[cisco-voip] Call going in and out

[Ryan Ratliff]

What they had you do was upgrade the DSPWare on the router.  I'd  
recommend letting the TAC CSE know the new DSPWare did not resolve  
the issue.

When you are losing audio like that either you aren't getting the RTP  
packets or you are getting them but silence is being inserted.  If  
you are using g.729 make sure you don't have 729b enabled as it has  
VAD built-in and you cannot disable it.

If the issue happens talking to PSTN callers then make sure the CM  
service parameter "silence suppression..." is disabled.  This should  
be the default.  If using an H.323 gateway make sure all of your voip  
dial-peers have vad disabled.

If you are not losing any packets at the phone then the only thing I  
can think of that will insert silence is VAD.  If that's disabled  
then it's probably a bug, hence the new DSPWare.

-Ryan

On Apr 2, 2007, at 1:14 PM, Kathy Dupree wrote:

It seems I have some odd problems but here is another one.  This one  
I have contacted TAC and their solution didn’t work so I was checking  
with you guys to see if anyone else had experienced this.  When on a  
call you will be listening to the other person and it will go out for  
a couple of seconds and then come back.  This happens continuously  
while on the call.  I have had to ask people to repeat what they said  
because I missed it.



TAC had us download a file to the router and then reboot.  We did  
that yesterday and today the issue is still happening.   Thanks







Katherine O. Dupree

Randolph-Macon Woman's College

Main 243

Telecommunications Support/Infrastructure Coordinator

kdupree at rmwc.edu

(434) 947 8371



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