Toshiba Strata DK14 General Description Manual page 44
Digital business telephone solutions
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Also See for Strata DK14:
- Installation and maintenance manual (724 pages) ,
- Programming manual (424 pages) ,
- System administrator manual (56 pages)
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Strata DK424
Functional Block Diagrams
•
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 4.2).
4. U, S, T, R are ISDN reference
model termination points.
Figure 13
CO Line Side Functional Block Diagram
30
Network Demarcation Point
1
MDF
Secondary Protectors
(REMU, Four 8-Wire Modular Jacks)
25-pair Amphenol
TOSHIBA NDTU Cable
DB15
Channel
Service
Unit (CSU)
CAMA Line (2-wire Modular Jacks)
CAMA Line (2-wire Modular Jacks)
Toshiba RPRI-CBL-KIT
Channel
Service
Unit (CSU)
2
NT1 per circuit
4
4
U
T
4
U
4
U
RCIU2
(Two 4-Wire Modular Jacks)
RCIS
(Two 4-Wire Modular Jacks)
RCOU
4 Loop Start Co Lines (Analog)
(Two 4-Wire Modular Jacks)
RCOS
(Two 4-Wire Modular Jacks)
4 Loop Start CO Lines (Analog)
RGLU2
4 Loop or Ground Start CO Lines (Analog)
(Two 4-Wire Modular Jacks)
RDDU
(Two 4-Wire Modular Jacks)
REMU
2
4 E&M Tie Lines (Analog)
RDTU2
• 2T1 / DS1(24 Channels / Lines)
• Loop Start, Ground Start, Tie, DID
• Digital Voice Lines
2
PLL Synchronization Circuits
RMCU
RCMS 2 Trunk Circuits
RCMS 2 Trunk Circuits
RPTU
2
8-wire Modular Jacks
RBSU
8-wire Modular Jacks
RBUU
8-wire Modular Jacks
RBUS
8-wire Modular Jacks
4 Caller ID Circuits
4 Caller ID Circuits
(Optional PCB on RCOU Only):
4 DID CO Lines (Analog)
Trunk Circuits for E911
ISDN PRI (23B+1D channels)
Digital Voice/Data
ISDN BRI (S/T)
2 Circuits (TE)
Voice/Data (2B+D)
3
ISDN BRI (U)
2 Circuits (NT-1 )
Voice/Data (2B+D)
3
ISDN BRI (U)
2 Circuits (NT-1)
Voice/Data (2B+D)
4272
Strata DK General Description
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