Tandberg E20

Unanswered Question
Feb 18th, 2010


I have configured a Tandberg E20 on CM 6.1.3.

The  tandberg registers and all IP phones can call tandberg E20, but the tandberg can call nothing.

The partitions and calling search spaces are OK. The same SIP config works for a X-lite softphone.

Any has experience with these Tandberg E20 devices?



I have this problem too.
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shrutid22 Mon, 02/22/2010 - 18:11

Hi Jan

Not sure how you registered this as a SIP device or Tandberg Endpoint?

I had same situation when I registered it as SIP endpoint, but if you register as a SCCP Tandbern endpoint, you will not have problems.

To achieve this, apply a patch available here


and then try, Let me know if it helps



Eldho E Kuriakose Tue, 02/23/2010 - 05:37

I registered tandberg device as an h.323 client and can able to make and receive calls from tandberg.

cornel.chirculete Tue, 02/23/2010 - 07:00

E20 is a SIP only endpoint. So yes, it's not working well with CM 6.1 . I have upgraded to the latest software version, and now is not registering anymore. So....it's better and better.

Anybody....any luck with this one?



j.huizinga Tue, 02/23/2010 - 08:29


Thanks for the info.

Finaly it registered as a SIP endpoint after filling in the full URI

It works now including video talks with Cisco CUVA

Sometimes it seems that the E20 doesn't answer a call, but after the second or third call or after a reset from callmanager.

Don't know why this is though. It happens after a long time of inactivity,




cornel.chirculete Wed, 02/24/2010 - 03:50


Can you give me a sample config from E20? What software version are you using?

Thank you,


ryan_oconnell Wed, 04/14/2010 - 06:23

Hi Cornel,

If you have a snapshot or a summary to share on how you configured the e20 on  CUCM as a sip endpoint that would be helpful

Cheers Ryan

Utair Corporation Wed, 12/15/2010 - 01:28

cornel.chirculete wrote:

You must have URI like [email protected] IP ADDRESS. You can register and make two way calls.

It does not work with TE2.2.0. E20 just complains

about no proxy configured, if you leave Proxy->Address blank and Automatic or Manual

UPDATE: my bad, i had trunk with same IP, as E20. Removed trunk, now E20 registers ok with [email protected]_IP in URI setting and CM_IP in proxy setting.

There is another problem now - E20 gets "Session timer too small" and ACKnoledges and reINVITEs only 10 seconds later, grrrr

any way to set session timer smaller, just for E20?


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