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DEFINITYEnterpriseCommunicationsServerandSystem75andSystem85
Terminals and Adjuncts Reference
555-015-201
Issue 11
December 1999
The 7400 Series Voice Terminals
11-35The 7404D Voice Terminal
11
Distance Limitations
The maximum distances the 7404D voice terminal can be located from the system
cabinet is shown in the following table.
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. Refer to EXPOSED PORT
PROTECTION.
Power Requirements
The 7404D voice terminal requires a three prong 115-volt AC outlet not under the
control of a wall switch for power. A built in power supply converts the 115 volts to
the DC power required. A 3-wire AC power cord is provided with the voice
terminal. No external power adjuncts are required.
Power Failure Operation
The 7404D voice terminal cannot be used as an emergency station during power
failure transfer conditions.
FCC Registration
The 7404D voice terminal is not FCC registered.
Hearing Aid Compatible
This voice terminal is compatible with the inductively coupled hearing aids
prescribed by the FCC.
Table 11-6. Distance Limitations for the 7404D Voice Terminal
System Port Board
Nominal Maximum Range in Feet
(Meters) (See Note)
24 AWG 26 AWG
System 85 SN270B
TN754
3,400 (1,034)
3,400 (1,034)
2,200 (671)
2,200 (671)
DEFINITY G2 SN270B
TN754
3,400 (1,034)
3,400 (1,034)
2,200 (671)
2,200 (671)
DEFINITY G1 and
G3, DEFINITY
ECS, and System
75
TN754 3,400 (1,034) 2,200 (671)