CTMS SIP Logs "SIP/2.0 500 Internal Server Error"

Unanswered Question
Sep 15th, 2010

Hi TelePresence Guru's

I have noticed the following in the SIP logs of my Cisco TelePresence Multipoint Switch (CTMS) :

SIP/2.0 500 Internal Server Error
Via: SIP/2.0/UDP;branch=z9hG4bK2b0f766df9be6
From: <sip:[email protected]>;tag=988fbe52-93f3-4aa8-a0cf-cb798ce197d5-42282222
To: <sip:[email protected]>;tag=001e0bcca50c05dc5d856652-1d48c79a
[email protected]
Date: Mon, 13 Sep 2010 13:03:17 GMT
Content-Length: 0

As it stands I have not noticed any adverse effect.  Has anyone noticed these in their SIP logs?  Obviously it would be nice to know what 'Internal Server Error' means in this case and whether I should be concerned.

Thanks for reading.


I have this problem too.
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gogasca Sun, 09/19/2010 - 02:00
That seems to be coming from a SUBSCRIBE message perhaps coming from KPML/DTMF support,
if no error, its ok,
CTS endpoints and CTMS do not support sending/passing DTMF.  As we
implement more interoperability solutions, we will add it to future roadmap discussions



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