bearer capability

O

TLV

3-16

10.5.4.5

04

Bearer capability 2

Bearer capability

O

TLV

3-16

10.5.4.5

1C

Facility

Facility

O

TLV

2-?

10.5.4.15

1E

Progress indicator

Progress indicator

O

TLV

4

10.5.4.21

34

Signal

Signal

O

TV

2

10.5.4.23

5C

Calling party BCD

Calling party BCD num.

O

TLV

3-14

Number

10.5.4.9

5D

Calling party sub-

Calling party subaddr.

O

TLV

2-23

Address

10.5.4.10

5E

Called party BCD

Called party BCD num.

O

TLV

3-19

Number

10.5.4.7

6D

Called party sub-

Called party subaddr.

O

TLV

2-23

Address

10.5.4.8

74

Redirecting party BCD number

Redirecting party BCD num.

10.5.4.21b

O

TLV

3-19

75

Redirecting party sub-address

Redirecting party subaddress.

10.5.4.21c

O

TLV

2-23

D-

LLC repeat indicator

Repeat indicator

O

TV

1

10.5.4.22

7C

Low layer

Low layer comp.

O

TLV

2-18

Compatibility I

10.5.4.18

7C

Low layer

Low layer comp.

C

TLV

2-18

Compatibility II

10.5.4.18

D-

HLC repeat indicator

Repeat indicator

O

TV

1

10.5.4.22

7D

High layer

High layer comp.

O

TLV

2-5

Compatibility i

10.5.4.16

7D

High layer

High layer comp.

C

TLV

2-5

Compatibility ii

10.5.4.16

7E

User-user

User-user

O

TLV

3-35

10.5.4.25

8-

Priority

Priority Level

O

TV

1

10.5.1.11

19

Alert

Alerting Pattern

O

TLV

3

10.5.4.26

2F

Network Call Control

Network Call Control cap.

O

TLV

3

Capabilities

10.5.4.29

3A

Cause of No CLI

Cause of No CLI

O

TLV

3

10.5.4.30

41

Backup bearer capability

Backup bearer capability

O

TLV

3-15

10.5.4.4a

9.3.23.1.1 BC repeat indicator

The BC repeat indicator information element is included if and only if bearer capability 1 information element and bearer capability 2 IE are both present in the message.

9.3.23.1.2 Bearer capability 1 and bearer capability 2

The bearer capability 1 information element may be omitted in the case where the mobile subscriber is allocated only one directory number for all services (ref.: 3GPP TS 29.007 [38]). The bearer capability 2 IE is missing at least if the bearer capability 1 IE is missing.

If the MSC wishes to indicate capability for an altenative call mode, which can be entered through fallback, this is indicated by adding a bearer capability information element (bearer capability) 2 element (see subclause 5.3.6).

9.3.23.1.3 Facility

This information element may be included for functional operation of supplementary services.

9.3.23.1.4 Progress indicator

This information element is included by the network

– in order to pass information about the call in progress e.g. in the event of interworking and/or

– to make the MS attach the user connection for speech.

9.3.23.1.4a Called party BCD number

For all bands except for PCS1900, the maximum length of this IE sent by the network shall be 13 octets

9.3.23.1.5 Called party subaddress

Included in the Network-to-mobile station direction if the calling user includes a called party subaddress information element in the SETUP message.

9.3.23.1.6 LLC repeat indicator

The LLC repeat indicator information element is included if and only if both following conditions hold:

– The BC repeat indicator IE is contained in the message.

– The low layer compatibility I IE is contained in the message.

If included, the LLC repeat indicator shall specify the same repeat indication as the BC repeat indicator IE.

9.3.23.1.7 Low layer compatibility I

Included in the network-to-mobile station direction if the calling user specified a low layer compatibility.

9.3.23.1.8 Low layer compatibility II

Included if and only if the LLC repeat indicator information element is contained in the message.

9.3.23.1.9 HLC repeat indicator

The HLC repeat indicator information element is included if and only both following conditions hold:

– The BC repeat indicator IE is contained in the message.

– The high layer compatibility i IE is contained in the message.

If included, the HLC repeat indicator shall specify the same repeat indication as the BC repeat indicator IE.

9.3.23.1.10 High layer compatibility i

Included in the network-to-mobile station direction if the calling user specified a high layer compatibility.

