Kenwood NEXEDGE NX-200 Function Reference page 228

9 NXDN TRUNKING SYSTEM
9.2 Control Channel Hunt
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. The
TOT Pre-alert Tone sounds from the transceiver before the transceiver stops the continuous transmission by the Time-out
Timer.
Example: Time-out Timer: 30 s, TOT Pre-alert: 4 s
Note
If "Off" is configured for TOT Pre-alert, no TOT Pre-alert tone will sound from the transceiver.
Configuration using KPG-111D/ DN
• Configuring the Time-out Timer (
• Configuring the TOT Pre-alert (
9.2 Control Channel Hunt
The control channel hunt is the function to search for and acquire automatically an available control channel on a system
when the transceiver is turned ON.
By searching for a control channel according to the hunt sequence, the transceiver can acquire a control channel providing
better communication conditions, such as a control channel having better signal strength or higher priority.
The control channel hunt is automatically started when the transceiver is in the following states.
• When the transceiver is turned ON
• When an NXDN Trunking zone in another system from the current system is selected
• When the transceiver cannot receive a signal on a control channel
• When the transceiver receives a DISC message on a traffic channel
Order Hunt Sequence
Resuming a Control Channel
1
Sequence
2 Preferential Hunt Sequence
3 Normal Hunt Sequence
4 System Add Channel Sequence
FUNC (K)/Ver 4.00
PTT Transmit
Press
TOT
Count Start
TOT
Pre-alert
TOT Pre alert Alert Start
Tone
Time 0 s 26 s
Figure 9-3 TOT Pre-alert
FPRG 8.8.4 Time-out Timer (TOT))
See
FPRG 8.8.5 TOT Pre-alert)
See
Table 9-2 Hunt Sequence
The control channel search which was stopped before the transceiver was turned
OFF is resumed.
2 channels configured as Preferential Hunt Control Channel are searched.
Preferential Hunt Control Channel is the channel having the highest priority when
searching for a control channel.
A channel configured as Normal Hunt Control Channel is searched. Normal Hunt
Control Channel is a channel that can be used as a control channel in each site.
48 channels that are additionally registered by a broadcast message sent from the
system are searched.
Transmit End
Release
Expire TOT
Alert End
30 s
Description
CONTENTS INDEX 194