NEC NEAX1000IVS system manual Connecting Tone Source Supplied with D.C

NAP-200-007

Sheet 37/55

Termination of Cables on MDF

•If a D.C. voltage is supplied with the tone from the external tone source equipment, a transformer or cou- pling capacitor should be used as shown in Figure 007-27.

				CAPACITOR
	Ring		TRANSFORMER	2 µF	SOURCE
					R
	TO COT				DC
	Tip				VOLTAGE
TO PBX					SOURCE
	K				EXTERNAL EQUIPMENT
		TO CONTROL CIRCUIT
		FROM PN-DK00
			CAPACITOR
	Ring		2 µF	SOURCE
					R
	TO COT				DC
	Tip
TO PBX					VOLTAGE
					SOURCE
	K			EXTERNAL EQUIPMENT
		TO CONTROL CIRCUIT
		FROM PN-DK00
	Figure 007-27		Connecting Tone Source Supplied with D.C.

CHAPTER 3 NDA-24219

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Revision 2.0