Section 363-752-100
Revision 01
Page 4
4. CERTIFICATION
4.01
FCC Compliance. The FRC-752 Channel Unit
complies with the limits for Class A digital devices
pursuant to Part 15 of the FCC rules. These limits are
designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial
environment. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct
the interference at his own expense.
4.02
Refer to the installation section of the appropriate
instruction manual for the unit you are installing to
get information on:
•
Cabling
•
Proper connections
•
Grounding
•
Line vs. local power
4.03
All wiring external to the product(s) should follow
the provisions of the current edition of the National
Electrical Code.
5. WARRANTY
5.01
PairGain Technologies warrants this product to be
free of defects and to be fully functional for a period
of 5 years from the date of original shipment, given proper
customer installation and regular maintenance. PairGain will
repair or replace any unit without cost during this period if
the unit is found to be defective for any reason other than
abuse or improper use or installation.
5.02
This module should not be field repaired. If it fails,
replace it with another unit and return the faulty unit
to PairGain for repair. Any modifications of the unit by
anyone other than an authorized PairGain representative will
void the warranty.
5.03
If a unit needs repair, call PairGain for a Return
Material Authorization (RMA) number and return
the defective unit, freight prepaid, along with a brief
description of the problem, to:
PairGain Technologies, Inc.
14402 Franklin Avenue
Tustin, CA 92680
ATTN: Repair and Return Dept.
(800) 638-0031
5.04
PairGain will continue to repair faulty modules
beyond the warranty program at a nominal charge.
Contact your PairGain sales representative for details and
pricing.
B. FUNCTIONAL DESCRIPTION
6. OPERATIONAL CAPABILITIES
6.01
Each FRC-752 RT Channel Unit provides four
POTS interfaces between the RT and subscribers,
and performs the following functions:
•
64 kbps A-Law PCM encoding
•
Applies ringing voltage
•
Generates forward disconnect
•
Generates metering tones
•
Detects an off-hook or ring-trip condition
•
Connects a subscriber loop to a metallic test pair
•
Protects against secondary surges and power line
cross
6.02
A block diagram of the FRC-752 is shown in
Figure 3.
Figure 3. FRC-752 Block Diagram.
