1)After doing hard reset # 123456789*0# the phone is showing Upgrading from long time how much time it will take and what are the next steps i have to do?
2) i have configure an ATA 186 and assigned the DID to it then i plug the phone 1 cord into line of fax but their is no dial tone what are the further steps to be done?
Can you check on the switch whether the phone is getting an IP address or not? Please make sure it is getting an IP in the subnet in which it should.
Once the phone gets an IP then it should probably be redirected to the TFTP to load the firmware.
Execute the following commands.
show cdp nei gigabitEthernet detail
IF the phone does not have an IP then we cannot do much. Alternatively try plugging the phone at a working phone port.
In case above does not work then take the phone to the main site get it upgraded and then plug it at the remote site.
PS: I am assuming that the phone is stuck at the upgrading screen and not showing any activity thereafter.