Revision
04
February 19, 1998
363-765-104-04
30
PairGain
Engineering - Plant Series
FRE-765
List
4x
Cabling Verification.
Verify the following connections:
1
Visually ensure that the ground wire is tightly secured to the grounding lug inside the FRE-765 and at the
ground termination point.
2
Visually verify that the HDSL lines are terminated properly and with the correct orientation. If the HDSL
lines are not connected properly, the COT will not communicate with the FRE-765.
3
Verify that the HDSL lines are "dry."
a
Verify 0 Vdc between the Tip and Ring, Tip and ground, and Ring and ground of each of the HDSL pairs
terminated at the FRE-765.
b
Verify a value greater than 100 k
Ω
resistance between Tip and ground, and Ring and ground for each of
the HDSL pairs terminated at the FRE-765.
Turn-Up and Testing
Refer to the COT Line Unit Technical Practice or RT Line Unit Technical Practice for complete COT and RT
turn-up and testing procedures.
Troubleshooting
Refer to the COT Line Unit Technical Practice or RT Line Unit Technical Practice for complete COT and RT
troubleshooting procedures.
TECHNICAL SUPPORT
PairGain Technical Assistance is available 24-hours-a-day, 7-days-a-week by contacting PairGain Customer
Service Engineering group at:
During normal business hours (8:00 AM to 5:00 PM, Pacific Time, Monday - Friday, excluding holidays),
technical assistance calls are normally answered directly by a Customer Service Engineer. At other times, a
request for technical assistance is handled by an on-duty Customer Service Engineer through a callback process.
This process normally results in a callback within 30 minutes of initiating the request.
In addition, PairGain maintains a computer bulletin board system for obtaining current information on PairGain
products, product troubleshooting tips and aids, accessing helpful utilities, and for posting requests or questions.
This system is available 24-hours-a-day by calling (714) 730-3299. Transmission speeds up to 28.8 kbps are
supported with a character format of 8-N-1.
Perform the following verifications before inserting any cards in the COT shelf.
Telephone:
(800) 638-0031 or (714) 832-9922
Fax:
(714) 832-9924