Bell 801A PBX Method Of Operation page 33

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TABLE I (Cont)
OUTGOING CENTRAL OFFICE TRUNK CALL
CONDITION RESULTS
CONSOLE A CONSOLE B
S
T
ACTION
KEY LAMPS
REMARKS
LAMPS
E
P
DESIG OPR
CO ATND CO
ATND
TRK TRK
TRK TRK
Call to Central Office From a Restricted PBX Station
10
At PBX station -
e e
PBX dial tone heard
e e
Remove handset from switchhook
*
PBX dial tone silenced
*
11
Dial CO trunk access code
e
CD
Audible ringing tone heard
e
CD
At atnd console-
Audible signal heard.
12 At PBX station -
e e
e e
Disconnect from call
Attendant Calls Central Office
13
Atnd seizes idle CO trunk
CO
0
e
CO dial tone heard by atnd
0
e
TRK
0
14
Atnd dials number of local CO party
0
e
Dial tone silenced
0
e
Audible ringing tone heard
Audible ringing tone silenced
15 CO party answers
0
e
Conversation satisfactory between
0
e
attendant and CO party
16 Atnd and CO disconnect
POS
0
e e
Console restored to idle condition
e e
RLS
Call to Central Office From a PBX Station - All Central Office Trunks Busy
17 At PBX station-
0
e
PBX dial tone heard
0
e
Remove handset from switchhook
Dial CO trunk access code
0
e
PBX dial tone silenced
0
e
18
Busy tone heard
19 Disconnect from call
0
e
0
e
*
Only the A TND TRK lamp on the console to which the intercept is steered will flash.
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