AT&T System 85 manual 7403D voice terminal was available in black and misty cream

7403D Voice Terminal

Ringing

The 7403D voice terminal has electronic tone ringing. The volume control is on the left side of the housing.

Mounting Options

The 7403D voice terminal comes equipped with a nonadjustable desk stand. An optional wall mounting kit can be ordered.

Color Options

The 7403D voice terminal was available in black and misty cream.

Distance Limitations

The maximum distance the 7403D voice terminal can be located from the system cabinet is 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

EXPOSED PORT PROTECTION.

Power Requirements

The 7403D voice terminal receives power from the system and does require any external power supply. Additional power is required when the 7403D voice terminal is equipped with a DTDM. Refer to the ADJUNCT POWER section of this manual.

3-123