From: Troy Rader (troy@xxxxxxxxxx)
Date: Sun Jan 14 2001 - 17:32:14 GMT-3
Jennifer,
Caslow 2nd Ed, pg 775 states that "If your configured VOIP and your call
is successfully completed, but the call itself sounds horribly distorted,
check to make srue the same CODEC types are support by both routers..."
You have the correct command to check the codec. Caslow also points out
that "the calling router, the router with the VOIP dial-peer statement
used to place the call will select the CODEC. The called router, the
receiving router, will accomodate the CODEC selected by the calling router
only if its software allows it to do so."
My understanding is that the non-pots dial-peer, like voip or vofr,
determines the codec and other dial-peers, like pots, don't need to.
If your codec on the vofr dial-peers match on each end, and you still have
this problem, I don't have an answer.
Troy
On Sun, 14 Jan 2001, 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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