[Asterisk-Users] Asterisk <--> Cisco router

[Rich Adamson]

> What codec should be used to connect a * box to
> a cisco router which has a t1 with 24 trunks coming in?
> 
> My router voip dial plan looks like this:
> 
> dial-peer voice 2 voip
>  destination-pattern [1,2,,3,5,8]..
>  session protocol sipv2
>  session target ipv4:10.x.x.x
>  dtmf-relay cisco-rtp
>  codec g711ulaw
>  no vad
> !
> 
> The problem I have is when more than one call is on it,
> sometimes the quality gets very bad.
> 
> If more than one access the conference room it starts to 
> blip real badly. 

Just a guess... ensure asterisk and the cisco (and anything else
between the two) are running full-duplex ethernet. Doubtfull the
problem is related to codecs, but then I don't have a cisco to
test with either.

Rich