Toshiba DK 16, DK8 manual Digital TELEPHONE/DIU/DDSS CONSOLE/ADM/LOOP Limits

INSTALLATION-WIRING DIAGRAMS

SECTION 100-816-208

MARCH 1993

TABLE 8-D

DIGITAL TELEPHONE/DIU/DDSS CONSOLE/ADM/LOOP LIMITS

	QPSU/KPSU	Maximum line length (24 AWG)
	or			1 Pair plus
MODE	Battery Backup1	1 Pair	2 Pair	external power3
DKT Ringing	QPSU/KPSU	1000 ft (303 m)	1000 ft (303 m)	1000 ft (303 m)
(Volume Max)	Battery Backup	675 ft (204 m)	1000 ft (303 m)	1000 ft (303 m)
DKT with	QPSU/KPSU	1000 ft (303 m)	1000 ft (303 m)	1000 ft (303 m)
DVSU (OCA)	Battery Backup	495 ft (150 m)	1000 ft (303 m)	1000 ft (303 m)
DKT with HHEU	QPSU/KPSU	1000 ft (303 m)	1000 ft (303 m)	1000 ft (303 m)
or
	Battery Backup	330 ft (100 m)	1000 ft (303 m)	1000 ft (303 m)
Carbon Handset
DKT with PDIU-DI/	QPSU/KPSU	495 ft (150 m)	1000 ft (303 m)	1000 ft (303 m)
PDIU-DI2	Battery Backup	165 ft (50 m)	675 ft (200 m)	1000 ft (303 m)
PDIU-DS	QPSU/KPSU	1000 ft (303 m)	1000 ft (303 m)	1000 ft (303 m)
	Battery Backup	675 ft (204 m)	1000 ft (303 m)	1000 ft (303 m)
DKT with HHEU	QPSU/KPSU	495 ft (150 m)	1000 ft (303 m)	1000 ft (303 m)
and PDIU-DI/PDIU-DI2	Battery Backup	33 ft (10 m)	330 ft (100 m)	1000 ft (303 m)
DDSS2060A	QPSU/KPSU	1000 ft (303 m)	1000 ft (303 m)	1000 ft (303 m)
	Battery Backup	500 ft (151 m)	1000 ft (303 m)	1000 ft (303 m)
DDCB	QPSU/KPSU	1000 ft (303 m)	1000 ft (303 m)	1000 ft (303 m)
	Battery Backup	500 ft (151 m)	1000 ft (303 m)	1000 ft (303 m)
DKT with DVSU	QPSU/KPSU	1000 ft (303 m)	1000 ft (303 m)	1000 ft (303 m)
and HHEU	Battery Backup	165 ft (50 m)	1000 ft (303 m)	1000 ft (303 m)
DKT with ADM	QPSU/KPSU	675 ft (204 m)	1000 ft (303 m)	1000 ft (303 m)
	Battery Backup	165 ft (50 m)	1000 ft (303 m)	1000 ft (303 m)

NOTES:

1.Battery backup applies to instances when the system is being powered by batteries exclusively.

2.Digital telephones and other digital devices can operate at maximum lengths with two pair wiring or an external power source.

3.See Figure 8-28for external power wiring.

4.Digital cable runs must not have the following:

§Cable splits (single or double) §Cable bridges (of any length)

§High resistance or faulty cable splices

8-4