1140 Popping

[loneWolf9]

Currently I have 4 1140 phones that once 2 twice a day make a popping sound, then buzz. The screens are blank, and the call is dropped.

To fix the issue the phone is unplugged for a min and plugged back in.

We have upgraded to latest firmware from Nortel.

They are POE
The switch ports are monitored for both network and power.
There is nothing in logs.

There is nothing in the log of the CS1000.

I suspect a bad batch of hardware on phones.

Has anyone ever heard or seen this?

 

[curtismo]

Out of a recent batch of 1100 phones I had:
- one 1140 that failed within 24 hours of placement. Now only has a lit screen and does nothing else;

- a totally-dead 1110 out-of-box failure.

 

[loneWolf9]

What we have found so far.
If we take the affeceted phones off of POE, and place them on straight power then they don't have the issues of "popping" and "buzzing"
Now the question is there a power issue with the POE switch or with the phones POE ability?

 

[Johnthephoneguy]

Trade the ports of a good phone without popping for one that does.

if the popping ocurs on the phone that was good previously you know it is the port. If the problem stays with the same phone its the phone.

JohnThePhoneGuy

"If I can't fix it, it's not broke!

 

[loneWolf9]

Wanted to post solution to the problem.

POE switch was not working properly.
Mind you the switch itself showed no errors in any of it's logs.

Once the switch was changed out the problem went away.

So if your POE phones try switching the switch. If that is not an options try the external power bricks. We did this on the old switch and those phones stopped having issues.