Sometimes phones will act like this if the power is not appropriate.  Check
a known good phone there on that port or try a power brick plugged into the
phone to get it working.  If power brick and all does not work maybe someone
else has a suggestion

Here are the power requirements for some phones.

http://www.cisco.com/en/US/prod/collateral/voicesw/ps6788/phones/ps379/white_paper_c11-481292.html



On Sun, Jul 10, 2011 at 6:21 AM, Vega Wong <vega2...@yahoo.com.au> wrote:

> Hi Experts
>
> I think my 7961 phone is faulty, when I plugged it into the switch, all LED
> are on and stayed on. Nothing come up on the screen.
>
> I tried to factory default it by pressing the "#" key, but it doesnt seems
> to response.
>
> Has anyone encounter something like this?
>
> Please help
>
> Thnaks
>
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