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SIP Header Question


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Hi There,


I've set up Snom One (2011- Coma Berenicids on MacOS) to work with Junction Networks service which is called "PSTN Gateway". I can call into the system and dial an extension and have clear conversations. I can call between LAN extensions and have clear conversations.


I cannot however seem to dial out. I get an immediate fast busy on the extension (A Snom 821) and it says "Not Found" and the number I dialed. My provider says that in the "from" header below they need to be seeing <sip: 104@ourusername.onsip.com> as opposed to our IPPBX's local IP address.

I've tried everything with the IP Replacement and Routing section but maybe I should be using custom headers to force this?


Any help would be greatly appreciated. The following is part of the SIP Trace from the phone itself. Thanks!


Received from udp: at 5/2/2013 17:10:06:509 (529 bytes):


SIP/2.0 404 Not Found

Via: SIP/2.0/UDP;branch=z9hG4bK-6eejbkpmz9tf;rport=3072

From: "Keith Junction" <sip:104@>;tag=nkzs623qf1

To: <sip:12065265178@;user=phone>;tag=8eea6f9129

Call-ID: 2f73263cec27-m6y2g2xcx56a


Contact: <sip:104@>

Supported: 100rel, replaces, norefersub

Allow-Events: refer


Accept: application/sdp

User-Agent: snomONE/ Coma Berenicids

Content-Length: 0

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  • 1 month later...

Hi Keith,


what did you set up as your outgoing ANI on your trunk? What do you have under Remote Party/Privacy Indication on that trunk and finally check what do you have under "Rewrite Global Numbers". Most likely your provider requires outgoing caller ID set up properly which you may not be sending.

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