[OpenSIPS-Users] How to implement a SIP Trunk in between two SIP servers.

Bogdan-Andrei Iancu bogdan at voice-system.ro
Thu Jan 6 12:31:27 CET 2011

Hi Steven,

If you use the opensips default script, your opensips will accept calls 
from any other external SIP entities (call targeting a local opensips 

If you want to configure your opensips to accept foreign calls only form 
a specific IP address, you can use the permission module, with address 
table to implement IP-based authentication.

Best regards,

steven chew wrote:
> Hi everyone,
> I am a newbie with SIP-Trunk in OpenSips. 
> I have a Cisco Communication Unified Manager and a OpenSips Server 
> running in two different Virtual Machines.
> I would like to have a SIP trunk in between them "Cisco Communication 
> Unified Manager and OpenSips Server". 
> Therefore, I can make a call from OpenSips Server's SIP Clients to 
> Cisco IP Phone. 
> What should I need to add into opensips.cfg configuration file?
> I hope you can give some simple examples how to do it. 
> I look forward to hearing from your advise asap.
> Thanks
> Regards,
> -Steven.
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Bogdan-Andrei Iancu
OpenSIPS Event - expo, conf, social, bootcamp
2 - 4 February 2011, ITExpo, Miami,  USA

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