Fiber Link Administration
555-233-115
A-14
Issue 7 November 2003
NOTE:
The line equalization setting defaults to 2 and remains in effect until
changed by administration. Because incorrect equalizer settings
cause a potentially higher error rate on the DS1 facility, it is
necessary to provide the correct settings based on the distance to the
Network interface.
If it is a TN574 circuit pack, the default for all facilities is 1.
■
DS1CONV-2 Line Compensation
—
Enter the line compensation (1 to 5)
in the A, B, C, and D columns under the DS1 Converter Facilities heading
for each DS1 facility connected to ENDPOINT-2 (see
). The DS1
line signal is pre-equalized at the transmitter so that DS1 line pulses are
the correct amplitude and shape when they reach the Network Interface.
The amount of equalization necessary is determined by the distance to the
Network Interface (when the endpoint supplies a DSX-1 interface) and also
by the type of wiring used to connect to the Network Interface. The types of
wiring allowed are 22-gauge ABAM (shielded twisted pair) cable, 24-gauge
Premises Distribution System (PDS) wiring, and 26-gauge PDS wiring.
■
Facility A Circuit ID
—
Displays when the value in
Facility
Installed
for Facility A is yes. Enter up to 40 characters to identify the
cabinet, carrier, and slot of the DS1 Converter circuit pack’s physical
location.
Similarly, Facility B Circuit ID, Facility C Circuit ID, and Facility D Circuit ID
fields display for each of the DS1 Converter Facilities when yes is entered
in the corresponding Facility Installed field.
Table A-1.
Distance to DSX-1 Interface (feet)
Equalizer
Setting
22 AWG ABAM & 24 AWG PDS
26 AWG PDS
1
1 to 133
0 to 90
2
133 to 266
90 to 180
3
266 to 399
180 to 270
4
399 to 533
270 to 360
5
533 to 655
360 to 450
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