Quick Reference

Function What It Does Dial Sequence Example
Lock NDD & IDD Blocks National & International calls #570 2 PIN # #57021234#
Lock IDD Only Blocks International calls only #570 3 PIN # #57031234#
Unlock Line Removes outgoing call restrictions #571 2 PIN # #57121234#
Change PIN Updates your security PIN #575 OLD_PIN * NEW_PIN * NEW_PIN # #5751234*2859*2859#

Instructions

Lock NDD & IDD Calls

  1. Lift the handset or press the line button.
  2. Dial #570 2 PIN #.
  3. Wait for the confirmation tone.
  4. NDD and IDD calls are now blocked.

Lock IDD Calls Only

  1. Lift the handset.
  2. Dial #570 3 PIN #.
  3. Wait for the confirmation tone.
  4. IDD calls are now blocked.

Unlock the Line

  1. Lift the handset.
  2. Dial #571 2 PIN #.
  3. Wait for the confirmation tone.
  4. Outgoing restrictions are removed.

Change Your PIN

  1. Lift the handset.
  2. Dial #575 OLD_PIN * NEW_PIN * NEW_PIN #.
  3. Wait for the confirmation tone.
  4. Your new PIN is active.

Notes

  • Default PIN is usually 1234, unless changed.
  • PIN must be 4 digits.
  • On older phones, press keys slowly so the code registers.