AT&T System 75 Wiring Diagram page 329

CHAPTER 5. AUXILIARY EQUIPMENT INSTALLATION
SYSTEM 75
OR 75 XE
* THE MAXIMUM DISTANCE BETWEEN SYSTEM 75/75 XE IS
50 FEET WHEN USING 24 AWG WIRE. THE DISTANCE
MAY BE REDUCED IF HIGHER GAUGE WIRE IS USED OR
IF THE CAPACITIVE LOAD ON THE LINE IS INCREASED.
IN GENERAL, THE SAT AND THE SYSTEM 75/75 XE
SHOULD BE DIRECTLY CONNECTED BY THE SHORTEST
POSSIBLE CABLE.
Figure 5-32. Modem Connections for Processor Interface/EIA Ports
Between Two System 75s or 75 XEs
5-56
MAXIMUM*
CABLING DISTANCE
50 FEET
M25B CORD
SAT