Proxy-call session control function (P-CSCF) to P-CSCF communication

A first proxy-call session control function (P-CSCF) node, the first P-CSCF node comprising processing circuitry, the processing circuitry configured to cause the first P-CSCF node to:

• receive, via a first user plane associated to an IMS PDU session for a user equipment (UE), a session initiation protocol (SIP) INVITE message;
• and
• as a result of the SIP INVITE message and based on a location of the UE relative to a first access gateway (AGW), associated to the first P-CSCF node, determine whether or not to initiate use of at least one of an additional second user plane and an additional second AGW for the IMS PDU session for the UE,
• wherein determining whether or not to initiate the use of the at least one of the additional second user plane and the additional second AGW for the IMS PDU session comprises:
• determining, based at least in part on a media type indicated in session information of the IMS PDU session, whether or not to initiate use of a local application server, AS, for the IMS PDU session for the UE, and
• wherein the at least one of the second user plane and the second AGW being is closer to the UE than the first user plane.