Aleksander Morgado wrote: > Hi there, > > My proxy is forwarding a SIP MESSAGE to the end user, which has the > following contents: > > MESSAGE sip:[email protected] SIP/2.0 > Via: SIP/2.0/UDP 192.168.100.94;branch=z9hG4bK.9Uv96pr9jv6j852j3HD2aSSUFe > Via: SIP/2.0/UDP 88.30.142.86;branch=z9hG4bKpl9r8q > Max-Forwards: 70 > From: Shell <sip:[email protected]>;tag=bq0lfn > To: <sip:[email protected]>;tag=bq0lfn > Call-ID: [email protected] > CSeq: 109629559 MESSAGE > Supported: sec-agree > Content-Length: 0 > P-Preferred-Identity: Shell <sip:[email protected]> > > And the UAC is replying with error code 481: > > Is that somehow possible? a SIP MESSAGE may be sent out of any SIP > session, so why is the UAC checking for that specific Call-ID and > rejecting the SIP MESSAGE? >
Your initial MESSAGE has a to-tag, which seems wrong for an out-of-dialog request. This is probably confusing your UAS by making it look for the dialog it corresponds to. Since it can't find it, the request is rejected with 481. Michael _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
