Distance Limitations; Power Requirements - AT&T Callmaster Series Reference Manual

Distance Limitations

The maximum allowable distances of a 7406D or a 7406 Plus voice terminal from the DEFINITY
G1, G3, System 75, or System 85 cabinet are shown in the following table.
SYSTEM
System 85
DEFINITY G2
DEFINITY G1 & G3
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
the EXPOSED PORT PROTECTION section in this manual.

Power Requirements

The 7406D, 7406BIS, and 7406 Plus voice terminals receive power from the system and do not
require any external power supply. Additional power is required when these voice terminals are
equipped with any adjuncts or the Z703AL1 data stand. Refer to the ADJUNCT POWER section
of this manual.
7406D, 7406BIS, and 7406 Plus Voice Terminals
NOMINAL MAXIMUM RANGE
IN FEET (METERS) (SEE NOTE)
PORT BOARD
24 AWG
SN270B 3,400 (1,034)
TN754 3,400 (1,034)
SN270B 3,400 (1,034)
TN754 3,400 (1,034)
TN754 3,400 (1,034)
26 AWG
2,200 (671)
2,200 (671)
2,200 (671)
2,200 (671)
2,200 (671)
3-155