[cisco-voip] Audio cut-through delays upon transfer

[James Andrewartha]

On 13/01/17 05:51, Dana Tong wrote:
> I have this command configured. One thing i found out yesterday is that
> it apparently happens when all parties are internal also. So no trunk
> involved.
> 
> Personally I haven't experienced this in my testing. It was 2-3 seconds
> for audio to establish which i thought was ok. The customet had said
> they timed it to be 8-9 seconds.
> 
> I might have to do a wireshark and see if there are retransmissions for
> signalling.

We've experienced something similar for about 2.5 years, on some calls
one party won't be able to hear audio for 5-10 seconds. These are all
internal calls, single site, phones (7965 and 7975, SCCP) on a flat L2
network, one pub, one sub. It even survived an upgrade from 8.6 to 10.5.
We opened a case and TAC asked for a trace of it happening, but we
couldn't reproduce it easily. I keep meaning to get back to it, but
haven't had the time given how hard it is to reproduce.

-- 
James Andrewartha
Network & Projects Engineer
Christ Church Grammar School
Claremont, Western Australia
Ph. (08) 9442 1757
Mob. 0424 160 877