Re: [SR-Users] New SIP INVITE from UAS (new dialogue)

Hello Joao, As a general rule, speaking broadly and methodologically, Kamailio - as a SIP proxy - is not a good vehicle for the initiation of calls, since it cannot, itself, be a party to a dialog. Synthesising an INVITE using uac_req_send() isn't going to work because there's no second party to the dialog. Where will the replies to the INVITE go? Kamailio itself cannot be a party. There are, nevertheless, the ways to initiate a call from Kamailio using the 'dialog' module. The most straightforward is probably the 'dlg_bridge' / 'dlg.bridge' (MI and RPC respectively) commands, which can be called externally to Kamailio, http://kamailio.org/docs/modules/4.3.x/modules/dialog.html#idp3756384 or internally from route script, via the dlg_bridge() command: http://kamailio.org/docs/modules/4.3.x/modules/dialog.html#idp3698368 The general idea here is that an INVITE is initiated to one party and then that party is REFER'd out to another party. REFER is a SIP method that is commonly used for unattended transfers and call forwarding. You can read more about it here: https://www.ietf.org/rfc/rfc3515.txt Of course, for it to work, party #1 has to support REFER. -- Alex -- Alex Balashov | Principal | Evariste Systems LLC 303 Perimeter Center North, Suite 300 Atlanta, GA 30346 United States Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/