9.3.23.1.11 High layer compatibility ii

Included if and only if the HLC repeat indicator information element is contained in the message.

9.3.23.1.12 User-user

May be included in the network to called mobile station direction when the calling remote user included a user-user information element in the SETUP message.

9.3.23.1.13 Redirecting party BCD number

May be included in the network to called mobile station direction when the call has been redirected.

9.3.23.1.14 Redirecting party subaddress

May be included in the network to called mobile station direction when the calling remote user included a called party subaddress in the SETUP message and the call has been redirected

9.3.23.1.15 Priority

May be included by the network to indicate the priority of the incoming call if eMLPP is used.

9.3.23.1.16 Alert $(Network Indication of Alerting in the MS)$

May be included by the network to give some indication about alerting (category or level). If supported in the MS, this optional indication is to be used by the MS as specified in 3GPP TS 22.101 [8].

9.3.23.1.17 Network Call Control Capabilities

This information shall be included by the network to indicate its call control capabilities if the network supports multicall.and there are no other ongoing calls to the MS.

9.3.23.1.18 Cause of No CLI

This IE may be included by the network as defined by 3GPP TS 24.081 [25].

When both Calling Party BCD number IE and Cause of No CLI IE are included in SETUP message then the Cause of No CLI IE provides additional information on why the number digits are not present.

9.3.23.1.19 Backup bearer capability

The backup bearer capability IE may be included by the network only if there are no bearer capability IEs contained in the message.

NOTE: The MSC may use the backup bearer capability IE if it is not able to provide a complete bearer capability IE.

9.3.23.2 Setup (mobile originating call establishment)

This message is sent from the mobile station to the network to initiate a mobile originating call establishment.

See table 9.70a/3GPP TS 24.008.

Message type: SETUP

Significance: global

Direction: mobile station to network

Table 9.70a/3GPP TS 24.008: SETUP message content (mobile station to network direction)

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Setup

Message type

M

V

1

message type

10.4

D-

BC repeat indicator

Repeat indicator

C

TV

1

10.5.4.22

04

Bearer capability 1

Bearer capability

M

TLV

3-16

10.5.4.5

04

Bearer capability 2

Bearer capability

O

TLV

3-16

10.5.4.5

1C

Facility(simple recall alignment)

Facility

O

TLV

2-

10.5.4.15

5D

Calling party sub-

Calling party subaddr.

O

TLV

2-23

address

10.5.4.10

5E

Called party BCD

Called party BCD num.

M

TLV

3-43

number

10.5.4.7

6D

Called party sub-

Called party subaddr.

O

TLV

2-23

address

10.5.4.8

D-

LLC repeat indicator

Repeat indicator

O

TV

1

10.5.4.22

7C

Low layer

Low layer comp.

O

TLV

2-18

compatibility I

10.5.4.18

7C

Low layer

Low layer comp.

O

TLV

2-18

compatibility II

10.5.4.18

D-

HLC repeat indicator

Repeat indicator

O

TV

1

10.5.4.22

7D

High layer

High layer comp.

O

TLV

2-5

compatibility i

10.5.4.16

7D

High layer

High layer comp.

O

TLV

2-5

compatibility ii

10.5.4.16

7E

User-user

User-user

O

TLV

3-35

10.5.4.25

7F

SS version

SS version indicator

O

TLV

2-3

10.5.4.24

A1

CLIR suppression

CLIR suppression

C

T

1

10.5.4.11a

A2

CLIR invocation

CLIR invocation

C

T

1

10.5.4.11b

15

CC capabilities

Call Control Capabilities

O

TLV

4

10.5.4.5a

1D

Facility $(CCBS)$

Facility

O

TLV

2-?

(advanced recall alignment)

10.5.4.15

1B

Facility (recall alignment

Facility

O

TLV

2-?

Not essential) $(CCBS)$

10.5.4.15

2D

Stream Identifier

Stream Identifier

O

TLV

3

10.5.4.28

40

Supported Codecs

Supported Codec List

O

TLV

5-n

10.5.4.32

A3

Redial

Redial

O

T

1

10.5.4.34

9.3.23.2.1 BC repeat indicator

The BC repeat indicator information element is included if and only if bearer capability 1 IE and bearer capability 2 IE are both present in the message.

9.3.23.2.2 Facility

The information element may be included for functional operation of supplementary services.

