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    Factory Reset SIP Phones

    The VoIP Help Page Team·4 min read·Last updated: March 14, 2026

    **Scope**:

    The following steps will allow you to factory reset the following SIP phones.

    Requirements:

    Some phones & firmware may require admin password to reset. It is recommended to ask your service provider or phone vendor to provide these password prior to resetting them.

    1. 1
      Reboot the phone
    2. 2
      When you see Starting Application, press cancel to interrupt press Cancel
    3. 3
      Immediately press and hold the 1, 3, and 5 keys until Enter password to reset settings appears
    4. 4
      Use the MAC address as the password. This can be found on the back of the phone
    5. 5
      Your phone is now factory reset and the default admin password should be 456.
    1. 1
      Reboot the phone by press and hold the dial pad keys 0, 1, and 3 all at once for around three seconds or until you hear a confirmation tone.
    2. 2
      Next press and hold the dial pad keys 1, 3, and 5 simultaneously until you are prompted to enter a password.
    3. 3
      Then enter your administrator password to factory reset. Once this is done, the default admin password will be 456.
    1. 1
      Press Menu
    2. 2
      Navigate to Settings > Advanced.
    3. 3
      Once prompted for a password, enter your admin password.
    4. 4
      Select Admin Settings
    5. 5
      Navigate to Reset to Default then select Reset to Factory
    6. 6
      Your phone is now factory reset and the default admin password should be 456.
    1. 1
      Reboot Phone
    2. 2
      Immediately press and hold these buttons simultaneously:
      • If your phone is either a SoundPoint IP 320, 321, 330. 331, 335, 430, and 450, SoundStation IP 5000 or 7000 or Soundstation Duo, press and hold 1, 3, 5, and 7 keys.
      • If your phone is either a SoundPoint IP 301, 501, 550, 600, 601, and 650 and VVX 1500, press and hold 4, 6, 8, and * keys.
      • If your phone is a SoundStation IP 6000, press and hold 6, 8, and * keys.
    3. 3
      Hold buttons until prompted for a password, then enter the MAC address of the phone.
    4. 4
      Select Admin Settings
    5. 5
      Navigate to Reset to Default then select Reset to Factory
    6. 6
      Your phone is now factory reset and the default admin password should be 456.
    1. 1
      Navigate to Menu > System > Factory Reset
    2. 2
      Press Yes when prompted

    Firmware Flash / Reset

    1. 1
      Unplug the phone from power (PoE or DC)
    2. 2
      Hold down all of the buttons on the LEFT-hand side of the screen.
    3. 3
      While continuing to hold the buttons, plug power back into the phone.
    4. 4
      When you see "firmware update" on the screen, you can let go.

    The phone should reinstall its firmware from here.

    1. 1
      From the handset press the Setup button
    2. 2
      Scroll to Factory Reset (14)
    3. 3
      Press Select
    4. 4
      Press the OK button
    5. 5
      The phone will reboot in a factory reset state.
    1. 1
      Press and hold the OK button until the message Reset to factory? appears
    2. 2
      Press Yes
    3. 3
      Once it restarts, the phone will be factory reset. The default password will be admin.

    For Yealink devices with touch screen or no OK button: (Example: T57W)

    1. 1

      Press the redial button (seen in the image below) for 5 - 10 seconds to initiate a

    2. 2

      When prompted with Reset to factory settings? press OK to confirm

    1. 1
      Scroll to the button Reset to Factory
    2. 2
      The Phone will reboot and will still pull the configs on your RPS
    1. 1
       Log in to the Phone UI
    2. 2
      Navigate to Advanced -> click Update tab
    3. 3
      Click the Reset button, then click Yes

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