We have a configuration with a central Call Manager and one remote locations. We have hardware conferencing via a 6608 at the head end.Regions are set up and we are using g.711 within each region, G.729 between regions. We can conference fine between locations from IP phones. However, if a person at the remote location calls someone on the PSTN(out their local PRI/gateway) and transfers that person into an active conference the PSTN person gets dropped.
Both locations use the same Media resouce group/list since it is the same hardware (central 6608). Transcoders, MTPs and confrencing are configured in this MRG.
But, I have to use g729 between location because of less bandwidth consumption. I just can't use g711 between central and remote location... What then? How to make conference between central and remote users?
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