yes, that is very possible (and already supported). Consider the case when media does not terminate on the same network element as the signaling and signaling can take many hops while media could be simply point to point. Those in-between signaling hops (proxies or B2BUAs) may be IPv4-only.
Neb -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Brez Borland Sent: Tuesday, November 22, 2011 3:25 AM To: Michael Lui (milui) Cc: [email protected] Subject: Re: [Sip-implementors] Is it valid/legal to IPv4 control channel and IPv6 data channel? Hi Michael, SIP is signalling, and SDP describes the media session. These are two separate channels. I can't see SIP being done through IPv4 and media session over IPv6 to be a problem. This is theory. But can anybody comment from their experience? Regards, Brez On Mon, Nov 21, 2011 at 5:06 PM, Michael Lui (milui) <[email protected]>wrote: > Hi experts, > > > > Is it valid/legal to IPv4 control channel and IPv6 data channel? > > For example, the INVITE exchange is in IPv4 but the IP addresses > specified in SDP is IPv6. > > > > I don't think this is common but If allow, what is the practical > scenario? > > > > Thanks, > > Michael > > > > _______________________________________________ > 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 _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
