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T23G and T48G Fails to include transport=tcp in contact header
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JMComstock Offline
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Posts: 12
Joined: Jan 2015
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Post: #1
T23G and T48G Fails to include transport=tcp in contact header

I'm having trouble with the new T23G phones. I'm using firmware version
The same issue is happening on T48G phones when I upgrade to firmware

I am also using NAPTR. The NAPTR resolves correctly to TCP with the correct ip and port.

When the phone registers it correctly uses a TCP port but fails to include the requisite:
"transport=tcp" in the contact header.

This cause the registration server heartburn because the connection is coming in on a TCP port but it is not specified in the header.

Here is an example from a T48G

REGISTER sip:p92dk.voiceelements.com SIP/2.0
Via: SIP/2.0/TCP;rport;branch=z9hG4bK1589095695
From: "Reception" <sip:101@p92dk.voiceelements.com>;tag=264156176
To: "Reception" <sip:101@p92dk.voiceelements.com>
Contact: <sip:101@>
Content-Length: 0

When I return to firmware, it all works correctly.

REGISTER sip:p92dk.voiceelements.com SIP/2.0
Via: SIP/2.0/TCP;rport;branch=z9hG4bK1884761878
From: "Reception" <sip:101@p92dk.voiceelements.com>;tag=2821122686
To: "Reception" <sip:101@p92dk.voiceelements.com>
Contact: <sip:101@;transport=TCP>
Content-Length: 0

Here is an example from a T23G with the incorrect header.

REGISTER sip:p92dk.voiceelements.com SIP/2.0
Via: SIP/2.0/TCP;rport;branch=z9hG4bK90124193
From: "Office" <sip:104@p92dk.voiceelements.com>;tag=2313422629
To: "Office" <sip:104@p92dk.voiceelements.com>
Contact: <sip:104@>
Content-Length: 0

Problem is that I just bought a bunch of T23Gs because of discontinuing the T22P, so I am in a bind! There is no earlier firmware version to fall back on.

Please Help!!!
08-27-2015 05:54 AM
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T23G and T48G Fails to include transport=tcp in contact header - JMComstock - 08-27-2015 05:54 AM

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