Line Compensation Settings (Based On 22-Gauge Cable) - AT&T MERLIN LEGEND Release 3.1 System Planning Manual

Selecting Line/Trunk Options
5. Under the Signaling Mode heading, check Common-Channel Signaling
(CCS).
NOTE:
Common-Channel Signaling (CCS) is automatically assigned when PRI is
selected. Also, Channel 24 cannot be used for voice or data
transmissions.
6. Under the Line Compensation heading:
a. Fill in the approximate distance (number of cable feet) between the
100D module and its CSU or other far-end connection in the space
before Cable Feet.
b. Use Table 3 4 to select the line compensation setting needed. (The
factory setting is a value of 1.)
Table 3–4. Line Compensation Settings (Based on 22-Gauge Cable)
Setting
1 (factory setting)
2
3
4
5
*
Based on 22-gauge cable.
7. If the system includes both 800 NI-BRI and 100D modules, clock
synchronization planning should be completed at the same time. There is
only one primary/secondary/tertiary clock for both 800 NI-BRI modules
and 100D modules, with the same system programming screens used for
both types.
Plan your clock source administration to minimize the need for clock
switching, which is known to cause noise on active calls.
dB Loss Cable Feet*
-0.6
0 133
-1.2
133 266
-1.8
266 399
-2.4
399 533
-3.0
533 655
3–29
Lines/Trunks