Three different codings of this IE exist, for further details see 3GPP TS 24.010 [21].

9.3.23.2.3 LLC repeat indicator

The LLC repeat indicator information element is included if and only if both following conditions hold:

– The BC repeat indicator IE is contained in the message.

– The low layer compatibility I IE is contained in the message.

If included, the LLC repeat indicator shall specify the same repeat indication as the BC repeat indicator IE.

9.3.23.2.4 Low layer compatibility I

The information element is included in the MS-to-network direction when the calling MS wants to pass low layer compatibility information to the called user.

9.3.23.2.5 Low layer compatibility II

Included if and only if the LLC repeat indicator information element is contained in the message.

9.3.23.2.6 HLC repeat indicator

The HLC repeat indicator information element is included if and only if both following conditions hold:

– The BC repeat indicator IE is contained in the message.

– The high layer compatibility i IE is contained in the message.

If included, the HLC repeat indicator shall specify the same repeat indication as the BC repeat indicator IE.

9.3.23.2.7 High layer compatibility i

The information element is included when the calling MS wants to pass high layer compatibility information to the called user.

9.3.23.2.8 High layer compatibility ii

Included if and only if the HLC repeat indicator information element is contained in the message.

9.3.23.2.9 User-user

The information element is included in the calling mobile station to network direction when the calling mobile station wants to pass user information to the called remote user.

9.3.23.2.10 SS version

This information element shall not be included if the facility information element is not present in this message.

This information element shall be included or excluded as defined in 3GPP TS 24.010 [21]. This information element should not be transmitted unless explicitly required by 3GPP TS 24.010 [21].

9.3.23.2.11 CLIR suppression

The information element may be included by the MS (see 3GPP TS 24.081 [25]). If this information element is included the CLIR invocation IE shall not be included.

9.3.23.2.12 CLIR invocation

The information element may be included by the MS (see 3GPP TS 24.081 [25]). If this information element is included the CLIR suppression IE shall not be included.

9.3.23.2.13 CC Capabilities

This information element may be included by the mobile station to indicate its call control capabilities.

9.3.23.2.14 Stream Identifier

This information element shall be included by the mobile station supporting multicall.

9.3.23.2.15 Bearer capability 1 and bearer capability 2

If the mobile station wishes to indicate capability for an altenative call mode, which can be entered throughfallback, this is indicated by adding a bearer capability information element (bearer capability) 2 element (see subclause 5.3.6).

9.3.23.2.16 Supported Codecs

This information element shall be included for speech calls, if the mobile station supports UMTS radio access.

9.3.23.2.17 Redial

This information element shall be included if the mobile station is attempting to set up a call to switch from speech to multimedia or vice-versa.

9.3.23a Start CC $(CCBS)$

A Network that does not support the "Network initiated MO call" option shall treat this message as a message with message type not defined for the PD.

This message is sent by the mobile station to the network to open a Call Control transaction which the network has requested the mobile station to open.

See Table 9.70b/3GPP TS 24.008.

Message type: START CC

Significance: local

Direction: mobile station to network

Table 9.70b/3GPP TS 24.008: START CC message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

Protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Start CC

Message type

M

V

1

message type

10.4

15

CC Capabilities

Call Control Capabilities

O

TLV

4

10.5.4.5a

9.3.23a.1 CC Capabilities

This information element may be included by the mobile station to indicate its call control capabilities

9.3.24 Start DTMF

This message is sent by the mobile station to the network and contains the digit the network should reconvert back into a DTMF tone which is then applied towards the remote user.

See table 9.71/3GPP TS 24.008.

Message type: START DTMF

Significance: local

Direction: mobile station to network

Table 9.71/3GPP TS 24.008: START DTMF message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Start DTMF

Message type

M

V

1

message type

10.4

2C

Keypad facility

Keypad facility

M

TV

2

10.5.4.17

9.3.25 Start DTMF Acknowledge

This message is sent by the network to the mobile station to indicate the successful initiation of the action requested by the START DTMF message (conversion of the digit contained in this message into a DTMF tone).

See table 9.72/3GPP TS 24.008.

