C.35 Generic test procedure for removal of early dialog of incoming call after successful aSRVCC handover – 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

Test procedure:

1) SS sends CANCEL to the UE

2) SS waits for UE to send 200 OK

3) SS waits for UE to send 487 Request terminated

4) SS responds with ACK to the UE

Expected sequence:

Step	Direction		Message	Comment
	UE	SS
1	🡨		CANCEL	SS sends CANCEL
2	🡪		200 OK	UE sends 200 OK.
3	🡪		487 Request Terminated	UE sends 487 Request Terminated
4	🡨		ACK	SS sends ACK

ACK (step 2)

Use the default message " ACK” in annex A.2.6 with condition A4.