I powered a 7941G and the headset, mute and speaker buttons display steady LEDs, the phones also gives a jittery noise and the LCD is blank. None of the buttons are active. previously the phone had powered normally.
Any one ever come across such a case? What advice can you suggest?
I tried the same procedure for factory reset in several 7911 IP phones, but it seems that the factory reset never ends. The light on the handle keeps blinking all the time. How long it takes for a 7911 phone to factory reset ?
When I tried this procedure to 7961 IP phones, it only takes a while. The default load for 7911 and 7961 exist in my TFTP server, so it's not the problem.
Strangely, when I tried the last procedure in the TAC case which is using the sequence 3491672850*# in my 7911 IP phones, the lights change into red, but after a while the phones hang and cannot be recovered anymore.
So, what do you think ? Did I miss something ? Thanks.
I use Call Manager publisher as TFTP server. Can I use trace to see it? I'm quite certain that the phones can contact the TFTP server. And I observe that when I do the factory reset, the LED blinking forever and the LCD displays the logo of Cisco Systems. Does this procedure always works all the time ?
Now try this. Download tftp32 (search with google) on you PC. Configure so that does DHCP with option 150 pointing to your PC. Copy all the firmware files on your PC. Connect phone to PC directly. You will be able to see which files the phone is requesting and if you are missing any.
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