P-Asserted is used in 3GPP and actually identifies the user for services and billing.
It's equivalent to Calling Party Screening in the Traditional ISUP/PRI world. Your example below is valid can be used. From is only the display part for the other user. You can use either one of the two public identities (UACA, UACB or something else) for the From address. Just make sure that the public identity that services are invoked (Prepaid, Billing etc) is the P-Asserted-Identity. Thanks Dutt Dutt Kalapatapu User Services Core | tel:+14082183088 | sip:[EMAIL PROTECTED] -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Moore, Steve Sent: Thursday, November 08, 2007 6:02 AM To: [email protected] Subject: [Sip-implementors] Basic P-Asserted-Identity Question Hello Everyone, Please forgive me if this question has been asked before. After reading RFC 3325, my understanding of the P-Asserted-Identity and >From headers is the UAC should put the user's real identity in the P-Asserted-Identity header and what the user wishes to appear in the >From header. I believe this is shown by the example in Section 10.1: * F4 proxy.cisco.com -> proxy.pstn.net (trusted) INVITE sip:[EMAIL PROTECTED] SIP/2.0 Via: SIP/2.0/TCP useragent.cisco.com;branch=z9hG4bK-124 Via: SIP/2.0/TCP proxy.cisco.com;branch=z9hG4bK-abc To: <sip:[EMAIL PROTECTED]> From: "Anonymous" <sip:[EMAIL PROTECTED]>;tag=9802748 Call-ID: 245780247857024504 CSeq: 2 INVITE Max-Forwards: 69 P-Asserted-Identity: "Cullen Jennings" <sip:[EMAIL PROTECTED]> P-Asserted-Identity: tel:+14085264000 Privacy: id Is this understanding correct? Now imagine a user has two UACs registered in the system, UACA and UACB. Each UAC has a different display name and AOR, "Steve UACA" <sip:[EMAIL PROTECTED]> and "Steve UACB" <sip:[EMAIL PROTECTED]>. The user makes a call from UACB, but wants it to appear as if it is coming from UACA. What should be in the P-Asserted-Identity and From headers? Should it be: INVITE sip:[EMAIL PROTECTED] SIP/2.0 To: <sip:[EMAIL PROTECTED]> From: "Steve UACA" <sip:[EMAIL PROTECTED]>;tag=9802748 P-Asserted-Identity: "Steve UACB" <sip:[EMAIL PROTECTED]> Thanks in advance for any advice. Steve _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
