AT&T MERLIN LEGEND Release 2.0 Equipment And Operations Manual page 43

Introduction
Line Access
In Key mode (whether strapped and/or programmed), each outside line must be
assigned to a line button on at least one telephone. As a result, the telephones
most commonly used in Key mode are multibutton telephones. See Figure 1-3.
Telephone # 1
Figure 1-3. Lines Labeled for Key System Telephones
A user selects an outside line by pressing a personal line button-a button
labeled with a telephone number. Upon hearing dial tone, the user can dial out.
When a line is in use, the green LED goes on next to the corresponding
personal line button on any telephones that share that personal line.
The telephones in a Key system also have Intercom buttons, labeled ICOM, that
allow users to make and receive calls to and from other extensions within the
system. An inside talk path is provided when an ICOM button is pressed. The
user hears a system dial tone, which can be programmed to sound different
from outside dial tone. The factory setting is to provide a different internal dial
tone.
Telephone # 2
Modes of Operation
3
Telephone #
1-15