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3 DMR function
Avoiding Interference with Other Communications (Busy Channel Lockout)
Type
Description
Operating the transceiver
Note
Configuration using FPU
Using a Channel Being Used by Other Parties (BCL Override)
Type
Description
Operating the transceiver
Note
Configuration using FPU
'■ Standard model
■ Basic model
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, the transceiver cannot transmit with
"BUSY" appearing on the display and a Warning Tone A (continuous beep) sounding from the transceiver at the
same time. The Warning Tone A (continuous beep) sounds from the transceiver until the PTT switch is released.
The following are conditions to disable transmission by Busy Channel Lockout:
Configuration
No
Busy Channel Lockout is disabled. Transmission is not restricted even if the
channel on which the transceiver attempts to transmit is busy.
Carrier Only
The transceiver cannot transmit while the transceiver is receiving a carrier.
Correct CC
The transceiver cannot transmit if the transceiver receives a carrier and the
received Color Code matches the Color Code preconfigured for the transceiver.
The transceiver transmits according to the configurations in Busy Channel Lockout and In-call Busy Channel
Lockout.
In-call Busy Channel Lockout is configured when audio can be emitted for a received call.
The following are the conditions to transmit and receive by In-call Busy Channel Lockout:
Configuration
Allow TX
If the PTT switch is pressed during a call, transmission is not restricted regardless
of the configuration in Busy Channel Lockout. However, if "Carrier Only" or
"Correct CC" is configured in Busy Channel Lockout and when the following
occurs, Busy Channel
Lockout functions:
When a call is started by a different type of call from the current incoming call
When a call is started with an ID that is different from the call ID used for the
Follow BCL
If the PTT switch is pressed during a call, transmission is restricted according to
the configuration in Busy Channel Lockout.
The current incoming call can be interrupted by pressing the PTT switch to
Interrupt CALL
respond (Talkback) while the transceiver is receiving an Individual Call, Group
Call, or Unaddressed Call to the own transceiver.
-
Busy Channel Lockout cannot be activated in Emergency Mode.
Busy Channel Lockout ： Edit > Zone Information > Channel Edit > DMR
In-call Busy Channel Lockout ： Edit > Zone Information > Channel Edit > DMR
'■ Standard model
■ Basic model
BCL Override is the function to transmit on a busy channel even if Busy Channel Lockout is activated and
transmission is restricted.
-
This function also works while the transceiver is transmitting using the VOX function.
For a transmission using VOX, Busy Channel Lockout is temporarily disabled and the transceiver can
transmit if audio is input within 500 ms after audio input terminates.
BCL Override ： Edit > Zone Information > Zone Edit - Conventional Group
Busy Channel Lockout
In-call Busy Channel Lockout
current incoming call
-
Press the PTT switch while transmission is restricted by Busy
Channel Lockout.
Release the PTT switch, then press the PTT switch again
within 500 ms.
Busy Channel Lockout is temporarily disabled, and the
transceiver starts transmitting.
22
Description
Description
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