It is referring to the entire From header, including the tag. The only difference in the request should be the CSeq (increased by 1), and the addition of credentials (WWW-Authenticate or Proxy-Authenticate).
cheers, (-:bob Robert F. Penfield Chief Software Architect Acme Packet, Inc. 71 Third Avenue Burlington, MA 01803 [EMAIL PROTECTED] ----- Original Message ----- From: "Szilagyi, Mike" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Thursday, May 18, 2006 7:11 PM Subject: [Sip-implementors] From-tag on Registration attempt > When a UAS or proxy challenges a REGISTER request, should the UAC use > the From-tag from the original request in the second REGISTER attempt. > > RFC3261 says it should have the same From header but does not explicitly > mention the tag value. > > Regards. > _______________________________________________ > 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
