El Wednesday 11 June 2008 11:20:12 Michael Hirschbichler escribió: > Hi all, > > I have the following problem: > > we use a SIP-client, which does instead of re-registrations a > de-registration and directly following a registration, i.e. > > UA Proxy > ---- REGISTER ---> > (Expires: 0) > <--- 200 OK ------- > ---- REGISTER ---> > (Expires 3600) > <- 401 Unauthorized- > ---- REGISTER ---> > (Expires 3600) > <--- 200 OK ------ > (Expires 120) > (the call-id remains the same, the To:-tag is changing) > > When this UA has an active voice-call running during this de- and > -registration procedure, what should be the correct behavior? > > Should the call be terminated by the Proxy just after the De-registration > (all requests and media are using the SIP- and Media-Proxy)?
Not at all. Registration and media sessions are completely independent processes. A UAC doesn't need to be registered in order to make a call. Some PBX's only allow calls from phones if they are registered, but it's a private policy, not RFC at all. Imagine a user than only wants to make calls but no receive them. He could set DND or he could just de-register. > Are there any standards, where I can find information about the correct > behavior? In RFC3261, I did not find any information about this problem The correct behaviour (RFC 3261) is that registration and calls don't depend one on the other at all. Regards. -- Iñaki Baz Castillo [EMAIL PROTECTED] _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
