44
Confidential
FUNC (K)/Ver. 1.01
15 LTR TRUNKING
An LTR Trunked Radio System is a multiple repeater
system that utilizes the LTR Trunking protocol.
In LTR Trunked Radio Systems, the transceiver
communicates with other parties via a repeater. In this
type of system, a user can communicate automatically
with other parties by using an available repeater channel.
Figure 15-1 LTR Trunked Radio System
The following data format is used to transmit and receive
LTR data between a repeater and a transceiver.
Figure 15-2 LTR Data Format
The transceiver uses the LTR ID (Group ID) to make a
call to the receiving party. A user can communicate if the
transmitting party’s Encode ID matches the receiving
party’s Decode ID.
Figure 15-3 Communication in LTR Trunked
Radio System
15.1 Zone
The following functions relevant to an LTR Trunked Radio
System Zone can be configured by using KPG-101D:
• Zone Name
• Scan Weight
• Wide/ Narrow
• Data Zone-CH/GID
• Data Delay Time
• Home GID
• Operator Selectable Home-GID
• Time-out Timer (Dispatch)
• Time-out Timer (Telephone)
• Audio Control
• Encode Data Type
• Zone Add
• Scan List
• Auto Telephone Search
• Talk Around Busy Channel Lockout
• Talk Around Key
• Fix ID
• Telephone (Block ID)
• Transmit Inhibit (Block ID)
• Decode ID (Block ID)
15.1.1 Zone Name
Zone Name can be used to assign a name to a zone.
(Refer to 3.4.1 Zone Name on page 15.)
Zone Name can be configured by using KPG-101D.
Configuration using KPG-101D
• Configuring the Zone Name (Refer to FPRG 6.3.1
Zone Name.)
Sync
9
Area
1
Go to
Channel
5
Home
Channel
5
ID
8
Free
Channel
5
CRC
7
(40-bit @ 3.36 ms for 134.4 ms frame)
Transceiver 1
Transceiver 2
Repeater
Transmit
Frequency
Receive
Frequency
Repeater
Transceiver 3
Decode ID = 20
Transceiver 2
Decode ID = 10
Transceiver 4
Decode ID = 10
Transceiver 1
Encode ID = 10
ID=10
ID=10
ID=10
ID=10
