9P LACING A TELEPHONE C ALLNote: You can only make a telephone call if the telephone service is available and you have anoptional keypad microphone. Refer to “DTMF (DUAL TONE MULTI FREQUENCY) CALLS” onpage 13. Consult your dealer for further details.1 Select your desired system and group using the System and Group keys.2 Press and hold the PTT switch for approximately 1 second to ensure aconnection.• Confirm that there is a dial tone after releasing the PTT switch.3 Dial a number using the microphone keypad.• After dialing, wait for a response from the called party.4 When the called party responds, press and hold the PTT switch, then speakinto the microphone. Release the PTT switch to receive.• Only one person can speak at a time.5 To end the call, press the # key or the key programmed as TelephoneDisconnect.R ECEIVING A T ELEPHONE CALL1 Select your desired system and group using the System and Group keys.(If the Scan function has been programmed, you can switch it ON or OFFas desired.)• A ringing tone will sound when a call is received.2 Press and hold the PTT switch when speaking and release it to listen.• Only one person can speak at a time.3 To end the call, press the # key or the key programmed as TelephoneDisconnect.