L.3 Mobility related concepts when using 3GPP2 Packet Data Subsystem

23.2283GPPIP Multimedia Subsystem (IMS)Release 18Stage 2TS

L.3.1 General

The Mobility related procedures for 3GPP2 systems are described in 3GPP2 X.S0011 [60] and the IP address management principles are described in 3GPP2 X.S0011 [60]. As specified by these procedures, the UE acquires the necessary IP address(es) to access IM CN system.

The restriction on using a single IP address for IMS Local Breakout functionality as defined in clause 5.1.0 does not apply to 3GPP2 based systems.

L.3.2 Procedures for P‑CSCF discovery

This clause describes the P‑CSCF discovery procedures applicable for 3GPP2 systems. These procedures follow the generic mechanisms described in clause 5.1.1 with the following exception:

– Discovery of P‑CSCF as part of establishment of connectivity towards the 3GPP2 IP‑CAN is not supported.