We have a UC520 with 2x SPA525G and 2x CP-524SG phones.
System has been up and running for a couple of weeks, and for some reason this morning I came in to find the CP-524SG's powered off! I have checked cabling back to UC520 and thats fine.
I recall configuring LCD power off on the handsets, but that shouldn't switch the handset off if its idle should it?
This causes a problem as the users come in, and then can't get any lan connectivity from there PC's as the phones are off! to work around we have to unconnect the lan connection from the phone and plug directly into PC.
The two SPA525G users are fine, those handsets are unaffected and remained on.
We only have 4 PoE devices (aforementioned) plugged into the UC520! so lack of power from the switch shouldn't be an issue. Later this afternoon, one of the unused phones powered on! all on its own accord! the other phone is still off as its not plugged in.
All ports (8 fast ethernet) on the uc520 are configured for auto with regards to supplying PoE. We also have an additional 8 port PoE cisco switch connected to the UC520, which has network printers plugged in. Again no PoE devices plugged in. This is connected to the UC520 via the gigabit port.
Faulty cabling? switch ports? or handsets?
Might it be an idea to move the 2 CP-524SG's to the other 8 port Cisco PoE switch?
Thanks in advance