Direct Ringing . . . . . . . . . . . . . . 3-59
Direct Station
Call Hold (Station Park)
. . . . . . . . A-30
Direct Station
Selection (DSS) Programmable . . . . . A-30
Disable A Station . . . . . . . . . . . . 3-74
Disable A Line
. . . . . . . . . . . . . 3-37
Disable Call Waiting Tone . . . . . . .
3-104
Discard Digits . . . . . . . . . . . . .
3-129
Display of Costed Calls . . . . . . . .
3-131
Distinctive Ringing . . . . . . . . 3-95, A-30
DIU . . . . . . . . . . . . . . . . . . . . 1-6
DND Button . . . . . . . . . . . . . . . 3-83
Do Not Disturb . . . . . . . . . . . . . A-30
Do Not Disturb Inhibit
. . . . . . . . . A-31
Do Not Disturb Override . . . . . . . . A-31
Do Not Disturb (DND) . . . . . . . . . 3-19
Do Not Disturb (DND) Button . . . . . 3-83
DSS/BLF Button . . . . . . . . . . . . 3-83
DSS/BLF Consoles, Installing
. . . . . 2-26
DSS/BLF, Programmable . . . . . . . .
A-6
DTMF Tones For Automatic Dialing . . 3-33
Dual Console Feature . . . . . . . . . . 3-57
Dual Intercom . . . . . . . . . . . . . . A-31
DVA . . . . . . . . . . . . . . . . . 1-6, 2-78
Dynamic Line Buttons
. . . . . . . . . A-32
E
Enable Call Waiting Tone . . . . . . . 3-104
End-To-End Signaling . . . . . . . . . . A-32
End-To-End Signaling On Intercom . . . A-32
End-To-End Signaling On Lines . . . . . A-32
Equipment Interface, Auxiliary . . . . . A-8
Exception Tables . . . . . . . . . . . . 3-123
SMDA Call Report For
The Call Costing Examples . . . . . . 3-122
Exclusive Hold . . . . . . . . . . . 3-20, A-32
Executive Override
. . . . . . . . . . . 3-58
Executive/Attendant Override . . . . . . A-33
Expansion Capabilities
. . . . . . . . . 2-42
Expansion Module . . . . . . . . . . . . 2-41
Expansion Module,
Connecting Stations To . . . . . . . . . 2-43
Expansion Module, Installing . . . . . . 2-44
Extended DTMF
Tones For Automatic Dialing . . . . . . 3-33
System Alarm Report Stations . . . . . . 3-77
External
Paging Interface . . . . . . . 2-32 – 33, A-33
F
Failures, Isolating . . . . . . . . . . . . 2-53
FCC Registration Numbers . . . . . . . . 2-5
FCC Rules And Regulations . . . . . . . 2-80
Feature Codes . . . . . . . . . . . . . . 1-23
Feature Inhibit . . . . . . . . . . . . . . A-33
Features, Station . . . . . . . . . . . . . 3-47
IMI66–107
Digital Telephone System
Index – 5
Summary of Contents for Air Impact DSU
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