Clear-Com HLI-FBS - Manual (Page 37)

4 Linking Main Stations
This chapter describes how to link Main Stations to create a party line system that has more than four
channels and more than 20 beltpacks. You can connect Main Stations directly or over a LAN via Ethernet.
Main Station linking is achieved using interface modules fitted to the extension bay of the Main Station.
There are two modules:
• Ethernet interface module (HLI-ET2). This module provides an Ethernet connection between
Main Stations.
• Fiber interface module (HLI-FBS). This module provides a Fiber connection between Main
Stations.
Each Main Stations has four channels, and can connect up to 20 beltpacks.
Warning: Both ports are configured to bridge traffic from one port to the other in order
to work in daisy-chain. Spanning Tree Protocol is not enabled on those ports, therefore
do not connect them both to the same network..
4.1 Linking scenarios
Main Stations are connected together using CAT, CAT5e or CAT6 shielded cable. There are various
topologies that you can create. Some of these are illustrated below.
35 HelixNet Partyline User Guide