1. If you are already in a call, one of the line keys lights up (continuous light).
2. A call waiting tone indicates a second call is coming in. At the same time, a second line key flashes rapidly. Press the line key (next to the rapidly flashing LED), to accept the call.
3. You can now toggle between the calls, by directly pressing the “Line keys”. In doing so, the active call is indicated with a continuous LED light and the waiting call with a flashing LED light.
To end a call, press the cancel key . Hanging up will end both calls.