routetehpacketz
MIS
Hello,
This forum has been a great help for a lot of questions I've had with the Nortel CS1000E (rel. 7.6) environment I've inherited. I just wanted to thank everyone for their contributions of Nortel knowledge.
I'm trying to correct an issue we've been facing for who-knows-how-long and have finally diagnosed it as a codec negotiation issue. The gist of it is a call from the PSTN will go to our CS1000 and offer G.711u and G.729, and the CS1000 will elect to use G.729. If the call ends up transferring to voicemail (3rd party product running on a Windows VM), it is ultimately dropped since voicemail only supports G.711u and G.711a. When the PSTN sees the call handing over to voicemail, it ends up sending a SIP 415 "Unsupported Media Type" since the codec suddenly changes from G.729 to G.711.
To fix the problem, I simply want to turn off G.729 on our CS1000E. However, I'm having trouble finding where to do that.
In Element Manager, I've gone to IP Network -> Nodes: Servers, Media Cards -> VGW and Codecs and there is no checkbox next to G.729.
I've also gone into Zones and have changed all of the applicable VTRK zones to Best Quality since they were on Best Bandwidth.
What other settings on the CS1000E are related to codec selection?
This forum has been a great help for a lot of questions I've had with the Nortel CS1000E (rel. 7.6) environment I've inherited. I just wanted to thank everyone for their contributions of Nortel knowledge.
I'm trying to correct an issue we've been facing for who-knows-how-long and have finally diagnosed it as a codec negotiation issue. The gist of it is a call from the PSTN will go to our CS1000 and offer G.711u and G.729, and the CS1000 will elect to use G.729. If the call ends up transferring to voicemail (3rd party product running on a Windows VM), it is ultimately dropped since voicemail only supports G.711u and G.711a. When the PSTN sees the call handing over to voicemail, it ends up sending a SIP 415 "Unsupported Media Type" since the codec suddenly changes from G.729 to G.711.
To fix the problem, I simply want to turn off G.729 on our CS1000E. However, I'm having trouble finding where to do that.
In Element Manager, I've gone to IP Network -> Nodes: Servers, Media Cards -> VGW and Codecs and there is no checkbox next to G.729.
I've also gone into Zones and have changed all of the applicable VTRK zones to Best Quality since they were on Best Bandwidth.
What other settings on the CS1000E are related to codec selection?