Instruction manual

Strata DK424i
Functional Block Diagrams
36 Strata DK General Description 6/00
Figure 13 CO Line Side Functional Block Diagram
RDTU2
• 2T1 / DS1(24 Channels / Lines)
• Loop Start, Ground Start, Tie, DID
• Digital Voice Lines
Channel
Service
Unit (CSU)
25-pair Amphenol
TOSHIBA NDTU Cable
DB15
PLL Synchronization Circuits
2
RCOU
4 Loop Start Co Lines (Analog)
RGLU2
4 Loop or Ground Start CO Lines (Analog)
RCOS (Optional PCB on RCOU Only):
4 Loop Start CO Lines (Analog)
RCIU2
RCIS
4 Caller ID Circuits
4 Caller ID Circuits
(Two 4-Wire Modular Jacks)
MDF
(Two 4-Wire Modular Jacks)
(Two 4-Wire Modular Jacks)
(Two 4-Wire Modular Jacks)
(Two 4-Wire Modular Jacks)
1
RDDU
4 DID CO Lines (Analog)
REMU
4 E&M Tie Lines (Analog)
(REMU, Four 8-Wire Modular Jacks)
(Two 4-Wire Modular Jacks)
Secondary Protectors
2
RPTU
ISDN PRI (23B+1D channels)
Digital Voice/Data
Toshiba RPRI-CBL-KIT
Channel
Service
Unit (CSU)
8-wire Modular Jacks
2
ISDN BRI (U)
2 Circuits (NT-1 )
Voice/Data (2B+D)
RBUU
RBUS ISDN BRI (U)
2 Circuits (NT-1)
Voice/Data (2B+D)
U
4
U
4
8-wire Modular Jacks
8-wire Modular Jacks
3
3
ISDN BRI (S/T)
2 Circuits (TE)
Voice/Data (2B+D)
RBSU
NT1 per circuit
2
U
4
T
4
8-wire Modular Jacks
RMCU
Trunk Circuits for E911
RCMS 2 Trunk Circuits
RCMS 2 Trunk Circuits
CAMA Line (2-wire Modular Jacks)
CAMA Line (2-wire Modular Jacks)
Network Demarcation Point
Remote Location(s)
Remote Location(s)
BVPU
Voice Over IP Unit (4 Circuits)
PDKU
RRCU
Remote Cabinet Interface Card
Optical Fiber Cable 3 km/(1.86 mi.)
Expansion
Cabinets
Digital
Telephone
10BaseT
Router
MCK
Extender
MCK
Gateway
IP Network
4272
Central Office
Centrex
PBX
Common Carrier
Other Telephone System
E911 Public Safety Answer
Point (PSAP)
•
•
•
•
•
•
1. RCIU2/RCIS tip/ring cross
connected to RCOU, RCOS, or
RGLU tip/ring at MDF.
2. Customer-supplied equipment.
3. RBUU/RBUS (Release 4.3).
4. U, S, T, R are ISDN reference
model termination points.
Data and Speech Highway