CUBE at ip:10.251.223.18
CUCM at ip: 10.231.184.38
A SIP trunk between them.
CUCM has received an INVITE from CUBE for phone number 511 and responds with 404 Not Found.
The QUESTION is: Why do we see the address of CUBE in VIA header?
This message is actually sent from CUCM, so its address has to be there.
Is that bug or is that implemented so by design? What is the reason for that?
Note that this is the call leg to CUCM, not the opposite call leg to SP, where CUBE is going to re-originate this message.
Here is what debug ccsip messages on CUBE shows:
Received:
SIP/2.0 404 Not Found
Via: SIP/2.0/UDP 10.251.223.18:5060;branch=z9hG4bK911316
From: <sip:00882208327@10.251.223.18>;tag=41235840-151A
To: <sip:511@10.231.184.38>;tag=4738709~23f88673-e727-4bb5-8d43-4b6fc7db659a-35724426
Date: Tue, 11 Dec 2012 17:01:48 GMT
Call-ID:
491A5B19-42EB11E2-8156F11F-C6A5C5D4@10.251.223.18
CSeq: 101 INVITE
Allow-Events: presence
Reason: Q.850;cause=1
Content-Length: 0 Received:
SIP/2.0 404 Not Found
Via: SIP/2.0/UDP 10.251.223.18:5060;branch=z9hG4bK911316
From: <sip:00882208327@10.251.223.18>;tag=41235840-151A
To: <sip:511@10.231.184.38>;tag=4738709~23f88673-e727-4bb5-8d43-4b6fc7db659a-35724426
Date: Tue, 11 Dec 2012 17:01:48 GMT
Call-ID: 491A5B19-42EB11E2-8156F11F-C6A5C5D4@10.251.223.18
CSeq: 101 INVITE
Allow-Events: presence
Reason: Q.850;cause=1
Content-Length: 0
