[asterisk-users] compatibility of PRI Two B channel transfers TBTC/2BTC

[Steve Totaro]

Matt Florell wrote:
> Hello,
>
> A client has asked for Two B channel Transfer capability (known as
> TBCT or 2BCT, similar to other features such as ECT, RTL and Q,SIG
> Path Replacement) in a new Asterisk system and so I researched the
> capability and came up with quite a few gaps in documentation.
>
> >From what I've gathered, the official Digium statement is that is
> works with DMS100 only, and only in Asterisk 1.4.X :
> http://kb.digium.com/entry/26/140/
>
> Although in a bugtracker posting with a patch from over two years ago,
> Matt Fredrickson from Digium says that it works with 5ESS under
> Asterisk 1.2.X:
> http://bugs.digium.com/view.php?id=3554
>
> There are also bounties and claims of this feature working on NI2
> protocol(although no patches posted) on the voip-info.org Wiki:
> http://www.voip-info.org/wiki/view/Asterisk+bounty+PRI+2B+channel+transfer+for+NI2+PRI+line
> http://www.voip-info.org/wiki/index.php?page=Asterisk%20bounty%20PRI%202B%20channel%20transfer
>
> As for actually using this feature, you apparently need to add the
> following lines to the zapata.conf section that you want to be able to
> use 2BCT:
> facilityenable = yes
> transfer=yes
>
> To execute the transfer, you need to use the "Transfer" cmd within Asterisk:
> http://voipinfo.org/wiki/view/Asterisk+cmd+Transfer
>
> And according to this post, you can only do 2BCT transfers if the
> first call is inbound:
> http://www.mail-archive.com/asterisk-dev@lists.digium.com/msg25131.html
>
>
> Does 2BCT work with DMS100 and 5ESS right now?
>
> Are there people using this in production right now that can shed some
> more light on exactly how they are using it, and executing the
> transfers?
>
> Any input would be greatly appreciated.
>
> Thanks,
>
> MATT---
>
>
>   

Sounds like the early days of Asterisk. 

Do us all a favor, after you have tried everything, pulled out your 
hair, banged your head, had a breakthrough and solved the issue (jumping 
up and down excitedly saying "YES, YES YES", post your experience to the 
wiki, and or reply to this thread.

Thanks,
Steve