RE: 3gpp transition solutions, revision -02

[<Jasminko.W.Mulahusic@telia.se>]

> This means that IMS itself has no interworking problems, no 
> NATs, no NAT-PTs, and no IPv4 - it is only IPv6. Thus, there 
> are no problems inside the IMS. The NAT-PT would come to the 
> picture if, for instance, you have to place a call to another 
> "system" that does not support v6. (It may be that you have 
> to do another kind of translation as well, e.g. SIP to H.323, 
> or SIP to ISUP, or whatever.) 
> 
> (BC) And if that is the case, the IWU that does this 
> translation can be dual
> stacked, with its IPv6 stack talking to IMS and its IPv4 stack talking
> to the legacy system. If you do that, NAT-PT isn't needed.
> 

that will take care of the signalling part. you still need a box to translate the media flow, which is not going through the ims.

jasminko