Toshiba CTX28 manual SW2, FG1, Astu Electrical Characteristics Description

PCB Installation

ASTU – Standard Telephone Interface Unit (CTX100 only)

FG1

Frame Ground

P1

Power Connector

J2	RJ11 Connections
J1	for single-line devices

P2

Connects to ACTU P8

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	Figure 6-1 ASTU Controls and Interface Connectors
Table 6-1		ASTU Controls, Indicators, and Interface Connectors
	Control/Indicator/Connector		Type of Component	Description
	P1		5-wire connector cable	Connects to the motherboard for supply power.
	P2		10-wire connector cable	Connects to the processor PCB for data and
				signal highway.
	J1, J2		RJ11 - 6-pin modular	Interfaces with single-line devices.
	SW2		Jumper plug	Factory shipped in “Mu law” position. For
				countries requiring “A Law,” switch to “A.”
	FG1		Green Wire	Connects to the chassis with a screw (frame
				ground).
	Table 6-2	ASTU Electrical Characteristics
		Item		Description
	Single line device interface		RJ11 Connector
	Ringer Type		Square Wave
	Ringer Voltage		190Vp-p Open Voltage (Square Wave)
	Line Voltage		-24V

PCB Installation

Strata CTX I&M 06/04 6-5