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Home > Archive > Voice over IP Cisco > May 2007 > PoE Phone Problem
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| DUNCAN, W B. 2007-05-30, 7:11 pm |
| I have had two phones that wont power up with PoE. I can plug these
into a power brick and they work fine. Has anyone experienced this and
more so is there a way to repair the phone?
Thanks,
W. Brian Duncan
Coordinator of Telecommunications
Ozarks Technical Community College
| |
| Paul Choi 2007-05-30, 7:11 pm |
| What fixes have you attempted so far?
--- "DUNCAN, W B." <duncanw@otc.edu> wrote:
> I have had two phones that wont power up with PoE.
> I can plug these
> into a power brick and they work fine. Has anyone
> experienced this and
> more so is there a way to repair the phone?
>
>
>
> Thanks,
>
> W. Brian Duncan
>
> Coordinator of Telecommunications
>
> Ozarks Technical Community College
>
> cisco-voip mailing list
> cisco-voip@puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-voip
>
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| Matt Slaga \(US\) 2007-05-30, 7:11 pm |
| What are the phone models?
From: cisco-voip-bounces@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] On Behalf Of DUNCAN, W B.
Sent: Wednesday, May 30, 2007 4:03 PM
To: cisco-voip@puck.nether.net
Subject: [cisco-voip] PoE Phone Problem
I have had two phones that wont power up with PoE. I can plug these
into a power brick and they work fine. Hasanyone experienced this and
more so is there a way to repair the phone?
Thanks,
W. Brian Duncan
Coordinator of Telecommunications
Ozarks Technical Community College
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| |
| Jonathan Charles 2007-05-30, 7:11 pm |
| I am presuming you have tried placing these phones in the locations of
existing, working phones to ensure it is not a cabling issue. If not,
then do so. We need to find out if it is a phone or cabling issue.
If they do not power up at the other position, then it is a dead phone, RMA it.
If they do, then we have a cabling issue of some sort. Is it possible
we have a non-POE switch between there and the MDF?
We could also have a crushed cable, a really long run, etc... If it is
just a power issue (good ethernet, bad power), then plug it in there
and use a power brick to power up the phone...
Jonathan
On 5/30/07, DUNCAN, W B. <duncanw@otc.edu> wrote:
>
>
>
>
> I have had two phones that wont power up with PoE. I can plug these into a
> power brick and they work fine. Has anyone experienced this and more so is
> there a way to repair the phone?
>
>
>
> Thanks,
>
> W. Brian Duncan
>
> Coordinator of Telecommunications
>
> Ozarks Technical Community College
> ________________________________________
_______
> cisco-voip mailing list
> cisco-voip@puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-voip
>
>
| |
|
| It could also be an issue with the port. (Sorry if you've already ruled
this out) I've experienced switches turning POE off on individual ports
once a non POE device was connected to the port. You have to manually
enable POE on these ports to bring it back up. There's a show command
that will indicate if POE is on or off on switch ports.
-----Original Message-----
From: cisco-voip-bounces@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] On Behalf Of Jonathan
Charles
Sent: Wednesday, May 30, 2007 5:56 PM
To: DUNCAN, W B.
Cc: cisco-voip@puck.nether.net
Subject: Re: [cisco-voip] PoE Phone Problem
I am presuming you have tried placing these phones in the locations of
existing, working phones to ensure it is not a cabling issue. If not,
then do so. We need to find out if it is a phone or cabling issue.
If they do not power up at the other position, then it is a dead phone,
RMA it.
If they do, then we have a cabling issue of some sort. Is it possible
we have a non-POE switch between there and the MDF?
We could also have a crushed cable, a really long run, etc... If it is
just a power issue (good ethernet, bad power), then plug it in there
and use a power brick to power up the phone...
Jonathan
On 5/30/07, DUNCAN, W B. <duncanw@otc.edu> wrote:
>
>
>
>
> I have had two phones that wont power up with PoE. I can plug these
into a
> power brick and they work fine. Has anyone experienced this and more
so is
> there a way to repair the phone?
