DEFINITY Enterprise Communications Server Release 8.2
Upgrades and Additions for R8r
555-233-115 Issue 1
April 2000
Fiber Link Administration
A-15Administer Fiber Links
A
NOTE:
The line equalization setting defaults to 2 and remains in effect until
changed b y administration. Because inc orrect equalizer setting s
cause a potentially hig her error rate on the DS1 facility, it is
necessary to provide the c orrect settings b ased 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 und er the DS1 Converter Facilities heading
for each DS1 facility connected to ENDPOINT-2 (see Table 6-15). The DS1
line signal is pre-equalized at the transmitter so that DS1 line pulses are
the correct amplitud e and shape when they reach the Networ k Interface.
The amount of equalization necessary is d etermined by the d istance to
the Network Interface (when the end point supplies a DSX-1 interface) and
also by the type of wiring u sed to connect to the Network Interface. The
types of wiring allowed are 22-g auge ABAM (shielded twisted pair) cab le,
24-gauge Premises Distribution System (PDS) wiring, and 26-g auge PDS
wiring.
■Facility A Circuit ID — Displays when the value in Facility
Installed for Facility A is yes. Enter up to 40 characters to id entify the
cabinet, carrier, and slot of the DS1 Converter circuit pac k’s physical
location.
Similarly, Facility B Circuit ID, Facility C Circuit ID, and Facility D Circuit ID
fields display for eac h of the DS1 Converter Facilities when yes is entered
in the corresponding Facility Installed field.
Table 6-15. 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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