[Serdev] contribution: SER module implementing Path extension(RFC 3327)

[Klaus Darilion]

Juha Heinanen wrote:
> Klaus Darilion writes:
> 
>  > Nevertheless, the IMS infrastructure deals with distribution and high 
>  > availability. Thus, using IMS concepts for "normal" SIP setups might be 
>  > interesting.
> 
> the only thing that currently prevents ser to achieve high availability
> + redundancy is nat and the fact that we let customers freely choose
> their terminals, whose quality varies.  can ims terminals sit behind
> nats?

If the outboundproxy makes NAT traversal - why not? The Path header 
ensures that the call will be routed via the OBP which has the NAT binding.

Of course you still need a solid NAT.

regards,
klaus