AT&T System 85 manual System SN270B 400 1,034 200 TN754

7401D and 7401 Plus Voice Terminals

		NOMINAL MAXIMUM RANGE
SYSTEM	PORT BOARD	IN FEET (METERS) (SEE NOTE)
		24 AWG	26 AWG
System 85	SN270B	3,400 (1,034)	2,200 (671)
	TN754	3,400 (1,034)	2,200 (671)
DEFINITY G2	SN270B	3,400 (1,034)	2,200 (671)
	TN754	3,400 (1,034)	2,200 (671)
DEFINITY G1 & G3	TN754	3,400 (1,034)	2,200 (671)
System 75

Note: These ranges can be extended to 5,000 feet (1524 m) for 24 AWG wire and 4,000 feet (1219 m) for 26 AWG wire with the use of a Data Link Protector (DLP). Refer to the EXPOSED PORT PROTECTION section in this manual.

Power Requirements

The 7401D and 7401 Plus voice terminals receive power from the system and do not require any external power supply. Additional external power is required when the 7401 Plus voice terminal is equipped with any adjuncts, such as an external speakerphone. Refer to the Adjunct Power section of this manual.

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