Hi, As mentioned below, you also need to make sure that you have History-Info header or DIVERSION header(Based on Voice Mail server Implementation) in the SIP INVITE going to Voice mail Server which will ensure that the call redirected to voice mail will have different greeting than direct call to Voice Mail Server.
Regards Sunil Verma -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Sanjay Sinha (sanjsinh) Sent: Friday, August 24, 2007 1:16 AM To: Erich Nahum; [email protected] Subject: Re: [Sip-implementors] how voicemail is handled in SIP I do not think there is a standard way to handle voicemail, since as you note, there are so many ways. But redirecting call to a voicemail using 3xx response would be the most common way. Sanjay >-----Original Message----- >From: [EMAIL PROTECTED] >[mailto:[EMAIL PROTECTED] On >Behalf Of Erich Nahum >Sent: Thursday, August 23, 2007 1:42 PM >To: [email protected] >Subject: [Sip-implementors] how voicemail is handled in SIP > >Folks, > >Does anyone have a good idea about how routing to voicemail is >actually done in practice? It seems there are several ways of >doing it and I'm curious if there is one "standard" way. > >For example, one way is to do it at the SDP level and simply >have the UAS advertize the voicemail server as the IP address >to talk to. > >RFC 4458 provides several way to do this, but 4458 is Informational. >Is 4458 the right way, if not, is 4458 as good as any, etc. > >Here's the call flow from Section 6.2, "Endpoint Forwards Busy >to Voicemail": > >Alice Proxy Bob voicemail > | | | | > | INVITE F1 | | | > |--------------->| INVITE F2 | | > | |------------->| | > | | 302 Moved F3 | | > | 302 Moved F4 |<-------------| | > |<---------------| | | > | ACK F5 | | | > |--------------->| ACK F6 | | > | |------------->| | > | INVITE F7 | > |-------------------------------------------------->| > >Thanks, > >-Erich > >-- >Erich M. Nahum IBM T.J. Watson Research Center >Research Staff Member P.O. Box 704 >[EMAIL PROTECTED] Yorktown Heights NY 10598 >_______________________________________________ >Sip-implementors mailing list >[email protected] >https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/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 [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
