Modes Of Operation - Lucent Technologies MERLIN LEGEND Release 7.0 System Manager's Quick Reference

MERLIN LEGEND Communications System R7.0
System Manager's Quick Reference 555-670-119
Getting Started
System Overview

Modes of Operation

The system operates in one of three modes:
• Key Mode. The simplest way to provide people with more than one line
from a telephone. Easy to use. Recommended for smaller systems.
• Hybrid/PBX Mode. Especially useful where toll fraud/security are a
concern. Provides cost-effective call routing, especially useful for
special-purpose network services. Recommended for medium to larger
systems.
• Behind Switch Mode. Used when the system is connected to a system
such as DEFINITY. May be appropriate for users who are part of a large
organization—for example, a department within a company.
The following table outlines the primary differences among the modes.
Modes of Operation
Description
Key Mode
Telephones have
multiple buttons
(or keys) labeled
with telephone
numbers.
Every button
corresponds
directly to an
outside line.
Different buttons
(ICOM buttons)
are used for inside
calls.
Hybrid/PBX Mode
Outside trunks are
grouped in pools
for shared use; the
system
automatically
selects an
available outside
trunk.
People use the
same button to
make both inside
and outside calls.
Issue 1
April 1999
Behind Switch
Mode
Used when the
system (called the
local system) is
connected to a
larger PBX or
Centrex system
(called the host
system).
One outside line (a
prime line) is
assigned to each
telephone. The host
system provides the
interface to outside
lines and some
features.
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