[OpenSIPS-Users] Trunking Calls Onward

[Andreas Sikkema]

On May 1, 2010, at 9:05 AM, Adrian Georgescu wrote:

> On Sat, 2010-05-01 at 16:28 +0930, Mike O'Connor wrote:
>> I have a need to forward calls onward for a range of DID's, but the
>> other end is not going to Register. I think this is called trunking.
>> 
>> I need to be able to configure the DID's and the ip/port there being on
>> forwarded too.
>> What methods should I use to do this ?

> You could use ENUM to translate SIP URIs to a particular outside peer
> and use trusted peers table to match incoming calls.
> 
> Then you only need to add ENUM numbers in your DNS database and trusted
> peers in your proxy database, no need to configure much in OpenSIPS
> beside doing ENUM lookup and checking the trusted table.

Using ENUM and Trusted Peers as Adrian sugests is definitely the easiest way to create a trunk but I have run into one minor problem, it will only work if the destination of the ENUM mapping is listening on port 5060. I haven't been able to find a way to make custom ports work, but that might be something to do with myself  ;-)

Current meaning of trunking appears to be more than 1 simultaneous call to/from one single destination, I've seen hard/software require authentication and other hard/software absolutely refuse to do authentication wrt trunking and everything in between.

-- 
Andreas