C.11 Generic test procedure for setting up MTSI MT speech call – EPS

34.229-13GPPInternet Protocol (IP) multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP)Part 1: Protocol conformance specificationRelease 16TSUser Equipment (UE) conformance specification

The generic test procedure for setting up MTSI MT speech call may be performed after successful IMS or early IMS registration.

Test procedure

1) SS sends an INVITE request to the UE.

2) Void.

3) SS may receive 100 Trying from the UE.

4) SS expects and receives 183 Session Progress from the UE.

5) SS sends PRACK to the UE to acknowledge the 183 Session Progress.

6) SS expects and receives 200 OK for PRACK from the UE.

7) SS sends UPDATE to the UE, with SDP indicating that precondition is met on the server side.

8) SS expects and receives 200 OK for UPDATE from the UE, with proper SDP as answer.

9) SS may receive 180 Ringing from the UE.

10) SS may send PRACK to the UE to acknowledge the 180 Ringing.

11) SS may receive 200 OK for PRACK from the UE.

11A) The UE accepts the session invite.

12) SS expects and receives 200 OK for INVITE from the UE.

13) SS sends ACK to the UE.

14) SS sends BYE to the UE.

15) SS expects and receives 200 OK for BYE from the UE.

Expected sequence

Step

Direction

Message

Comment

UE

SS

1

🡨

INVITE

SS sends INVITE with the first SDP offer.

2

Void

3

🡪

100 Trying

(Optional) The UE responds with a 100 Trying provisional response

4

🡪

183 Session Progress

The UE sends 183 response reliably with the SDP answer to the offer in INVITE

5

🡨

PRACK

SS acknowledges the receipt of 183 response from the UE.

6

🡪

200 OK

The UE responds to PRACK with 200 OK.

7

🡨

UPDATE

SS sends an UPDATE with SDP offer indicating SS reserved resources.

8

🡪

200 OK

The UE acknowledges the UPDATE with 200 OK and includes SDP answer to acknowledge its current precondition status.

9

🡪

180 Ringing

(Optional) The UE responds to INVITE with 180 Ringing.

10

🡨

PRACK

(Optional) SS shall send PRACK only if the 180 response contains 100rel option tag within the Require header.

11

🡪

200 OK

(Optional) The UE acknowledges the PRACK with 200 OK.

11A

Make UE accept the speech AMR offer.

12

🡪

200 OK

The UE responds to INVITE with a 200 OK final response after the user answers the call.

13

🡨

ACK

The SS acknowledges the receipt of 200 OK for INVITE.

14

🡨

BYE

The SS sends BYE to release the call.

15

🡪

200 OK

The UE sends 200 OK for the BYE request and ends the call.

NOTE: The default messages contents in annex A are used with condition “IMS security” or “early IMS security” when applicable

Specific Message Content

INVITE (Step 1)

Use the default message “INVITE for MT Call” in annex A.2.9 with the following exceptions:

Header/param

Value/remark

Supported

option-tag

precondition

Message-body

The following SDP types and values.

Session description:

  • v=0
  • o=- 1111111111 1111111111 IN (addrtype) (unicast-address for SS)
  • s=-
  • c=IN (addrtype) (connection-address for SS)
  • b=AS:37

Time description:

  • t=0 0

Media description:

  • m=audio (transport port) RTP/AVP 97 98 99 100
  • b=AS:37
  • b=RS:0
  • b=RR:2000

Attributes for media:

  • a=rtpmap:97 AMR-WB/16000/1
  • a=fmtp:97 mode-change-capability=2; max-red=220
  • a=rtpmap: 98 telephone-event/16000
  • a=fmtp: 98 0-15
  • a=rtpmap:99 AMR/8000/1
  • a=fmtp:99 mode-change-capability=2; max-red=220
  • a=rtpmap: 100 telephone-event/8000
  • a=fmtp: 100 0-15
  • a=ptime:20
  • a=maxptime:240

Attributes for preconditions:

  • a=curr:qos local none
  • a=curr:qos remote none
  • a=des:qos mandatory local sendrecv
  • a=des:qos optional remote sendrecv

183 Session Progress (Step 4)

Use the default message "183 Session Progress" in annex A.2.3 with the following exceptions:

Header/param

Value/remark

Status-Line

Reason-Phrase

Not checked

Require

option-tag

precondition

Message-body

The following SDP types and values shall be present.

