68Useful FunctionsUsing the DTMF Function10 While pressing the p switch, press your desired key (1 to 0).Using a keypad key, select the channel of the DTMF memory containing the DTMFcode to be sent.Hints • The registered DTMF code is sent.• The sent DTMF tones are heard from the speaker.11 Release the p switch.Even after the p switch is released, sending of the DTMF signal continues until it iscompleted.Sending a DTMF Code Manually1 Press the M key more than 1 second.The Set mode is selected.2 Turn the O knob to select “4 SIGNALING”.3 Press the M key briefly.4 Turn the O knob to select “4 DTMF MODE”.5 Press the M key briefly.6 Turn the O knob to select “MANUAL”.7 Press the M key more than 1 second.8 Press the M key more than 1 second again.Manual entry is enabled.9 While pressing the p switch, press one of 1 to 0 keys.Using a keypad key, select the DTMF code to be sent.Hints • The DTMF code corresponding to the pressed key is sent. (See the table shown below.)• The sent DTMF tones are heard from the speaker.10 Release the p switch.Even after the p switch is released, sending of the DTMF signal continues until it iscompleted.Hint• A DTMF code is a combination of two frequencies.1209 Hz 1336 Hz 1477 Hz 1633 Hz697 Hz 1 2 3 A770 Hz 4 5 6 B852 Hz 7 8 9 C941 Hz 0 # D
