Tyco Electronics P5300 Benutzerhandbuch

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In half-duplex mode, only one person may talk at a time. The radio PTT button needs 
to be pressed in order to communicate to the individual called and released for the 
individual called to be heard. 

1.  If the phone number is not stored in the pre-stored list of phone numbers, but the phone number is 

known, it can be entered directly from the keypad. Start by pressing the 

 key, then enter the 

required number from the keypad.  Press and release the PTT button. 

 

 

The last number directly entered can be recalled by first pressing 

 then pressing the 

PTT button. 

2.  A telephone ring can be heard from the speaker. When someone answers the phone, press and hold 

the PTT button and speak into the microphone. Release the PTT button to listen to the individual 
called. Unsuccessful interconnect signaling returns the radio to the normal receive mode and the 
number remains displayed until the special call is cleared or the time-out expires or another group or 
system is selected. 

3.  To terminate the call, momentarily press the   button. 

Once the radio has established a connection to the public telephone system, it may be necessary to “over-
dial” more digits to access banking services, answering machines, credit card calls, or other types of 
systems that require Dual-Tone Multi-Frequency (DTMF) access digits. 

Overdial operation can also be used to initiate a telephone interconnect call via DTMF signaling if a dial 
tone has already been accessed on the system. This method makes a telephone interconnect call while 
operating in the conventional mode but will also function in trunked mode if a dial tone is directly 
accessible. 

Telephone numbers and other number sequences for overdialing can be stored in the phone list when 
programming the radio. These numbers are accessed by pressing the 

 key, then following the selection 

mode rules. Perform the following procedures to access and dial these stored numbers. 

1.  Follow the procedure in Section 9.23.2 to establish a connection to the telephone system or consult 

the system administrator for the procedure to access a dial tone on the trunked or conventional 
system.  

2.  Enter selection mode first to enable entry of Overdial numbers by pressing the 

 button.  

3.  Follow the selection mode rules to call up a stored number from the phone list: Use the 

 or

 

buttons to scroll through the list of stored numbers.   is displayed. Press the PTT to send the overdial 
sequence once. If the number needs to be transmitted again it must be selected or entered again (this 
prevents unwanted numbers from being sent the next time the PTT button is pressed during the call).  

Overdial select/entry mode remains active until the call is dropped, cleared, or 

 is pressed. The 

overdial select/entry mode can be re-entered if the call is still active by pressing 

.