AT&T Callmaster Series Reference Manual page 409

Distance Limitations
The maximum allowable distances of a 500 telephone from the DEFINITY G1, G2, G3,
System 75, or System 85 cabinet are shown in the table below.
SYSTEM
SYSTEM 85
DEFINITY G2
DEFINITY G1 & G3
SYSTEM 75
Power Requirements
The 500 telephone is powered by the tip and ring leads. It does not require any external power
supply.
NOMINAL MAXIMUM RANGE
PORT BOARD
24 AWG
SN229 3,500 (1,067)
SN228B 15,000 (4,572)
SN229 3,500 (1,067)
SN228B 15,000 (4,572)
TN742 20,000 (6,100)
TN746 3,100 (945)
TN742 20,000 (6,100)
TN769 20,000 (6,100)
TN746 3,100 (945)
500 Series Telephone
IN FEET (METERS)
26 AWG
3,500 (1,067)
9,000 (2,743)
3,500 (1,067)
9,000 (2,743)
13,000 (3,962)
2,000 (610)
13,000 (3,962)
13,000 (3,962)
2,000 (610)
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