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MERLIN LEGEND Communications System Release 6.0
System Manager’s Guide
555-660-118
Issue 1
February 1998
About the System
Page 2-17Modes of Operation
2
Table 2–1. Modes of Operation
Key Mode Hybrid/PBX Mode Behind Switch Mode
Description 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.
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.
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.
Types of Trunks Ground-start
Loop-start
Tie
DS1 (T1 only)
BRI
Ground-start
Loop-start
Tie
DS1 (PRI and T1)
DID
BRI
Private network trunks
(Release 6.0 and later)
Ground-start
Loop-start
Tie
Number of
Extensions:
Fewer than 50
More than 50
Good
Not recommended
Good
Good
Good
Good up to 80
Types of Buttons A line button for each
outside line.
Up to 10 ICOM buttons for
inside calls.
Up to 10 SA buttons.
Pool button to access a
specific pool. (Optional) A
personal line button for
dedicated use of a
specific outside trunk.
For multiline phones:
Multiple prime line buttons.
Up to 10 ICOM buttons.
User Access to
Outside
Lines/Trunks
Choosing a specific line
button
Dialing a code (usually
)
from an SA button
Dialing the host system’s
dial-out code (usually
)
from a prime line button
Types of Operator
Console(s)
DLCs only DLC, QCC, or a
combination of both
DLCs only
Recommended
Use
Smaller systems (fewer
than 50 extensions)
Medium to larger systems
(more than 50 extensions)
For users who are part of a
large organization, for
example, a department
within a company or
companies which
subscribe to Centrex
services for most features
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