Section 363-703-103
Revision 01
Page 4
4. CERTIFICATION
4.01
FCC Compliance. The FLC-703 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 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.
2120 Ritchey St.
Santa Ana, CA 92705-5101
ATTN: Customer Repair Facility
(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
The FLC-703 Channel Unit provides 8 POTS
interfaces to the CO switch. The card performs the
interface function between the analog POTS circuit and the
internal digital PCM bus. In addition, each card:
•
Converts analog signals to 64 kbps
µ
-Law PCM
digital format
•
Detects ringing voltage
•
Detects forward disconnect
•
Detects a subscriber test access signal
•
Provides loop closure
•
Pair Gain Test Controller (PGTC) compatibility
6.02
A block diagram of the FLC-703 Channel Unit is
shown in Figure 3. One 8-Channel COT POTS Unit
supports eight POTS interfaces.
6.03
A status LED is associated with each line to indicate
whether the line is off-hook, idle, ringing, or being
tested. A common fault LED indicates a general fault has
been detected on the card and it should be replaced.
6.04
Test access connections to a specific line circuit are
made through the maintenance terminal or by the
CO switch applying the appropriate voltages on the
subscriber line (see paragraphs 2.01 through 2.04).
