[cisco-voip] First Syllable Being Chopped

[Wydra, Jason]

Yes, VAD (voice activity detection) will do that to you. Its purpose is
to save WAN bandwidth by stopping the RTP stream when there's no speech
detection. The problem is that it's not fast enough to detect speech
again and start streaming it without cutting off part of the beginning
of speech. If for some reason you have to use VAD you can turn on
comfort noise for the voice-port. This way the local endpoints will
actual insert intentional noise to mimic what we are used to with
traditional analog lines.

 

Jason

 

________________________________

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Todd Franklin
Sent: Wednesday, July 05, 2006 7:21 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] First Syllable Being Chopped

 

Scott, 

we also have an issue where if both parties stop talking for a few
seconds, the line gets SO quiet, both parties start saying "are you
still there" because they think the line has gone dead.  Will turning
VAD off help that as well??  (For the record, these lines are POTS, and
hit are recorded as well, and the 2801 is in H323 mode). 

Scott said:
From: cisco-voip-bounces at puck.nether.net on behalf of Voll, Scott
Sent: Fri 6/30/2006 5:24 PM


To: Todd Franklin; cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] First Syllable Being Chopped

 

dial-peer voice 6001 voip

 preference 2

 destination-pattern 6331

 voice-class codec 1

 session target ipv4:x.x.x.x

 dtmf-relay h245-alphanumeric

 no vad

 

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