Teledesign Systems Inc TS4000EH Manuel D’Utilisation
TS4000 Radio Modem User’s Manual
AirNet Packet Protocol
52
A chain repeater topology is one where the messages are passed down a chain of
repeaters. This is typical for systems that operate along a road, river or railroad
track.
For the specific configurations defined in this example, the base and each repeater
must hear only the next repeater in the chain. For example: Repeater B hears only
Repeater A and C but not the Base and Repeater D.
repeaters. This is typical for systems that operate along a road, river or railroad
track.
For the specific configurations defined in this example, the base and each repeater
must hear only the next repeater in the chain. For example: Repeater B hears only
Repeater A and C but not the Base and Repeater D.
Remote
Polling Host
Base
Repeater B
Remote
Remote
Repeater A
Remote
Remote
Repeater C
Repeater D
Remote
Configuration Parameter
Setting
All Units
Enable Packet Operation
Checked
Medium Access Control (MAC)
CSMA
Store and Forward Repeater Operation: Repeater Filtering
Address
Default Transfer
Network Broadcast
CSMA MAC Setup: Data Packets: Tx Index
1
CSMA MAC Setup: Relay Packets: Tx Index
1
Modem Address: Group
1
Base Site
Modem Address: Individual
1
CSMA MAC Setup: Data Pkts: Min Idle Slots
5
Repeater A Site
Modem Address: Individual
2
CSMA MAC Setup: Data Pkts: Min Idle Slots
4
CSMA MAC Setup: Relay Pkts: Min Idle Slots
0
Store and Forward Repeater Operation: All Packets
Relay All
Chain Repeater
System
System