>
>
>
> Thanks,
>
> W. Brian Duncan
>
> Coordinator of Telecommunications
>
> Ozarks Technical Community College
> ________________________________________
_______
> cisco-voip mailing list
> cisco-voip@puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-voip
>
>
________________________________________
_______
cisco-voip mailing list
cisco-voip@puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-voip
| |
| Rich Johnston 2007-05-30, 7:11 pm |
|
Also, it you should review the number of ports with active PoE. You
might have exceeded the switches power supply capability. Turn off PoE
on ports that don't require power.
Richard Johnston, RCDD
Director. Of Network & Telecomm.
Suffolk County Community College
533 college Road, Selden, NY 11784
Tel:631-451-4190 Fax:631-451-4970
Email: johnstr@sunysuffolk.edu
This e-mail is intended solely for the person or entity to which it is
addressed and may contain confidential and/or privileged information.
Any review, dissemination, copying, printing or other use of this e-mail
by persons or entities other than the addressee is prohibited. If you
have received this e-mail in error, please contact the sender
immediately and delete the material from any computer.
-----Original Message-----
From: cisco-voip-bounces@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] On Behalf Of
peter.perreault@thomson.com
Sent: Wednesday, May 30, 2007 6:04 PM
To: jonvoip@gmail.com; duncanw@otc.edu
Cc: cisco-voip@puck.nether.net
Subject: Re: [cisco-voip] PoE Phone Problem
It could also be an issue with the port. (Sorry if you've already ruled
this out) I've experienced switches turning POE off on individual ports
once a non POE device was connected to the port. You have to manually
enable POE on these ports to bring it back up. There's a show command
that will indicate if POE is on or off on switch ports.
-----Original Message-----
From: cisco-voip-bounces@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] On Behalf Of Jonathan
Charles
Sent: Wednesday, May 30, 2007 5:56 PM
To: DUNCAN, W B.
Cc: cisco-voip@puck.nether.net
Subject: Re: [cisco-voip] PoE Phone Problem
I am presuming you have tried placing these phones in the locations of
existing, working phones to ensure it is not a cabling issue. If not,
then do so. We need to find out if it is a phone or cabling issue.
If they do not power up at the other position, then it is a dead phone,
RMA it.
If they do, then we have a cabling issue of some sort. Is it possible
we have a non-POE switch between there and the MDF?
We could also have a crushed cable, a really long run, etc... If it is
just a power issue (good ethernet, bad power), then plug it in there
and use a power brick to power up the phone...
Jonathan
On 5/30/07, DUNCAN, W B. <duncanw@otc.edu> wrote:
>
>
>
>
> I have had two phones that wont power up with PoE. I can plug these
into a
> power brick and they work fine. Has anyone experienced this and more
so is
> there a way to repair the phone?
>
>
>
> Thanks,
>
> W. Brian Duncan
>
> Coordinator of Telecommunications
>
> Ozarks Technical Community College
> ________________________________________
_______
> cisco-voip mailing list
> cisco-voip@puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-voip
>
>
________________________________________
_______
cisco-voip mailing list
cisco-voip@puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-voip
________________________________________
_______
cisco-voip mailing list
cisco-voip@puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-voip
| |
| DUNCAN, W B. 2007-05-31, 1:11 pm |
| I probably should have elaborated more. The trouble with both of these
phones seems to be the power module. I plugged a new phone into where
the bad phone was removed and it works fine. I took the bad phone to a
known good port it does not work. I plug in a power brick it works.
The phones seem to not be able to sense PoE and I was hoping perhaps
someone else might have experienced this and have some solution. My
assumption is that the phone is just no longer any good without a power
brick, but I thought I would ask.
Thanks all,
W. Brian Duncan
Coordinator of Telecommunications
Ozarks Technical Community College
From: cisco-voip-bounces@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] On Behalf Of DUNCAN, W B.
Sent: Wednesday, May 30, 2007 3:03 PM
To: cisco-voip@puck.nether.net
Subject: [cisco-voip] PoE Phone Problem
I have had two phones that wont power up with PoE. I can plug these
into a power brick and they work fine. Has anyone experienced this and
more so is there a way to repair the phone?
Thanks,
W. Brian Duncan
Coordinator of Telecommunications
Ozarks Technical Community College
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