User`s guide

Square systems
Pooled systems
with Dial Access
to line pools
FIGURE 3-3 Dial Codes for using a Basic Telephone connected to a BTMI-2 or OPTI
Behind-Switch Operation
DESCRIPTION
The MERLIN II system can be administered to operate behind another
system, such as a PBX or Centrex system. A system administered for
behind-switch operation has several characteristics that distinguish it from
other system types, as shown below.
Lines
When a behind-switch system is first set up, the system assigns lines as
follows:
● At all nonattendant stations, the system assigns a single prime line. This
line rings immediately for incoming calls. You are always connected to
this line (even when it is busy), unless you manually select a different
line. You can administer additional, secondary lines to the phone.
Secondary lines are factory-set for delayed ring.
● At attendant consoles, the system assigns all the outside lines to the
console. The first line is the prime line, and the rest are secondary lines.
These lines are assigned to buttons in the same order as lines assigned to
attendant consoles in other types of systems. By default, the prime line is
set for immediate ring and the secondary lines for delayed ring.
The factory-set line assignments and ringing options can be changed. For
example, if there are two or more standard attendant consoles, the additional
consoles must be readministered so that each has a unique prime line.
MERLIN II System Features
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