Skip to content

Calisto P540-M: How to Dial Internationally

Article ID:


How do I make international calls on the Calisto P540-M phone?

To place an international call using the dialpad on the Calisto P540-M phone:
  1. Press the "0" button on the keypad for 1.5 seconds (the "0" on the display changes to a "+").
  2. Key in the international phone number.
  3. Take the handset off of the phone. The phone will automatically add the additional country and other access codes and dial the number.