AT&T Call Management System Installation And Programming Manual page 74

Installing the Hardware
To install a loop-back, complete these steps:
1. Insert the modular plug on one end of the cord into a tip/ring Station
jack.
2. Insert the modular plug on the other end of the cord into a loop-start line
jack.
3. Repeat for each loop-back.
Figure 2-6 shows a loop-back.
Power
Supply
l o o p - s t a r t
j a c k s
m o d u l a r
c o r d s
t i p / r i n g
jacks
Figure 2-6. Loop-Back
Installation Procedures
2-17