4 NXDN function
72
Participating in an On-going Voice Call Midway Through the Call (
Late Entry
)
Type
‘
■
Standard model
■
Basic model
Description
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.
Operating the transceiver
-
-
Note
-
Configuration using FPU
-
Restricting the Continuous Transmission Duration (
Time-out Timer (TOT)
)
Type
‘
■
Standard model
■
Basic model
Description
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
.
Operating the transceiver
-
-
Note
-
Configuration using FPU
Time-out Timer (TOT)
,
TOT Pre-alert
,
TOT Rekey Time
,
TOT Reset Time
:
Edit > Zone Information > Zone Edit - Conventional Group
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, 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:
Busy Channel Lockout
Configuration
Description
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.
Operating the transceiver
-
-
Note
Busy Channel Lockout
cannot be activated in Emergency Mode.
Configuration using FPU
Busy Channel Lockout
: Edit > Zone Information > Channel Edit > NXDN
