Stephan Steiner ha scritto:
Actually this proxy/registrar (the Linksys SPA9000), does things in a rather
interesting way:
Here's how the UA registers:
REGISTER sip:192.168.1.4:6060 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.143:1027;branch=z9hG4bK-15jt0sfyr8xy;rport
From: Stephan Snom sip:[EMAIL
Hi,
What is the reason for including ACK in an INVITE transaction for a
non-2xx response and making it a separate transaction for a 2xx
response?
Is there any specific reason from the design perspective?
Thanks,
Hema.
An error response to an INVITE terminates a transaction. The error MAY
occur before the INVITE reaches the actual destination. Example is a
404 generated by a proxy because it cannot route the INVITE to an actual
UA. A 200 Ok for an INVITE, however, can only be generated by the
