IP Phones POE burnout with Cisco Catalys 2960-S

[NICNGUYEN]

Hi All,

We changed our POE switch to now use a Cisco Catalys CISCO 2960-S  (48 Ethernet 10/100 PoE ports). Since then we noticed that we had to replace more often Nortel Avaya 1140E IP Phone which were all dead after a while.

Avaya 1140E IP Phone are POE Class 3 compatible with 6.0 W in normal operation (10.5 W maximum usage).

Does anybody experienced anything similar  ?

I suspect a power surge from the Cisco's POE switch. However I am not sure where to start with this issue.

Thanks & Regards

Nick

[Leo Laohoo]

I've never seen this happen before.

If your phones can go up to 10.5w, have you set the ports to go no more than, say 11.0w?

[Tagir Temirgaliyev]

you can see real power consumption on each port

sh power inline

[Aman Soi]

Hi ,

You can run the commands to diagnose the problem

a. debug ilpower  powermanagement

b. debug ilpower port on which Avaya Phone is connected

regds,

aman

[NICNGUYEN]

Hi all,

Thank you for your feedback.

Finally it is possible that our telephone sets are simply getting old after 3-4 years. Therefore changing the switch is a pure coincidence to see the phones burning out.

I found two interresting article about Avaya 1140E IP phone dying after a few years:

http://forums.networkinfrastructure.info/nortel-ip-telephony/1120e-1140e-models-failing/

http://www.bluemunkey.com/?p=47

Regards

Nick

[Aman Soi]

Hi Nicolas,

You can approach Avaya if  boxes are covered under warranty or AMC since some sort of workaround/repair  is also mentioned in second link provided.

regds,

aman