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DEFINITYEnterpriseCommunicationsServerandSystem75andSystem85
Terminals and Adjuncts Reference
555-015-201
Issue 11
December 1999
The 500 and 2500 Series Telephones
14-4The 500 Series Telephone
14
Distance Limitations
The maximum allowable distances of a 500 telephone from the DEFINITY G1, G2,
and G3, DEFINITY ECS, System 75, or System 85 cabinet are shown in the table
below.
Power Requirements
The 500 telephone is powered by the tip and ring leads. It does not require any
external power supply.
Power Failure Operation
The 500 telephone can be used as an emergency station during power failure
transfer conditions.
FCC Registration
The 500 telephone is FCC registered.
Table 14-1. Distance Limitations for the 500 Telephone
System Port Board
Nominal Maximum Range in Feet
(Meters)
24 AWG 26 AWG
System 85 SN229
SN228B
3,500 (1,067)
15,000 (4,572)
3,500 (1,067)
9,000 (2,743)
DEFINITY G2 SN229
SN228B
TN742
TN746
3,500 (1,067)
15,000 (4,572)
20,000 (6,100)
3,100 (945)
3,500 (1,067)
9,000 (2,743)
13,000 (3,962)
2,000 (610)
DEFINITY G1 and
G3, DEFINITY
ECS, and System
75
TN742
TN769
TN746
20,000 (6,100)
20,000 (6,100)
3,100 (945)
13,000 (3,962)
13,000 (3,962)
2,000 (610)