Ross,

On 09/30/2010 10:14 AM, Ross Beer wrote:

The phone sets up another call using INVITE and then uses REFER when the transfer takes place.

Please try to keep the list copied, as a matter of good practice.

If I understood your scenario correctly, you don't have a choice but to send the REFER to the same Asterisk server as the one hosting the original call leg, because that is the only server that is aware of that call leg. Perhaps I have not adequately understood.

However, if your question is about whether Kamailio can initiate transfers, it can, sort of. You can initiate REFERs and INVITE-hold-REFER-BYE bridges from route script a la:

http://www.kamailio.org/docs/modules/3.0.x/modules_k/dialog.html#id2700697

http://www.kamailio.org/docs/modules/3.0.x/modules_k/dialog.html#id2700815

You can also use the management interface to stimulate Kamailio to initiate a 'bridge' of this nature from an outside script:

http://www.kamailio.org/docs/modules/3.0.x/modules_k/dialog.html#id2701383

If there is anything that might serve your needs, I think it is that.

-- Alex