How to use DTMF in Phone

Use DTMF in Phone

You can preset a DTMF key in IP Phone, so that you don’t need to input it manually.

1. Enter the interface of the intercom, set the Line Key type as DTMF, and fill in the trigger code.
2. Press the speed dial key to call the indoor microphone, and enter into a call.
3. Press “Line Key - DTMF “ or input 1234 directly from the keypad, then the intercom will play DTMF tone.
4. Enable the output port of the intercom terminal to realize the operation such as opening the door.

Phone GUI