30
English
R
ADIO
CALLS
DTMF
DTMF means Dual Tone Multi Frequency and
is used when the radio is required to operate in
a radio system with an interface to telephone
systems.
There are two methods of accessing DTMF
Live Dial Mode:
Automatic/Manual
To do this, your radio must send a telephone
interconnect to a station that connects you to a
phone line. After you have finished your call, the
radio sends a clear down call (if programmed) to
shutdown the connection to the phone line.
Sending the Telephone Interconnect Call
Your radio can be programmed to send the
interconnect call in one of the following ways:
•
automatically - when a call button
(Call 1 - 4 or PTT) has been programmed with
the interconnect call, or a contact list entry has
been programmed for DTMF access.
•
manually - when you dial the code using
the keypad
If in doubt, please contact your dealer or network
manager for further information.
To initiate a DTMF call with Automatic
Telephone Interconnect Call
1
Press dedicated Call Button (Call 1-4 or PTT),
you will hear a tone sequence.
Display icon lit:
D
2
Wait for call to be set up when you will hear a
dial tone.
Display shows:
3
Enter desired phone number, taking care not
to press the PTT.
Note: Each DTMF digit is transmitted instantly.
Display shows
entered digits:
4
Once the radio has connected to the called
number, you can begin the conversation. Even
though this is a phone call, your conversation
mimics a radio call, that means that both
parties speak in turn, i.e. press the PTT to talk,
release to listen.
Enter Digits
8116
