IP 4690 constantly humming...

[avidbumble]

I have an IP 4690 that is constantly humming, kind of sounds more like a beating heart. I changed the power supple even swapped the phones and it still humming/beating. This is telling me that it is probably not the sets or power supply, unless I have two bad sets, which could be possible. Lets assume the second set is ok; could something on the network be causing this humming suddenly?

 

[PBXTech]

move the headset device away from the phone.

 

[avidbumble]

no headsets or computers when I am in the room doing testing and trying to figure out what is going on. THanks for the feedback I had notthought of that.

 

[PBXTech]

how close is the power supply to the set? have you tried using an ethernet cable to the phone that has the ferrites on each end?

 

[randyb19]

when this happens to ours, I have to get the phone replaced. Luckily, they are under maintenance. Sadly, you have no idea what you'll get back.