INCOMING CALL IDENTIFICATION
Eight non-locking keys with associated lamps provide the attendant access to specific types of incoming calls.
A flashing red lamp indicates a call waiting to be answered. A steady red lamp indicates a call answered.
The standard arrangement of these keys is shown on the face layout:
LDN (Listed Directory Number)
Incoming central office trunk call.
TIE (Tie Line)
Allows the attendant to answer incoming tie line calls when the distant station dials an access code for the
attendant.
BUSY (Call Forward Busy Line)
Allows the attendant to answer incoming calls to a specified station when the station is busy.
ATND (Attendant)
Incoming internal station call.
NANS (Call Forwarding No Answer)
Allows the attendant to answer incoming calls to a specified station when the station does not answer within
the predetermined time.
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