AT&T SYSTEM 25 Manual page 13

Lights
On the Selector Console, a
terminal is off-hook or that
On the Selector Console, a
from that voice terminal or
Switched Loop Attendant Consoles
Loop Buttons
Loops are the voice communications paths between the console and the system switch. The
Switched Loop Attendant Console gets its name from the system's ability to hold incoming
attendant-bound calls in a queue and switch them to the console by way of these voice loops.
Calls are directed to the console in a predetermined, prioritized sequence. The console
receives calls one at a time; while the attendant is busy with a call, any other calls will wait in
the queue until the attendant is ready to handle another. If there are two attendants, they
share the same queue.
All incoming calls are answered at the five
of the console. The loops are also used for calls placed from the console, although other
buttons (such as those on the Selector Console) maybe used to begin the calls.
Automatic Loop Selection
When an incoming call is ringing, lifting the handset (going off-hook) automatically connects
the attendant to the caller. If the attendant wants to place a call from an idle console, lifting
the handset causes one of the
call. The System Administration determines which
handset is lifted on an idle attendant console, since this is an administrable feature.
In a few situations, the attendant may need to press a
The console procedures will provide specific instructions when this is necessary.
Queue Status
The number of calls waiting in the SLAC queue is shown on the right side of the Screen 1
display. If between 1 and 9 calls are waiting for service, the actual number appears. A
queue of ten or more calls is indicated by " !".
steady red light indicates either that a voice
a call is parked on this extension.
flashing red light indicates a call to the attendant
an unanswered call returning to the console.
[LOOP]
buttons to become active (produce dial tone) for the
[LOOP]
buttons located on the upper left side
button becomes active when the
[LOOP]
button to answer or place a call.
[LOOP]
System 25 Voice Terminal Overview 1-9