I'm currently using g729r8 on a cisco mc3810 w/ a frame-relay 128K cir.. with a nortel key system.. no ip phones.. so i guess. you could say VoIP over FR .. my question is.. we have bad delay, static, and echo problems.. we are upgrading to t1's.. but do you suggest to keep the same codec?.. i've heard g711 is good.. any suggestions
You have told nothing about QoS in your network. While echo is NOT caused by a VoIP network, the existing echo can indeed become worse, more annoyable, because of delay. I don't think your problem is the codec, but it seems to me that there's no queue, fragmentation, interleaving and prioritization set in your network.
Giving precedence won't solve your problems on a low bandwidth frame link. My suggestion would be to implement low latency queuing with frame relay traffic shaping and frame relay fragmentation. check out this link:
Can you please give an example of your map-class for the frame and are you doing any QOS other than setting the IP precedence to 5. I would suggest using LLQ to priortize the voice traffic over the data. Are you doing any fragmentation. Go ahead and post the configs for you serial interface and the map-class and we will try to help you. Assuming you are doing no header compression g.729 is 24k a call and g.711 is 80k a call. I don't think g.711 will help.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.