Toshiba CTX28 manual Station Wiring Diagrams, 10-4

MDF PCB Wiring

Station Wiring Diagrams

Station Wiring Diagrams

Building #1		Building #2
			HESB
PSTU		Standard
RSTU/RSTU2/
		Telephone
RSTU3/
RDSU/RSTS/
ASTU/BSTU
		DDSS	Digital
		Console	Telephone
		Digital Telephone
		or Cordless Base
ADKU,		Console Handset
BDKU/BDKS,
BWDKU			PC
or PDKU
		BATI	Attendant
	DDCB
			Console
		MDFB
		DDCB	MDFB
RDTU,
BPTU	CSU		6687
or RPTU		T1 Span Line or ISDN PRI Line

Earth Ground

REMU	E&M Tie Line (to PSTA)
RDDU	DID Line

PCOU, RCOU/RCOS			Ground/Loop/ISDN BRI/ (to PSTA)
RGLU, RCIU/RCIS,			E911 CAMA Lines (Gas tube secondary
RBUU/RBUS,			protectors provided on the interface cards
RBSU/RBSS,
			per UL requirements.
RMCU/RCMS
		Secondary protectors – standard voltage
	Earth Ground	Secondary protectors – low voltage

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 10-1 Strata CTX Secondary Protector Diagram

10-4 Strata CTX I&M 06/04