[Spce-user] SIP ACK with changed Contact Header

Marc Storck mstorck at voipgate.com
Wed Feb 4 09:36:24 EST 2015


Hello,

can anybody point me to the RFC that requires the SIP ACK to contain the identical Contact Header from the SIP 200 OK.

(SPCE ignores the SIP ACK and drops the call after 32 seconds, if contact header in SIP ACK differs from the one in SIP 200 OK).

Thanks for the help.

Regards,

Marc
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