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Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5.1 (SIP), Cisco Unified IP Phones
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Chapter9 Troubleshooting and Maintenance
Resetting or Restoring the Cisco Unified IP Phone
Performing a Factory Reset
When you perform a factory reset of the CiscoUnified IP Phone, the following
information is erased or reset to its default value:
•CTL file—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
term70.default.loads file)
Before you perform a factory reset, ensure that the following conditions are met:
•The phone must be on DHCP-enabled network.
•A valid TFTP server must be set in DCHP option 150 or option 66 on the
DHCP server.
•The termxx.default.loads.sip 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, follow these steps:
Note DHCP must be enabled in your network before you can perform these steps.
Procedure
Step1 Unplug the power cable from the phone and then plug it back in.
The phone begins its power up cycle.
Step2 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.
Step3 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.