I talked to Sangoma about this several months ago. They said it was
on their road map, but, not at the top. This is a sweet feature to
have available on a PRI. We wrote code to do this on a Dialogic
system several years ago, still works great. It was not too
difficult to do. You need the Call Reference Value of the two
calls, then you invoke a facility command, and it is done. The
calls have to be answered or in the alerting stage to succeed. We
may make a stab at this for Freeswitch when we get a better grip on
it. I have a spec I can try to dig up for you if you would like.
Maybe it is making some progress moving up on the Sangoma list.
On 1/27/2011 5:16 PM, Holger Esser wrote:
Hi, does anybody have a detailed description of how to
implement the TBCT transfer method with Sangoma cards?
I was looking at the att_xfer but I am not sure if that would
cover TBCT.