Hi,
also you should check, what your ITSP really supports. I don't think our Cisco PGW's here at Telefonica Germany supports properly Call-Transfer and it is absolutely ok, since we are providing Class 4 services and not Class 5 services (which would be handled by our Class 5 infrastructure). Call-Transfer ist a typical Class 5 feature which is normally supported by a PBX and not natively by a class 4 infrastructure.
Kind regards, Carsten
2011/2/25 Iñaki Baz Castillo ibc@aliax.net:
2011/2/25 niklas rehnberg niklas.rehnberg@gmail.com:
Hi, Have following issue:
Alice calling Bob. Bob make call transfer to Charlie (works fine) Charlie transfer Alice to David. (the call break)
Why is not possible to transfer the call more than one time? Is it any parameters?
My ITSP use SER together with Cisco MGW.
Niklas, nothing in SIP protocol neither in SER/Kamailio makes your scenario to fail. It must be a problem in your custom setup. Try identifying the problem capturing SIP traces. Also take into account that a proxy doesn't participate at all in the process of a "call transfer". It's just a transparent mechanism for a proxy.
-- Iñaki Baz Castillo ibc@aliax.net
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users