I have a 7936 conference phone that just won't play. It gets an IP address then keeps saying it can't contact the TFTP server. Any ideas?
It's on the same switch and VLAN as a bunch of 7940s, a 7985, and a 7937. None of those are having any problems.
It gets an IP address from the DHCP server just fine. It knows about the right TFTP servers, it shows their IP addresses as "Contacting..." immediately before the "Cannot contact TFTP server" messages.
I can get onto the web interface on the 7936 no problem, so it has network connectivity. If I set "Use alternate TFTP server" to "Yes" and give it an IP of an appropriate TFTP server, it still doesn't work. If I use the ping diagnostic via the phone's web interface, it can ping all three available TFTP servers just fine.
I've tried setting the phone back to factory defaults. No change.
I've tried restarting the TFTP services on the call managers (even if no other phones were having trouble it had to be worth a shot) - no change.
The troubleshooting info I can find on the Cisco site or via google only suggests basic stuff that I've already tried. Is there some magic incantation required to make a 7936 behave? :)