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DEFINITYEnterpriseCommunicationsServerandSystem75andSystem85
Terminals and Adjuncts Reference
555-015-201
Issue 11
December 1999
The 7300 Series Voice Terminals
10-5The 7303S Voice Terminal
10
Distance Limitations
The maximum allowable distances of a 7303S voice terminal from the DEFINITY
G1, G2, and G3, DEFINITY ECS, System 75, or System 85 cabinet are shown in
the table below.
Note:
Range may be extended to 2,000 feet (610m) for 24- or 26-AWG wire by adding local
-48 volt DC power in the satellite closet. Power supplies such as the 346A or 329A may be
connected to the fourth pair from the terminals to obtain the increased range. These power
supplies must be within 250 feet of the terminals.
Power Requirements
The 7303S voice terminal is powered by the tip and ring leads.If the 7303S is
equipped with an adjunct, it is powered by the same power source. This impacts
the maximum nominal cabling distance. The range may be extended by adding
a -48 volt DC power source in the satellite closet.
Power Failure Operation
The 7303S voice terminal cannot be used as an emergency station during power
failure transfer conditions.
FCC Registration
The 7303S voice terminal is not FCC registered.
Table 10-1. Distance Limitations for the 7303S Voice Terminal
System
Port
Board
Number of
Adjuncts
Nominal Maximum Range in
Feet (Meters) (See Note)
24 AWG 26 AWG
System 85 ANN17B 0 1,700 (519) 1,000 (305)
1 1,000 (305) 650 (198)
DEFINITY G2 ANN17B 0 1,700 (519) 1,000 (305)
1 1,000 (305) 650 (198)
TN762B – 1,000 (305) 750 (229)
DEFINITY G1
and G3,
DEFINITY ECS,
and System 75
TN762 – 1,000 (305) 750 (229)