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If the PTT switch is pressed before the CALL switch, the call is transmitted as a 
group call.

If private calls are not permitted (CALL switch not programmed) press the RESP 
(Call Response) option switch to respond.

The call must be answered within 20 seconds or it is automatically terminated.

If the system is busy when a response is made, “BUSY” is displayed and the busy 
tone sounds.

The telephone call feature allows telephone calls to be placed and received over the public 
telephone system using your radio. The type of call (secure/clear) is determined by the 
mode selected by the C/S (Clear/Secure) option switch. Telephone calling is programmed 
to operate in one of the following modes:

• Disabled (telephone calls not available).

• Answer-only capability.

• List only - Telephone numbers can be selected from a preprogrammed list only (direct 

entry as follows is not allowed).

• Unlimited - Telephone numbers can be selected from a list and also dialed directly 

entered using the front panel controls or the keypad on the HHC.

To recall from a list:

1 With a SMARTNET/SmartZone channel selected, momentarily press the PHONE 

option switch. The tag (alias) of the last called telephone number is displayed.

2 If required, rotate the Select switch to display the desired number. The tag of each 

number is displayed.

3 Press and then release the PTT switch and “DIALING” is displayed. Refer to the 

bulleted list following step 6 in the next section for events that may then occur.

To make a direct entry using DTMF keypad:

1 Press and hold the PHONE option switch until a tone sounds (approximately 1 second). 

The alias of the last called telephone number is displayed if it is in the phone number 
list. Otherwise, the last ten digits of the last called telephone number are displayed. The 
phone call mode is indicated by 

 in the display.