Type Of System - AT&T Merlin II Release 3 System Manual

Type of System

SQUARE (NONPOOLED)
2-2 Type of System
The type of system selected affects how you handle calls and how you use
certain features. The figures below show the three system types (Square,
Behind-Switch, and Pooled) and their options. Section 3, "Reference,"
identifies how to handle calls and features that are affected by the system
type you're using.
The system types and their options are as follows:
Square. Each line appears on a separate button. Square systems can be
standard or customized.
Behind-Switch. The MERLIN II system operates behind a larger system
such as a PBX. Lines appear on separate buttons.
Pooled. Interchangeable lines (e.g. WATS) are grouped into line pools.
There are three options with pooled systems:
Button Access. You select a line pool by touching its button.
Dial Access. You select a line pool by dialing its code.
Automatic Route Selection (ARS). The system places a call on the line
identified as the most appropriate for that call.
In a square system, each line appears on a separate button on each phone.
This arrangement simplifies call handling because people can join calls or pick
up calls on hold just by touching the appropriate line button on almost any
phone.
In the standard configuration, all phones have access to the same lines on the
same buttons. See Figure 2-2.
FIGURE 2-2 Example of a standard square (nonpooled) system.
MERLIN II
System Control Unit
Line Line Line Line
A B C D
Standard