AT&T SYSTEM 25 Manual page 12

Line Selection
If a multiline voice terminal automatically selects a line when a user lifts the handset to place
a call, it has the option called "prime line preference. " If a terminal automatically selects the
ringing line when the handset is lifted to answer a call, it has the option called "ringing line
preference."
The procedures in this manual assume the user's voice terminal has both ringing line
preference and prime line preference (on a System Access button). If a terminal does not
have these options, the user must press the appropriate line button at the beginning of most
procedures.
Finally, a user may select any line before or after picking up the handset by pressing the
button associated with the desired line.
In most instances, if another line is selected without putting an existing
NOTE:
conversation on hold, the first call will be dropped.
Attendant Consoles
Two types of attendant consoles are available with System 25:
Direct Trunk Attendant Consoles (DTACs)
Switched Loop Attendant Consoles (SLACs)
A SLAC or DTAC can be used with or without a Direct Extension Selector Console. The
setup used will depend on the size and needs of the company.
Features
An attendant can use most of the features available to other multiline voice terminal users.
In addition, the attendant has access to special call-handling features which are described in
the "Attendant Features" section.
Direct Extension Selector Consoles
The Selector Console, which allows the attendant to call an inside number by pressing only
one or two buttons instead of dialing all the digits. These buttons are identified and
described below.
GROUP SELECTION BUTTONS (the first seven buttons located on the bottom row)
Used for selecting the "hundreds group" of each extension number. The last button on
the right is used for testing the console.
It is a good idea to label the seven Group Select buttons. The plastic caps
NOTE:
can be pulled off temporarily to insert labels.
DIRECT EXTENSION SELECTION (DXS) BUTTONS (located directly above the Group
Select buttons)
Used for selecting specific extension numbers from the hundreds group. (The numbering
for this group of buttons is fixed from 00 to 99.)
1-8 Introduction