Resetting to factory defaults – Mitel 5055 User Manual

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Note: If you set the audio codec type to G.729, the users will not be able to use the

Conference Call feature.

4. Click the Apply button. A confirmation screen is displayed.

5. Click the OK button. The SIP Phone is updated.

Resetting to Factory Defaults

If needed, you can erase all the settings of a SIP Phone using the SIP Phone Interface:

1. Press the Menu key.

2. Press the * key on the keypad.

3. Press the # key on the keypad.

4. Press and hold the 3 key on the keypad until “USE FACTORY DEFAULTS?” is displayed.

5. Press the YES softkey. The settings are reset, and the phone reboots.