Yes, indeed a Re-INVITE can be initiated in both directions by the transferor.
For e.g.: A=transferor, B=transferee, C=transfer target C A B ----------> (Re-INVITE with no SDP) <---------- (200 OK with SDP_b) <-------- (Re-INVITE with SDP_b) ---------> (200 OK with SDP_c) -----------> (ACK with SDP_c) -----Original Message----- From: sip-implementors-boun...@lists.cs.columbia.edu [mailto:sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of Johan DE CLERCQ Sent: Tuesday, August 05, 2014 1:33 PM To: Sourav Dhar Chaudhuri; sip-implementors@lists.cs.columbia.edu Subject: Re: [Sip-implementors] Call transfer for an attended call without usingREFER method possible? - Email found in subject you can do that by issuing a reinvite in the dialogue. Johan. -----Original Message----- From: sip-implementors-boun...@lists.cs.columbia.edu [mailto:sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of Sourav Dhar Chaudhuri Sent: maandag 4 augustus 2014 16:12 To: sip-implementors@lists.cs.columbia.edu Subject: [Sip-implementors] Call transfer for an attended call without usingREFER method possible? - Email found in subject Hi, Is there any way when a answered call [ 200OK is already provided for initial INVITE and ACK also sent] can be transferred without using REFER method? If it is possible without REFER then please let me know required procedure. Thanks, Sourav Dhar Chaudhuri _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4716 / Virus Database: 3986/7977 - Release Date: 08/04/14 _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors