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

[Anthony Holloway]

How does it show 0 packets received, but also 0 packets lost?  Somethings
not right in the report from CMR.

On Tue, Apr 10, 2018 at 10:48 PM James Andrewartha <
jandrewartha at ccgs.wa.edu.au> wrote:

> On 13/01/17 09:25, James Andrewartha wrote:
> > 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.
>
> Well, some staff have moved to a demountable with a switch daisy-chained
> from another and it's happening quite a bit now. Looking at the CDR I
> can see that one end is just not receiving the packets. The phones are
> on the same subnet/VLAN, and the switch ports have no errors. I'm going
> to set up a span capture but does anyone have any suggestions on where
> to look? CUCM 10.5.2.15900-8, 7975/7965 with SCCP[47]5.9-4-2SR2-2S.
>
> Parameter       Origination     Destination
> MediaTransportAdd_Ip    10.100.254.227  10.100.253.223
> PayLoadCapability       6       6
> MediaCap_g723BitRate    0       0
> Packets Sent    714     712
> Octets Sent     122808  122464
> Packets Received        711     0
> Octets Received         122292  0
> Packets Lost    0       0
> Jitter  0       0
> Latency         0       0
> QoS     G       G
> VideoCap_Codec  0       0
> VideoCap_Bandwidth      0       0
> VideoCap_Resolution     0       0
> VideoTransportAddress_IP        0.0.0.0         0.0.0.0
> VideoTransportAddress_Port      0       0
>  --
> James Andrewartha
> Network & Projects Engineer
> Christ Church Grammar School
> Claremont, Western Australia
> Ph. (08) 9442 1757
> Mob. 0424 160 877
> _______________________________________________
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> cisco-voip at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-voip
>
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