[asterisk-dev] Can asterisk PRI/BRI support redirect calls

[Olle E. Johansson]

20 nov 2009 kl. 15.16 skrev Jared Smith:

> On Fri, 2009-11-20 at 19:06 +1300, Alec Davis wrote:
>> Whats available in asterisk for 2BCT or ECT?
> 
> Modern versions of Asterisk and LibPRI support 2BCT (Two B Channel
> Transfer) or RLT (Release Line Trunk, the Nortel proprietary version of
> 2BCT) on most (if not all) switch types.  I've successfully used it a
> number of times.  The keys to making it work are:
> 
> A) Make sure you have "facilityenable=yes" and "transfer=yes" defined in
> the [channels] section of chan_dahdi.conf, above the definition of your
> PRI channels.
> 
> B) Make sure the telco has enabled 2BCT or RLT on your trunk groups.
> This is often the most difficult part of the process, as the telco may
> either try to charge for this feature, or claim they have it enabled
> when they don't.

One important part of having this enabled in the telco switch is that you can forward the caller ID of the forwarding call in most cases, as the call doesn't go outside of the telco's infrastructure. If the call has to go into your system and then be "tromboned" out as a call forward, most telco's will replace the caller ID with the default caller ID for your outbound trunk.

Thanks Jared for the information - I do need this soon.

Have a nice developer weekend, folks!

/O