I have 14 phones that have just stopped working, they are the 7970 series with color displays. The phone powers up and the 8 buttons on the top right flash green from the first button down and the head set is lit green. The screen does not come on. I have checked the DHCP server and do not see that the mac address has registered or asking for an address. I have the options 150 and 66 pointing to the server with the images. I have tried holding # till the light go down the side and hitting 1 2 3 4 5 6 7 8 9 * 0 #, but nothing. I have tried with the network PoE and just the power adapter. I can not even get the sceen to light out so see setting.
Do I need to open the phone up and reset something?
I have other phones that have done this giving me around 40 phone that have fallen to this problem. The phones are only around 4 years old. Is this a common problem?
Phone is trying:
Read request for file . Mode octet [01/03 13:34:57.391]
You may be trying a firmware too recent. Try some 7.x first. Also try the other reset sequence 3491672850*#