i have one main site and i am planning to have 300 branches. i want to have G711 codec to be between phones when they call local and G729 over the WAN. I have unity server on main site serving main site users only and i have CUE on each branch to serve each branch.
all my branch users will be registed to main site where i have centralized call processing (CUCM cluster).
if i have to create one region for each branch and each branch will contact the other branches then it will end up with 300 relationships for each region
please advice what is the recommended way to have G711 localy and G729 over the WAN
That's default - inter=g729, intra=g711/g722
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Yeah, it's actually a service parameter:
Intraregion Audio Codec Default
Interregion Audio Codec Default
FYI, if you are turning up 300 branch sites, you may want to consider looking into Cisco Unified Provisioning Manager. You can probably talk to your account team more in regards to if that would fit your business needs.
I can't personally speak on the performance issues of how many regions you add, but at least from a configuration standpoint all you
do is set intra-region to g711, and then have the default between regions (enterprise service parameter, I think) set to g729. So from a configuration perspective it isn't too bad.
I don't see any other options though. You're right, that you'd need transcoders at every site if you did g729 intraregion. If you had all of your subscribers on Unity at the HQ, you could get by with a transcoder farm all located at the HQ site and use this solution.