AT&T SPIRIT 616 EXPANSION UNIT Installation Instructions

AT&T
SPIRIT
INSTALLATION INSTRUCTIONS
The SPIRIT Communications System controller provides service for up to three incoming
lines and eight telephones. This expansion unit doubles the line and telephone set capacity of
the system. Installation and wiring of the complete system is explained in your Customer
Installation Instructions.
What You Should Find in The Expansion Unit Box:
Expansion Unit
Three 7' line cords
STEP 1 Unplug the System Controller
IMPORTANT: FAILURE TO UNPLUG THE CONTROLLER AC POWER CORD FROM THE
ELECTRICAL OUTLET BEFORE INSTALLING THE EXPANSION UNIT MAY CAUSE
HARM TO BOTH UNITS.
STEP 2 Expose the Interface Connector
The interface connector for the expansion unit is in the 308 controller, protected by a snap-in
cover (see picture). Insert a small screwdriver in the slot at the bottom of the cover and pry
gently to remove. Store the cover for possible future use.
SLOT
STEP 3 Connect the Cable
On one end of the expansion unit is a short flat cable. Hold the expansion unit in your left hand,
near the left side of the controller, with the modular jacks positioned at the bottom. With
your right hand plug the cable into the interface connector (see picture). Make sure the cable is
fully inserted.
®
Communications System
Model 308/616
616 EXPANSION UNIT