Hello. I have configured a VOIP trunk connection over frame relay. I am having a problem with the trunk connection dropping every few minutes. Also it seems that they will not connect unless I use VAD. I would prefer not to use VAD as I only will have about 10 calls at once and I am getting allot of clipped speech in the beginning of calls and after brief moments of silence.
Would need to see the full configs and version of code running on both sides to confirm if the router has been configured correctly, but possible cause may be not enough bandwidth for the total number of calls being passed. One suggestion - use VAD on the VOIP dial peers (default setting) but in main config mode add the command 'voice vad-timeout 10000' . This will make VAD kick in only after a 10000 msec (10 second) period of silence, so normal calls passing speech will be fine, but trunked calls without any audio will stop sending 'empty' packets after the timeout.
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