[Asterisk-Users] Problems getting 7960's to play nice with Asterisk

[John Laur]

> Other things:
> The phone constantly says "Ethernet Disconnected". Even though it
tftp's
> configs and registers with the proxy.

Something is wrong with either the phone hardware itself, the network
port on the hub or switch it is attached to, the ethernet cable it is
connected with, or the 10/100 autonegotiation between the phone and the
switch. Any other problems you are having are quite likely due to these
network problems, and so you should fix this problem before you attempt
to debug any of the others.

The "Ethernet Disconnected" message on the phones is the equivalent of
having no link light on your NIC. Standard network connection debugging
applies.

Some tips: This problem is likely due to a bad cable or 10/100 auto
negotiation issues. Try known, working cables on a known working
switch/hub port to see if the problem occurs. Try plugging it into
another switch (preferably of different brand) if you have one. The 7960
cannot be forced to either 10 or 100mb operation, so if you do determine
that it's not the cable or phone hardware, you'll have to either find a
way to force 10 or 100mb operation on your switch or you'll have to get
a new one...

Once you get your phone hooked up to the network without problems, then
you can start looking at the software issues..

John