Call Return or *69 Service

Dialing *69 is a popular feature from the golden age of telephone systems. Dialing *69 on POTS (Plain Old Telephone Service) phones would redial or call back the last person that called you. In an age where phones did not have memory, displays and call histories that displayed Caller ID this was important.

Modern VoIP phone systems do not work the same, it is impractical to duplicate this behavior. There are more effective features built into modern VoIP/SIP phones. Unfortunately, there is not a standard, but these examples should give you a clue how to do this with almost any modern VoIP phone:

Grandstream 16xx series: Use the up arrow to display call history. Use the up and down arrow to pick a caller, press Dial (button on bottom of screen) to dial. Quick: Press up arrow and dial.

Grandstream 21xx series: Use the History button on the screen to display call history. Use the up and down arrow to pick a caller, press Dial (button on bottom of screen) to dial. Quick: Press History and Dial.

Atcom/Ring-U A20W: Use the History button on the screen to display call history. Use the up and down arrow to pick a caller, press Dial (button on bottom of screen) to dial. Quick: Press History and Dial.

Atcom/Ring-U A20W and A68W: Use the History button on the screen to display call history. Use the up and down arrow to pick a caller, press Dial (button on bottom of screen) to dial. Quick: Press History and Dial.