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4 NXDN function
Participating in an On-going Voice Call Midway Through the Call (Late Entry)
Type
Description
Operating the transceiver
Note
Configuration using FPU
Restricting the Continuous Transmission Duration (Time-out Timer (TOT))
Type
Description
Operating the transceiver
Note
Configuration using FPU
Avoiding Interference with Other Communications (Busy Channel Lockout)
Type
Description
Operating the transceiver
Note
Configuration using FPU
'■ Standard model
■ Basic model
The transceiver can participate in an on-going voice call even if the transceiver receives this call midway
through.
The transceiver in an NXDN Conventional system can participate in an on-going voice call by decoding control
data always sent along with audio data, even if the transceiver receives a voice call midway through the call.
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'■ Standard model
■ Basic model
Time-out Timer (TOT) is the function to restrict the duration for the transceiver to continuously transmit.
This function is used to prevent a user from occupying a repeater or frequency which is shared with other users.
The transceiver automatically stops transmitting and releases the channel if it continuously transmits longer than
the configured time.
Time-out Timer can be configured for each zone.
Also, timers, such as TOT Pre-alert, TOT Rekey Time, and TOT Reset Time, relevant to Time-out Timer can
be configured.
TOT Pre-alert
TOT Pre-alert is the function to notify a user that a continuous transmission is about to end by the Time-out
Timer. A TOT Pre-alert Tone (3 beeps) sounds from the transceiver before the transceiver stops the
continuous transmission by the Time-out Timer.
TOT Rekey Time
TOT Rekey Time is the amount of time from when the transceiver stops the transmission by the Time-out
Timer until transmission becomes possible again.
TOT Reset Time
TOT Reset Time is the time required to initialize and reset the elapsed time for Time-out Timer.
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Time-out Timer (TOT), TOT Pre-alert, TOT Rekey Time, TOT Reset Time :
Edit > Zone Information > Zone Edit - Conventional Group
'■ 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.
Incorrect RAN
The transceiver cannot transmit if the transceiver receives a carrier and the
received RAN code does not match the RAN code preconfigured for the
transceiver.
Correct RAN
The transceiver cannot transmit if the transceiver receives a carrier and the
received RAN code matches the RAN code preconfigured for the transceiver.
Any RAN
The transceiver cannot transmit while receiving a RAN code.
The transceiver cannot be transmitting while receiving RAN code even if
transceiver receives the carrier.
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Busy Channel Lockout cannot be activated in Emergency Mode.
Busy Channel Lockout : Edit > Zone Information > Channel Edit > NXDN
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Busy Channel Lockout
Description
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