C.33 Generic test procedure for MT release of IMS 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

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

The generic test procedure:

1) SS sends BYE to the UE.

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

3)-4) Deactivation of a dedicated EPS Bearer during call establishment.

Steps 3 and 4 are applicable for a UE with E-UTRA support (TS 34.229-2 A.18/1) only.

Expected sequence

Step	Direction		Message/Procedure	Comment
	UE	SS
1	🡨		BYE	The SS sends BYE to release the call.
2	🡪		200 OK	The UE sends 200 OK for the BYE request and ends the call.
3-4				EPS Bearer Deactivation procedure according TS 36.508 [94] subclause 4.5A.15.

Specific message contents