[Asterisk-Users] Cisco 7960 and short delay before voice starts after ring.

Rich Adamson radamson at routers.com
Wed Mar 3 07:08:13 MST 2004

Ops, guess I should have read that a little closer. Not enough coffee yet. :(

> I think what James is referring to is the delay once the call already been dialed.  It's not 
specific to Ciscos, as I'm experiencing the same problem on my polycom phones.  Must be SIP 
> The problem is that once a call is dialed, when the remote party picks up the phone, the first 
half second is cutoff.  The remote party won't hear the first half second of the call.  I had 
this happend several times in the last few days.  I've also had a few complaints from users 
recently.  Here's what it looks like.
> SIP phone dials 555-1234 (outside line via PRI)
> 555-1234 rings
> 555-1234 answers and says "Hello"
> SIP phone hears "o"  or nothing at all.
> If 555-1234 is slow to say something, then everything is heard fine.
> Caveats.  echotraining and echocancel are enabled on the PRI, however, similiar Zap calls are 
not affected.

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