Message type: START DTMF ACKNOWLEDGE

Significance: local

Direction: network to mobile station

Table 9.72/3GPP TS 24.008: START DTMF ACKNOWLEDGE message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Start DTMF acknowledge

Message type

M

V

1

message type

10.4

2C

Keypad facility

Keypad facility

M

TV

2

10.5.4.17

9.3.25.1 Keypad facility

This information element contains the digit corresponding to the DTMF tone that the network applies towards the remote user.

9.3.26 Start DTMF reject

This message is sent by the network to the mobile station, if the network can not accept the START DTMF message.

See table 9.73/3GPP TS 24.008.

Message type: START DTMF REJECT

Significance: local

Direction: network to mobile station

Table 9.73/3GPP TS 24.008: START DTMF REJECT message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Start DTMF reject

Message type

M

V

1

message type

10.4

Cause

Cause

M

LV

3-31

10.5.4.11

9.3.27 Status

This message is sent by the mobile station or the network at any time during a call to report certain error conditions listed in clause 8. It shall also be sent in response to a STATUS ENQUIRY message.

See table 9.74/3GPP TS 24.008.

Message type: STATUS

Significance: local

Direction: both

Table 9.74/3GPP TS 24.008: STATUS message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Status

Message type

M

V

1

message type

10.4

Cause

Cause

M

LV

3-31

10.5.4.11

Call state

Call state

M

V

1

10.5.4.6

24

Auxiliary states

Auxiliary states

O

TLV

3

10.5.4.4

9.3.27.1 Auxiliary states

The information element is included if and only if the call state is "active" or "mobile originating modify" and any auxiliary state is different from "idle". For the definition of the auxiliary states see 3GPP TS 24.083 [27] and 3GPP TS 24.084 [28]

9.3.28 Status enquiry

This message is sent by the mobile station or the network at any time to solicit a STATUS message from the peer layer 3 entity. Sending of STATUS message in response to a STATUS ENQUIRY message is mandatory.

See table 9.75/3GPP TS 24.008.

Message type: STATUS ENQUIRY

Significance: local

Direction: both

Table 9.75/3GPP TS 24.008: STATUS ENQUIRY message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Status enquiry

Message type

M

V

1

message type

10.4

9.3.29 Stop DTMF

This message is sent by a mobile station to the network and is used to stop the DTMF tone sent towards the remote user.

See table 9.76/3GPP TS 24.008.

Message type: STOP DTMF

Significance: local

Direction: mobile station to network

Table 9.76/3GPP TS 24.008: STOP DTMF message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Stop DTMF

Message type

M

V

1

message type

10.4

9.3.30 Stop DTMF acknowledge

This message is sent by the network to the mobile station to indicate that the sending of the DTMF tone has been stopped.

See table 9.77/3GPP TS 24.008.

Message type: STOP DTMF ACKNOWLEDGE

Significance: local

Direction: network to mobile station

Table 9.77/3GPP TS 24.008: STOP DTMF ACKNOWLEDGE message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

Stop DTMF acknowledge

Message type

M

V

1

message type

10.4

9.3.31 User information

This message is sent by the mobile station to the network to transfer information to the remote user. This message is also sent by the network to the mobile station to deliver information transferred from the remote user. This message is used if the user-to-user transfer is part of an allowed information transfer as defined in 3GPP TS 24.010 [21].

See table 9.78/3GPP TS 24.008.

Message type: USER INFORMATION

Significance: access

Direction: both

Table 9.78/3GPP TS 24.008: USER INFORMATION message content

IEI

Information element

Type/Reference

Presence

Format

Length

Call control

Protocol discriminator

M

V

1/2

protocol discriminator

10.2

Transaction identifier

Transaction identifier

M

V

1/2

10.3.2

User Information

Message type

M

V

1

message type

10.4

User-user

User-user

M

LV

2-130

10.5.4.25

A0

More data

More data

O

T

1

10.5.4.19

9.3.31.1 User-user

Some networks may only support a maximum length of 35 octets. Procedures for interworking are not currently defined and are for further study.

R98 and earlier versions of this protocol specified a minimum length of 3 octets for this information element (not counting the IEI). To avoid interworking problems with mobile stations supporting only R98 or earlier versions of the protocol, the network shall deliver the User information message to these mobile stations only if the length of the User-user IE is greater or equal to 3 octets (not counting the IEI).

9.3.31.2 More data

The information element is included by the sending user to indicate that another USER INFORMATION message pertaining to the same message block will follow.