C.17 PDP context activation – UMTS

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

The procedure is applicable for a UE with UTRA support (TS 34.229-2 A.18/2) only.

The generic test procedure:

1 The UE sends an Activate PDP Context Request message. In the Protocol Configuration Options IE the IM CN Subsystem Signalling Flag may be set or not set, a request for P-CSCF Address or a request for DNS Server Address may be included or not.

2 The SS responds with an Activate PDP Context Accept message. In the Protocol Configuration Options IE the IM CN Subsystem Signalling Flag shall not be set, a list of P-CSCF addresses or DNS Server addresses shall only be included if a corresponding request was included in step 1.

NOTE: The required radio bearer(s) are established. For UMTS FDD they are established using RADIO BEARER SETUP (according to 3GPP TS 25.331 [58]).

Expected sequence

Step	Direction		Message	Comment
	UE	SS
1	🡪		Activate PDP Context Request	In the Protocol Configuration Options IE the IM CN Subsystem Signalling Flag may be set or not set, a request for P-CSCF Address or a request for DNS Server Address may be included or not.
2	🡨		Activate PDP Context Accept	In the Protocol Configuration Options IE the IM CN Subsystem Signalling Flag shall not be set, a list of P-CSCF IP addresses or DNS Server addresses shall only be included if a corresponding request was included in step 1.

NOTE: The default message contents in annex A are used with condition “IMS AKA security “ or “GIBA” when applicable.