Fujitsu SRS-1050 manual Two Unit Installations, Adaptive, Single Unit Installations

SRS -1050 Installation (			Appendix B
NT1's also have a timing setting		Two Unit Installations
with the options FIXED or		Bridging at the NT1 – Maximum
ADAPTIVE.
		Distance Between NT1 and Units
On some NT1's the options may		is 250 ft.
be labeled PB or PTP. PB is		The overall maximum length of the
equivalent to FIXED and PTP is
		cable is 1600 ft. The TR switch on
equivalent to ADAPTIVE. Timing
		both Terminal Equipment Units
settings in the following
		should be OFF. The TR switches
discussions are based on NT1
		on the NT1 should be set to ON
manufacturer recommendations.
		at 50 Ohms. NT1 timing switches
		(if present) should be set to
Single Unit Installations		FIXED or (PB).
The maximum distance between		NT1 (TR = 50 Ohms)
the NT1 and the ISDN Terminal			Terminal Equipment (TR = OFF)
Equipment is 3000 feet in a single			Terminal Equipment (TR = OFF)
unit installation. The TR switch
on the Terminal Equipment		Two Unit Installations
should be ON. The TR switches
on the NT1 should be set at On at		Bridging at the NT1 – Distance
100 Ohms. NT1 timing should be
		Between NT1 and Units is Greater
set to ADAPTIVE (or PTP).
		Than 250 ft.
NT1 (TR = 100 Ohms)		The overall maximum length of the
	Terminal Equipment (TR = ON
		cable is 1600 ft. The TR switches
		on both Terminal Equipment
		Units should be ON. The TR
		switched on the NT1 should be
		set to OFF. NT1 timing switches
		(if present) should be set to
		FIXED or (PB) when the distance
		between the NT1 and the
		Terminal Equipment is 400 ft or
		less for level 3 wire, or 600 ft for
		level 5 wire. Longer loops require
		ADAPTIVE (or PTP).
		NT1 (TR = OFF)
			Terminal Equipment (TR = ON)
			Terminal Equipment (TR = ON)

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