How to Reset your Cisco Phone

Telecom and IT administrators run into numerous problems while dealing with their Cisco IP phone systems. Administration options in the Network Config and Phone Settings menus are hidden by default to ensure that users do not make changes that can affect the operation of the phone. One issue arises when the end user is having trouble getting the units to register with their Call Manager. A reset clears out any other network information that resides on the units to a default state. Besides ensuring that everything is properly plugged in your first step to resolve this issue is to do a Factory Reset.

Think of this as a reference guide to resetting your phone. Please use these procedures to your advantage.

Model 7902

1. Lift the handset, then press and hold the Menu button for about 3 seconds
2. Press # to go to the extended menu.
3. Enter the code # 322873738.
4. Hang up the phone. The phone resets.

Model 7905/12

1. Press the Menu button
2. Use the Navigation button to select Settings, and then press the Select softkey.
3. Use the Navigation button to select Network Configuration, and then press the Select softkey.
4. Pres **2. The phone will display, 'Do you want to reset all system settings to default values?'
5. Press the Yes Softkey

Model 7920

1. Press the Menu softkey
2. Press **#
3. Press the Green Key (with a handset icon) to open the administration mode.
4. Choose Menu> Phone Settings> Factory Default.
5. The phone displays the "Restore to Default?" message.
6. Press the OK Softkey. All settings are deleted.

Model 7921

1. Arrow Down to Settings.
2. Select Phone settings or press 1
3. Press **2
4. Quickly press Yes to confirm (left soft key).

Model 7935/36

1. Press the Menu Button.
2. Press the Up or Down scroll button to select the Admin Setup menu.
3. Press the Select button.
4. Enter the administrator password (the default admin password is **#) and press the Enter softkey.
5. Press the Down scroll button to select Restore Defaults.
6. Press the Select button. The following message appears: "All settings and data will be lost, including the phone book entries. Press Yes to confirm or No to exit."
7. Press the Yes softkey

Model 7937

1. Press the Applications button (the button that looks like a globe).
2. Press **1

Model 7940/60

1. Unplug the power cable from the phone, and then plug in the cable again.
2. Immediately press and hold # and while the Headset, Mute, and Speaker buttons begin to flash in sequince, release #.
3. Press 123456789*0# within 60 seconds.
4. If you repeat a key withing the sequence (for example, if you press 1223456789*0#), the sequence is still accepted and the phone resets.
5. If you do not complete this key sequesnce or do not press any keys, after 60 seconds, the phone continues with its normal startup process. The phone does not reset.
6. If you enter an invalid key sequence, the phone continues with its normal startup process. The phone does not reset.
7. If you enter this key sequesnce correctly, the phone displays this prompt: Keep network cfg? 1= yes 2= no.
8. Press 2.

Models 7906/11/41/42/45/61/62/65/70/71/75

1. Unplug the power cable from the phone, and then plug in the cable again.
2. Immediately press and hold # and while the Headset, Mute, and Speaker buttons begin to flash in sequence. The line buttons flash in sequence in order to indicate that the phone waits for you to enter the key sequence for the reset.
3. Press 123456789*0# within 60 seconds.
4. If you repeat a key withing the sequence (for example, if you press 1223456789*0#), the sequence is still accepted and the phone resets.
5. If you do not complete this key sequesnce or do not press any keys, after 60 seconds, the phone continues with its normal startup process. The phone does not reset.
6. If you enter an invalid key sequesnce, the phone continues with its normal startup process. The phone does not reset.
7. If you enter this key sequence correctly, the phone displays this promp: upgrading.

  There are a variety of issues that can be solved by resetting your phone. Some of these consist of bad connections, incorrect Static IP addressing, network failures, faulty cables, lack of power and more. Use these procedures as a starting point. While a Factory Reset has been a successful resolution for some options, it will not help physical or operational issues after the unit has been registered. Reset procedures can be irritating and time consuming, but having the knowledge to do it is invaluable.