Hi, We can user multiple m line in the offer to take care of both V4 and V6. Also you can refer ANAT RFC for SDP negotiation.
Regards Sunil Verma ESN: 877-5050 Ph: +919731245000 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Klaus Darilion Sent: Wednesday, February 17, 2010 7:14 PM To: sip-implementors Subject: [Sip-implementors] ipv6/ipv4 interworking Hi! Consider the simple scenario: caller is dual-stacked and supports IPv4 and IPv6. When creating the SDP, the caller does not know if callee use IPv4-only, IPv6-only or is dual-stacked too. SIP probably is not an issue and will be done by the proxies - but what about finding the proper IP version for the RTP session. Should the caller announce 2 streams with different IP versions? Or should it try one IP version first, and if the SDP is rejected retry SDP with other IP version? Is this behavior somewhere described (best practice)? Thanks klaus _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors Please do not print this email unless it is absolutely necessary. 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
