MDF PCB Wiring
Station Wiring Diagrams
7-4 PRELIMINARY & CONFIDENTIAL Strata CTX I&M 10/02
Station Wiring Diagrams
Standard
Telephone
Building #1
Building #2
PCOU, RCOU/RCOS
RGLU, RCIU/RCIS,
RBUU/RBUS,
RBSU/RBSS,
RMCU/RCMS
RDDU
Digital
Telephone
Digital Telephone
or Cordless Base
E&M Tie Line
Ground/Loop/ISDN BRI/
E911 CAMA Lines
Secondary protectors – standard voltage
Secondary protectors – low voltage
MDFB
DDCB
DDSS
Console
HESB
RDTU or
RPTU
REMU
DID Line
POW DTR DSR
BATI
Console Handset
PC
Attendant
Console
DDCB
MDFB
T1 Span Line or ISDN PRI Line
Earth Ground
Earth Ground
CSU
PSTU
RSTU/RSTU2/
RSTU3/
RDSU/RSTS
5655
ADKU,
BDKU/BDKS
or PDKU
Important! To protect against transient voltages and currents, solid state secondary
protectors must be installed if there is outside wiring, and on all DID and
E&M Tie lines. These protectors, which contain fast semiconductors in
addition to fuses, shall comply with the requirements for secondary protectors
for communication circuits, UL 497A. Care must be taken to ensure that they
are very well grounded to a reliable earth ground. Recommended protectors
are available in the fast Series 6 line from ONEAC Corp., Libertyville, Illinois
60048, (800) 327-8801. Install and test the secondary protectors precisely to
the installation instructions of the manufacturer.
Figure 7-1 Strata CTX Secondary Protector Diagram
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