7 RTP Payload Format Conformance for AMR-WB

26.1303GPPRelease 18Speech/Audio Codec RTP Payload Format Conformance for UE TestingTS

7.1 Applicability

[The requirements and test methods in this clause shall apply when UE is used to provide wideband telephony, either as a stand-alone service, or as part of a multimedia service.]

7.2 [Test cases in sending]

7.2.1 [Q-bit verification]

7.2.1.1 [Requirement]

[The Q-bit shall always bit set to 1 in the RTP payload.

NOTE: The Q-bit is the frame quality indicator [RFC 4867]. If set to 0, it indicates that the corresponding frame is severely damaged, and the receiver should set the RX_TYPE to either SPEECH_BAD or SID_BAD depending on the frame type (FT).]

7.2.1.2 [Test method]

[Editor’s note: test setup to be fully defined first, the principle of the test method could be to setup MT call(s) with AMR-WB at predefined modes and analyse captured PCAP files at the IP level. ]

7.2.2 [Handling of CMR (open offer)]

7.2.2.1 [Requirement]

[The AMR-WB bit rate (mode) in sending shall be according to the CMR inserted in receiving after [X] ms.]

7.2.2.2 [Test method]

[Editor’s note: test setup to be fully defined first, the principle of the test method could be to setup MT call(s) with AMR-WB at predefined modes and analyse captured PCAP files at the IP level. ]

7.2.3 [Handling of CMR (restricted offer)]

7.2.3.1 [Requirement]

[The AMR-WB bit rate (mode) in sending shall be according to the CMR inserted in receiving after [X] ms when this CMR is within the negotiated codec set.

A CMR outside the negotiated codec set shall be ignored, i.e. the AMR-WB bit rate (mode) in sending shall not be changed after receiving a CMR outside the restricted offer and inserted in receiving.]

7.2.3.2 [Test method]

[Editor’s note: test setup to be fully defined first, the principle of the test method could be to setup MT call(s) with AMR-WB at predefined modes and analyse captured PCAP files at the IP level. ]

7.2.4 [RTCP bandwidth verification]

[Editor’s note: one option could be to refer to TS 26.139 and require that UE comply with this specification.

7.2.4.1 [Requirement]

[RTCP conformance is defined in 3GPP TS 26.139.

Requirement to be defined]

7.2.4.2 [Test method]

[Editor’s note: test setup to be fully defined first, the principle of the test method could be to setup MT call(s) with AMR-WB at predefined modes and analyse captured PCAP files at the IP level. ]

7.3 [Test cases in receiving]

tbd