Toshiba Strata DK14 General Description Manual page 4

Contents
Chapter 3 - Strata DK424
DTMF/ABR Tone Detection Receiver (K5RCU and K5RCU2) ................................................... 12
Auto Attendant Feature Key (KKYS) ............................................................................................ 12
SMDR, SMDI, and Maintenance DKAdmin/Modem (TTY) Interface (TSIU)............................. 12
Power Supply.................................................................................................................................. 13
Power Failure Interface .................................................................................................................. 14
Music-on-Hold Interface ................................................................................................................ 14
Expansion KSU Architecture................................................................................................................ 14
Typical Line Configurations ................................................................................................................. 15
DK40i Line and Station Capacity................................................................................................... 15
Network Requirements.......................................................................................................................... 15
Functional Block Diagram .................................................................................................................... 16
System Technology............................................................................................................................... 17
Pulse Code Modulation .................................................................................................................. 17
Custom Electronic Circuitry........................................................................................................... 17
Stored Program Control.................................................................................................................. 17
Microprocessors.............................................................................................................................. 17
Maintenance and Programming ............................................................................................................ 17
DKAdmin/DKBackup .................................................................................................................... 17
Strata AirLink Wireless System............................................................................................................ 18
Chapter 3 - Strata DK424
Architecture........................................................................................................................................... 19
Base and Expansion Cabinets......................................................................................................... 19
Expansion and Configuration ......................................................................................................... 20
Expansion Cabinets ........................................................................................................................ 20
Printed Circuit Boards (PCBs) ....................................................................................................... 21
Maximum Line/Station Capacities........................................................................................................ 22
Power Requirements ............................................................................................................................. 26
Floor Mount Hardware.......................................................................................................................... 28
Functional Block Diagrams................................................................................................................... 29
System Technology............................................................................................................................... 32
Pulse Code Modulation .................................................................................................................. 32
Custom Electronic Circuitry........................................................................................................... 32
Stored Program Control.................................................................................................................. 32
Microprocessors.............................................................................................................................. 32
Maintenance and Programming ............................................................................................................ 32
DKAdmin/DKBackup .................................................................................................................... 32
Strata AirLink Wireless System............................................................................................................ 33
Chapter 4 - Universal Slot PCBs
Station PCBs ......................................................................................................................................... 35
Digital Telephone Interface Unit (PDKU2) ................................................................................... 35
Digital/Standard Telephone Interface Unit (RDSU) ...................................................................... 35
Strata AirLink Wireless Interface Unit (RWIU) ............................................................................ 36
CO Line/Digital Telephone Interface Unit (KCDU) (DK40i only) ............................................... 36
Electronic Telephone Interface Unit (PEKU) ................................................................................ 36
Standard/Electronic Telephone Interface Unit (PESU).................................................................. 36
Standard Telephone Interface Unit (RSTU2)................................................................................. 36
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