Instruction manual

Chapter 3 Operation 23
DTMF ANI
Typically, in DTMF ANI, the PTT ID and the Emergency ID are
different so the base decoder can determine what is an emergency
message. Systems using dispatch consoles generally define a
DTMF PTT ID as a number beginning with a 1 and DTMF
Emergency ID’s begin with a 7. The length of a DTMF character is
programmable 25 mS through 1000 mS in 25 mS steps. The pause
between DTMF characters is programmable 25 mS through 1000
mS in 25 mS steps. DTMF ANI can be programmed for up to eight
digits.
MDC-1200® Radio Check
To send a radio check, press the <A> button until ―CHECK‖ appears
in the display then press the <B> button to select the target radio. If
an alias table is present, the radio enters the alias mode of ID
selection. If there is no alias table, any valid ID can be entered. If
you desire to enter an ID instead of the alias, press and hold the <B>
button for longer than 2 seconds. Refer to page 28 for more
information. If an error is made in the ID entry, continue to fill out
the four character ID and then press <C> and reenter the ID. After
the ID is entered, momentarily press the radio PTT to send the
message. Data is sent and then the radio unkeys. If an
acknowledgment is received from the target radio, the display
changes to —ACK—. If no acknowledgment is received in five
seconds, the display changes to alternating between the target ID (or
Alias) and —NAC— for five seconds. If the target ID that was
entered contains ―wildcards‖ signifying that it is a group or all-call, the
acknowledge bit in the signaling packet will be cleared and no ACK
will be expected. ID’s that contain E or F can be entered by pressing
* for E and # for F.
If the radio receives a radio check command with a matching ID, the
radio shows no indication of being checked except that the TX led
may illuminate. The radio will send the appropriate acknowledgment
to the requesting radio.