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Cisco Unified IP Phone 7975G Administration Guide for Cisco Unified Communications Manager 7.0 (SCCP and SIP)
OL-15790-01
Chapter 9 Troubleshooting and Maintenance
Resetting or Restoring the Cisco Unified IP Phone
Performing a Factory Reset
When you perform a factory reset of the Cisco Unified IP Phone, the following information is erased or
reset to its default value:
•
CTL file—Erased
•
LSC—Erased
•
User configuration settings—Reset to default values
•
Network configuration settings—Reset to default values
•
Call histories—Erased
•
Locale information—Reset to default values
•
Phone application—Erased (phone recovers by loading the term75.default.loads file)
Before you perform a factory reset, ensure that the following conditions are met:
•
The phone must be on a DHCP-enabled network.
•
A valid TFTP server must be set in DCHP option 150 or option 66 on the DHCP server.
•
The term75.default.loads file and the files specified in that file should be available on the TFTP
server that is specified by the DHCP packet.
To perform a factory reset of a phone, perform the following steps:
Procedure
Step 1
Unplug the power cable from the phone and then plug it back in.
The phone begins its power-up cycle.
Step 2
While the phone is powering up, and before the Speaker button flashes on and off, press and hold
#
.
Continue to hold # until each line button flashes on and off in sequence in orange.
Step 3
Release
#
and press
123456789*0#
.
You can press a key twice in a row, but if you press the keys out of sequence, the factory reset will not
take place.
Erase
softkey
From the Settings menu, unlock phone options
(see the
“Unlocking and Locking Options”
section on page 4-3
). Then press the
Erase
softkey.
Resets user and network configuration settings
to their default values, deletes the CTL file from
the phone, and restarts the phone.
From the Network Configuration menu, unlock
phone options (see the
“Unlocking and Locking
Options” section on page 4-3
). The press the
Erase
softkey.
Resets network configuration settings to their
default values and resets the phone. (This
method causes DHCP reconfigure the IP address
of the phone.)
From the Security Configuration menu, unlock
phone options (see the
“Unlocking and Locking
Options” section on page 4-3
). Then press the
Erase
softkey.
Deletes the CTL file from the phone and restarts
the phone.
Table 9-4
Basic Reset Methods (continued)
Operation
Performing
Explanation
