[cisco-voip] Switch replacement causes one-way audio?

Tim Smith thsglobal at gmail.com
Wed Feb 11 21:24:34 EST 2009

As a side note...

Never hard code to 100 / full unless you can set both sides.. i.e. switch
port and the phone.

If you set 1 end to 100 full and the other end to auto, you will have a
duplex mismatch.. probably the most common networking issue. The auto side
will usually assume it is half duplex, and you will have collisions and
errors and throughput problems.

Better policy to leave these user / phone ports as auto on both end.



On Thu, Feb 12, 2009 at 9:09 AM, Biffle, Gerrad <
Gerrad.Biffle at greensboro-nc.gov> wrote:

>  This past weekend our network team replaced some aging 4006s with 3750
> stacks.  Since then we've had users complaining that callers on the far
> end cannot hear them.  Our first thought was to hard code the switch-port
> to 100/full (we're using 7960Gs) – and that didn't seem to help.
> Does anyone have any ideas on what we could check before opening a TAC
> case tomorrow?
> Thanks.
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