On Wed, Jul 22, 2009 at 10:11 AM, Keith Gearty<[email protected]> wrote:
> Scott Lawrence wrote:
>
> No... he said they were connected by a VPN.  You're right that you cannot
> use HA if there is a NAT between the systems.
>
> Oops, I missed that.
>
> But I don't know of any way to configure the phones to get the effect he
> asked for - that they use HD locally and a more economical codec when
> traversing the site-to-site link.
>
> I see your point.  It would be nice to be able to specify that in the dial
> plan somehow.  I don't use SipXbridge myself, but I believe that if if he
> were to use separate bridged PBXs instead of HA, he could specify which
> codec for SipXbridge to use.  Is that right?

Codec negotiation is end to end through normal SIP INVITE/reINVITE
mechanisms. SipXbridge does not get involved in that choice.  We did
have codec filtering at one point but decided to remove that as there
were interoperability problems with fax ( which needs to switch codec
from G711 to T38 mid call ).

Ranga


>
> Keith.
>
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>



-- 
M. Ranganathan
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