Instruction manual

Contents
viii 025-9416
VOICE CAPABILITIES ...........................................................................................10
TELEPHONE INTERFACES ..................................................................................11
TRANSMITTER INTERFACE ...............................................................................11
SYSTEM MANAGEMENT......................................................................................12
TNPP INTERFACE (Optional) ................................................................................12
TAP Inbound (Optional)............................................................................................13
TAP Outdial (Optional) .............................................................................................13
HARDWARE OVERVIEW
MODEL 640 ARCHITECTURE ..............................................................................15
OPERATING POWER..............................................................................................16
MAIN PROCESSOR MOTHERBOARD ...............................................................17
Paging Terminal Timing ...............................................................................................................17
PCM Highway ...............................................................................................................................17
Voice Prompts And Storage ..........................................................................................................17
DRAM Memory.............................................................................................................................18
Maintenance Modem.....................................................................................................................18
Expansion Slots..............................................................................................................................18
External Hardware Interfaces .....................................................................................................18
Jumper Settings.............................................................................................................................18
PERIPHERAL MOTHERBOARD..........................................................................20
Trunk Card Slots...........................................................................................................................20
Trunk And Radio Station Interface .............................................................................................20
Adjustment Pots ............................................................................................................................21
Jumper Settings.............................................................................................................................21
DUAL TRUNK INTERFACE BOARD ...................................................................22
Line Type Matrix Card.................................................................................................................22
External RS-232 Ports ..................................................................................................................23
Modem Interfaces..........................................................................................................................23
Audio Level Adjustments..............................................................................................................23
DID Trunk Configuration.............................................................................................................24
End-to-End Trunk Configuration................................................................................................25
Ground Start Trunk Configuration .............................................................................................25
E&M Trunk Configurations.........................................................................................................25
DUAL TRUNK 4-WIRE AUDIO INTERFACE BOARD......................................26
ROM DISK BOARD..................................................................................................27
Jumper Settings.............................................................................................................................27
RAM DISK BOARD..................................................................................................28
Jumper Settings.............................................................................................................................28
TNPP INTERFACE ...................................................................................................28
TAP Inbound..................................................................................................................................28
TAP Outdial ...................................................................................................................................28