Does pjsip support?????? its next gen IMS! AKA uses the IMS Gm interface (SIP protocol) for communication between a UE and a P-CSCF. Both sides have a Client port and a Server port. Session registrations are performed with the SIP REGISTER request message. The UE starts the AKA session registration on an unprotected channel between the UE and the P-CSCF. The AKA session registration establishes two IPsec protected channels between the UE and the P-CSCF. IPsec channels for IMS AKA protected traffic (UDP or TCP) The Security-Client, Security-Server, and Security-Verify headers are used to establish protected port pairs between UE and P-CSCF. The information about port numbers etc. on the UE side is passed to the P-CSCF side in the Security-Client header. The information about port numbers etc. on the P-CSCF side is passed to the UE side in the Security-Server header. -----Original Message----- From: pjsip-bounces@xxxxxxxxxxxxxxx [mailto:pjsip-bounces at lists.pjsip.org] On Behalf Of pjsip-request at lists.pjsip.org Sent: Wednesday, November 02, 2011 11:00 AM To: pjsip at lists.pjsip.org Subject: pjsip Digest, Vol 51, Issue 4 Send pjsip mailing list submissions to pjsip at lists.pjsip.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org or, via email, send a message with subject or body 'help' to pjsip-request at lists.pjsip.org You can reach the person managing the list at pjsip-owner at lists.pjsip.org When replying, please edit your Subject line so it is more specific than "Re: Contents of pjsip digest..."