A.12 IMS Re-Registration / 5GS

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

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

The generic test procedure for IMS re-registration

Expected sequence

Step	Direction		Message	Comment
	UE	SS
1	🡪		REGISTER	The UE sends a re-registration request.
2	🡨		200 OK	The SS responds with 200 OK.

Use the default message “REGISTER” in Annex A.1.1 of TS 34.229-1 [2] with conditions A2 and A32.