AT&T System 85 manual TN742 20,000 100 13,000 962

500 Series Telephone

Distance Limitations

The maximum allowable distances of a 500 telephone from the DEFINITY G1, G2, G3, System 75, or System 85 cabinet are shown in the table below.

		NOMINAL MAXIMUM RANGE
SYSTEM	PORT BOARD		IN FEET (METERS)
		24 AWG		26 AWG
SYSTEM 85	SN229	3,500	(1,067)	3,500	(1,067)
	SN228B	15,000	(4,572)	9,000	(2,743)
DEFINITY G2	SN229	3,500	(1,067)	3,500	(1,067)
	SN228B	15,000	(4,572)	9,000	(2,743)
	TN742	20,000	(6,100)	13,000	(3,962)
	TN746	3,100 (945)		2,000 (610)
DEFINITY G1 & G3	TN742	20,000	(6,100)	13,000	(3,962)
SYSTEM 75	TN769	20,000	(6,100)	13,000	(3,962)
	TN746	3,100 (945)		2,000 (610)

Power Requirements

The 500 telephone is powered by the tip and ring leads. It does not require any external power supply.

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