5 ANALOG function
106
Optional Signaling (Analog)
Type
‘
■
Standard model
■
Basic model
Description
Optional Signaling is the signaling used to initiate a selective call. DTMF, 2-tone, FleetSync, and MDC-1200 are
the Optional
Signaling which can be used in an Analog Conventional system. All these types of signaling make use of audio
bandwidths.
The transceiver behaves as follows according to the configuration for
Optional Signaling Decode Condition
.
When Optional Signaling Decode Condition is configured to “QT/DQT”:
When the QT tone or DQT code matches, and the Optional Signaling on standby matches with the received
Optional Signaling, the transceiver outputs an Alert Tone and starts Transpond.
When Optional Signaling Decode Condition is configured to “Carrier”:
When the transceiver receives a carrier and the Optional Signaling on standby matches with that received, the
transceiver outputs an Alert Tone and starts Transpond. In this case, matching of the QT tone or DQT code is not
required.
The transceiver behaves as follows according to the type of a received signal on a channel with “Mixed”
configured in
Channel Type
.
0 If the transceiver receives analog signals
The transceiver behaves according to the configuration in Optional Signaling (Analog).
Operating the transceiver
-
-
Note
-
Configuration using FPU
Optional Signaling
: Edit > Zone Information > Channel Edit > Analog
Optional Signaling Decode Condition
: Edit > Zone Information > Zone Edit
Channel Type
: Edit > Zone Information > Channel Edit > General
Indication and Display (
Selective Call Alert LED
)
Type
‘
■
Standard model
■
Basic model
Description
Selective Call Alert LED
is the function to make the LED flash when the transceiver receives a DTMF code or a
Selective Call.
A user can tell from the flashing LED that the transceiver is receiving a call.
Operating the transceiver
-
-
Note
-
Configuration using FPU
Selective Call Alert LED
:
Edit > DTMF > Decode
Edit > 2-tone > Decode (2-tone 1 to 4)
Edit > FleetSync > General 2
Edit > MDC-1200 > General 2 > Selcall
Avoiding Interference with Other Communications (
Busy Channel Lockout
)
Type
‘
■
Standard model
■
Basic model
Description
Busy Channel Lockout
is the function to automatically restrict the transmission so as not to interfere with other
communications.
If an attempt is made to transmit on a channel that is already being used by other groups, the transceiver
automatically restricts the transmission.
If the
PTT
switch is pressed while
Busy Channel Lockout
is enabled, a Warning Tone A (continuous beep)
sounds from the transceiv
er, and transmission is disabled. In this case, “Busy” appears on the display. The
Warning Tone A sounds from the transceiver until the
PTT
switch is released.
The following are conditions to disable transmission by
Busy Channel Lockout
:
Busy Channel Lockout
Configuration
Description
No
Auto Reset Timer
does not function.
Carrier Only
The transceiver cannot transmit while the transceiver is receiving a carrier.
Incorrect Tone
The transceiver cannot transmit if the transceiver receives a carrier and the
received QT tone or DQT code does not match the QT tone or DQT code
preconfigured for the transceiver. However, the transceiver can transmit if the
received QT tone or DQT code matches the QT tone or DQT code preconfigured
for the transceiver.
Optional Signaling
Transmission by the transceiver is not allowed until the Optional Signaling
received matches the Optional Signaling configured for the transceiver.
The transceiver is controlled in the following manner according to the configuration for
Transmit Mode
on a
channel with
“
Mixed” configured in
Channel Type
.
Operating the transceiver
-
-
Note
Busy Channel Lockout
cannot be activated in Emergency Mode.
Configuration using FPU
Busy Channel Lockout
: Edit > Zone Information > Channel Edit > Analog
Channel Type, Transmit Mode
: Edit > Zone Information > Channel Edit > General
