Specifications

2.1 Considering The Mounting Requirements
The following requirements will help you to install the DSU II digital telephone system.
•
Locate the equipment cabinet within four feet of an AC electrical outlet dedicated
exclusively to the use of this equipment. The outlet must be a 117 VAC 15 AMP circuit
with a third-wire ground supplied to a standard electrical outlet (NEMA 5–15R).
•
Mount the common equipment within 25 feet of the TELCO/PBX jacks. The recommended
nominal distance is 7 feet.
•
Choose a secure and dry mounting location that has adequate ventilation. The temperature
range of the location must be within 32–122 degrees F (0–50 degrees C) and that the
relative humidity is less than 90 percent, non-condensing.
•
If the mounting surface is damp or if it is made of concrete or masonry material, you must
attach a backboard to the mounting surface for mounting the common equipment. Suitable
mounting backboards are available commercially or you can construct one from 3/4-inch
plywood by cutting it to size.
IMI66–132 DSU II Digital Telephone System
2 – 4 Installing The DSU II Digital Telephone System