Lucent Technologies 5 manual Line/Trunk and Extension Modules, GS/LS-MLX Module

MERLIN LEGEND Communications System Release 5.0		Issue 1
System Manager’s Guide 555-650-118		June 1997
2 About the System
	Components	Page 2-21
	Line/Trunk and Extension Modules	2

The line/trunk and extension modules inserted into the control unit have jacks for connecting CO trunks and system telephone wires to the control unit.

A system with a basic carrier has five slots for modules. Up to two expansion carriers can be added, each one providing six slots for modules.

The system supports 17 different types of modules that vary in the types of lines/trunks that they support and the types of telephones or other equipment that can be connected to them.

The names of the modules identify their capacities and capabilities. The first digit tells you the number of line/trunk jacks a module supports, while the last two digits describe the number of extension jacks it supports. Following the number may be letters that indicate the type of trunk it supports, that is, LS for loop-startand GS for ground-start; if the number indicates line/trunk support and no letters follow, the module supports loop-start trunks. For example, the 408 GS/LS MLX module provides four line/trunk jacks and eight MLX extension jacks, and supports ground-start and loop-start trunks (see Figure 2–8).

408 GS/LS 4 GS or LS Outside Lines/ 8 Analog Telephones (ATL)

PFT Jack

Line/Trunk

Jacks

Digital (MLX)

Extension

Jacks

408

GS/LS-MLX

Figure 2–8. 408 GS/LS-MLX Module