From: David M Anderson (dma@xxxxxxxxx)
Date: Sun Jan 14 2001 - 17:27:28 GMT-3
I believe you need to turn on a feature called echo cancellation. That should
kill the background noise you are hearing.
Thanks,
David
At 02:09 PM 01/14/2001 -0600, Jennifer Joy wrote:
>Ok, I know this is weird.
>
>I just got new voice ports for my lab. When I go locally between
>the ports on the routers all is well.
>
>If I use VoIP over my frame network (with and without various QoS
>settings) I get this background sound which is something like
>the mumblings of a ghostly daffy duck clan. Serial links are
>set anywhere from 72k to 2Mb.
>
>This is on both lab 18 and lab 15 from ccbootcamp.
>
>It is pretty funny! It happens right when the phone rings, and
>then when I talk, I get that again. I can't even tell what I
>am trying to say. There are periods of quiet. It seems a little
>like feedback from something.
>
>Also, how does one tell what codec you are using? "Sh dial-peer voice"
>shows me for the voip port, but not the "other side" the pots.
>
>One router is 12.0(9) on a 2600 and the other is 12.1(6) on a 3640.
>
>
>Thanks,
> Jennifer
>
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