CS1000 SIP Trunks

[one234]

Hello All,

I've setup a SIP trunk to an external Telco. I'm able to make and receive calls. The system is a release 5.0 with the latest deplist and MPLR22452. I’ve tried it on a HP SS and on a dedicated CPPM SIP SS.

The problems start when the Nortel user wants to use a feature that puts the external caller on hold. I.e. transfer or conference.

When the external call is placed on hold (By pressing hold/trans/whatever) the CS1000 sends a new SIP invite that tells the Telco they needs to connect to IP address 0.0.0.0 (On hold invite)

The Telco accepts the invite (Trying, OK). When the Nortel user "unholds" the call the Telco keeps sending new invites for the media path to the Nortel set. After a while the Nortel set crashes (Invite storm) and the call is disconnected.

In the trace it looks like the Telco is the problem, because it keeps sending invites, but they want us to turn of the hold feature. So we are not allowed to send a hold invite to the Telco...

Does somebody know how we can disable this? As far as I know we are not able to enable/disable SIP features...

Thanks in advance.


Marc D.

If Bill Gates had a nickel for every time Windows crashed... Oh wait, he does...

 

[Reusser]

Sounds like a problem for a patch. Assuming your phones are registared to the PBX, hold should be internal and not sent to trunks.

 

[smokeyvols]

I wish I could help but you may be able to help me if possible. I need to program a SIP trunk and was wondering what the configuration was. Can you help on this?

 

[ktse1210]

The easiest way to do this is via EM. First of all, ensure you have SIP Access Ports licences installed. Use your CLI and check via LD 22's SLT.
After that, create your D-Channel for your SIP Virtual Trunks (under Routes and Trunks in EM).
Then, create your SIP Route and finally add in your SIP Trunks (under Routes and Trunks in EM).
Hope the above helps.

 

[1998xj8]

BULLETIN ID: 2008009017, Rev 1
PUBLISHED: 2008-08-20
It may help...I have it if you want me to paste whole thing