Session description:

  • v=0
  • o=(user-name) (sess-id) (sess-version) IN (addrtype) (unicast-address for UE)
  • s=(session name)
  • c=IN (addrtype) (connection-address for UE) [Note 1]
  • b=AS: (bandwidth-value)

Time description:

  • t=0 0

Media description:

  • m=audio (transport port) RTP/AVP (fmt) [Note 3]
  • c=IN (addrtype) (connection-address for UE) [Note 1]
  • b=AS: (bandwidth-value)
  • b=RS: (bandwidth-value)
  • b=RR: (bandwidth-value)

Attributes for media:

  • a=rtpmap:(payload type) AMR-WB/16000 [Note 3]
  • a=fmtp:(format) [Note 3, 4]

Attributes for preconditions:

  • a=curr:qos local none or a=curr:qos local sendrecv
  • a=curr:qos remote none
  • a=des:qos mandatory local sendrecv
  • a=des:qos mandatory remote sendrecv
  • a=conf:qos remote sendrecv

Note 1: At least one "c=" field shall be present.

Note 2: Void

Note 3: The value for fmt, payload type and format is not checked

Note 4: Parameters for the AMR codec are not checked

UPDATE (step 7)

Use the default message "UPDATE" in annex A.2.5 with the following exceptions:

Header/param

Value/remark

Require

option-tag

precondition

Message-body

The following SDP types and values.

Session description:

  • v=0
  • o=- 1111111111 1111111112 IN (addrtype) (unicast-address for SS)
  • s=-
  • c=IN (addrtype) (connection-address for SS)
  • b=AS:37

Time description:

  • t=0 0

Media description:

  • m=audio (transport port) RTP/AVP 97
  • b=AS:37
  • b=RS:0
  • b=RR:2000

Attributes for media:

  • a=rtpmap:97 AMR-WB/16000/1
  • a=fmtp:97 mode-change-capability=2; max-red=220
  • a=ptime:20
  • a=maxptime:240

Attributes for preconditions:

  • a=curr:qos local sendrecv
  • a=curr:qos remote none or curr:qos remote sendrecv [Note 1]
  • a=des:qos mandatory local sendrecv
  • a=des:qos mandatory remote sendrecv

Note 1: Use the value (none/sendrecv) received from 183 Session Progress and attribute a=curr:qos local.

200 OK (step 8)

Use the default message "200 OK for other requests than REGISTER or SUBSCRIBE" in annex A.3.1 with the following exceptions:

Header/param

Value/remark

Require

option-tag

precondition

Content-Type

media-type

application/sdp

Content-Length

header shall be present if UE uses TCP to send this message and if there is a message body

value

length of message-body

Message-body

The following SDP types and values shall be present.

Session description:

  • v=0
  • o=(user-name) (sess-id) (sess-version) IN (addrtype) (unicast-address for UE) [Note 4]
  • s=(session name)
  • c=IN (addrtype) (connection-address for UE) [Note 1]
  • b=AS: (bandwidth-value)

Time description:

  • t=0 0

Media description:

  • m=audio (transport port) RTP/AVP (fmt) [Note 2]
  • c=IN (addrtype) (connection-address for UE) [Note 1]
  • b=AS: (bandwidth-value)
  • b=RS: (bandwidth-value)
  • b=RR: (bandwidth-value)

Attributes for media:

  • a=rtpmap:(payload type) AMR-WB/16000 [Note 2]
  • a=fmtp:(format) [Note 2, 3]

Attributes for preconditions:

  • a=curr:qos local sendrecv
  • a=curr:qos remote sendrecv
  • a=des:qos mandatory local sendrecv
  • a=des:qos mandatory remote sendrecv

Note 1: At least one "c=" field shall be present.

Note 2: The value for fmt, payload type and format is not checked

Note 3: Parameters for the AMR codec are not checked

Note 4: "o=" line identical to previous SDP sent by UE except that sess-version is incremented by one.

180 Ringing (Step 9)

Use the default message “180 Ringing for INVITE” in annex A.2.6 with the following exceptions:

Header/param

Value/remark

Content-Type

Header not present

media-type

Content-Length

header shall be present if UE uses TCP to send this message and if there is a message body

value

0

Message-body

Not present