5 Reference Conditions

34.229-53GPPInternet Protocol (IP) multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP)Part 5: Protocol conformance specification using 5G System (5GS)Release 16TSUser Equipment (UE) conformance specification

5.1 General

The test cases are expected to be executed through the 3GPP radio interface. Details of the radio interfaces are outside the scope of this specification. The reference environments used by tests are specified in the test.

5.2 Generic setup procedures

A set of basic generic procedures for different IMS usage scenarios are described in Annex A of this specification. These procedures are used in numerous test cases throughout the present document. Default Messages are used from and maintained in Annex A of TS 34.229-1 [2].

5.3 Transport protocols applied

For simplicity, UDP (User Datagram Protocol) is applied to IMS testing as default DL transport protocol, except for the test cases in clause 6 where TCP (Transmission Control Protocol) is applied as DL transport protocol.

NOTE: Which UL transport protocol is used in the test is decided by the UE.