[SIPForum-discussion] contact / Via header NULL

fråmedrëlay framedrelay at yahoo.com
Tue May 20 11:22:11 UTC 2008

Hi All,

I get a call from CA, however I do not see contact header and Via header, it has NULL Values. Could someone confirm two things.
1. Why the value is set to NULL (as per the CA guys, its for security issue).
2. its working as of now, however I see BYE getting timeout. I get a parameter above the Invite which says SOURCE = "CALL AGENT IP ADDRESS"; So when we sent 100 trying and 200/180/183 etc, we send it to call agent IP. I see a problem with BYE getting timeout. Can someone confirm If this is Ok?

INVITE sip:6600666 at;user=phone SIP/2.0
Via: SIP/2.0/UDP NULL:5060 ;branch=z9hG4bKterm-123-12341234-6600666-854
From: 6688 <sip:6688 at NULL;user=phone>;tag=1610898989
To: 6600666 <sip:6600666 at;user=phone>
Call-ID: 622a1591-64aab81c-6dceef94-2f7 at pgw
Supported: timer
Session-Expires: 1800
Min-SE: 1800
Contact:  <sip:6666 at NULL:5060>
Max-Forwards: 70
Content-Length: 0

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