AT&T System 85 manual 155

7406D, 7406BIS, and 7406 Plus Voice Terminals

Distance Limitations

The maximum allowable distances of a 7406D or a 7406 Plus voice terminal from the DEFINITY G1, G3, System 75, or System 85 cabinet are shown in the following table.

		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 7406D, 7406BIS, and 7406 Plus voice terminals receive power from the system and do not require any external power supply. Additional power is required when these voice terminals are equipped with any adjuncts or the Z703AL1 data stand. Refer to the ADJUNCT POWER section of this manual.

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