We have IP CCIS connection between an SV8500 and an SV9300. The connection is up and we have no problem making phone calls either direction.
On the SV9300, there is a 32-party conference bridge on the CPU. That conference bridge has been programmed up and it's also working just fine.
PROBLEM:
When I call from the SV8500 from a TDM station to the SV9300, and they transfer me into the conference bridge I lose audio. But it only happens if I'm on a TDM station, and consequently, my call has to go via our IP-PAD card.
If I call from an IP station on the SV8500, and I get transferred into the conference bridge, I don't lose audio.
I have assigned a LOC ID to the 9300 and used the AIVCN command (the AIVCL had no effect on the codec used) to manipulate the codec to be used. We have been suspecting some sort of codec or payload issue between the IP-PAD card of the SV8500, but we have tried to force both G711 (20,30 and 40ms payload) from both ends, as well as G729 (with 20, 30 and 40ms payload) and none worked out.
On the SV9300, there is a 32-party conference bridge on the CPU. That conference bridge has been programmed up and it's also working just fine.
PROBLEM:
When I call from the SV8500 from a TDM station to the SV9300, and they transfer me into the conference bridge I lose audio. But it only happens if I'm on a TDM station, and consequently, my call has to go via our IP-PAD card.
If I call from an IP station on the SV8500, and I get transferred into the conference bridge, I don't lose audio.
I have assigned a LOC ID to the 9300 and used the AIVCN command (the AIVCL had no effect on the codec used) to manipulate the codec to be used. We have been suspecting some sort of codec or payload issue between the IP-PAD card of the SV8500, but we have tried to force both G711 (20,30 and 40ms payload) from both ends, as well as G729 (with 20, 30 and 40ms payload) and none worked out.