Lucent Technologies 6.1 manual Factory setting −133 133 −266 266 −399 399 −533 533 −655

MERLIN LEGENDCommunications System Release 6.1	Issue 1
System Planning 555-661-112	August 1998
3 Lines/Trunks
Selecting Line/Trunk Options	Page 3-32

7.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 1.)

Table 3–4. Line Compensation Settings

Setting	dB Loss	Cable Feet*
1 (factory setting)	-0.6	0−133
2	-1.2	133−266
3	-1.8	266−399
4	-2.4	399−533
5	-3.0	533−655

*Based on 22-gauge cable.

8.If the system includes both 800 NI-BRI and 100D modules, clock synchro- nization 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.

If the switch is part of a private network, clock synchronization needs to be coordinated for the entire network. See the Network Reference for information.

Plan your clock source administration to minimize the need for clock switching, which is known to cause noise on active calls.

Under Priority in the Clock Synchronization section, do one of the following:

■If installing only one 100D module:

—To keep the factory setting, check Primary (that is, this module provides synchronization for the system).

—If the synchronization source is other than through the 100D module, check None.

■If installing more than one 100D module, decide which module, if any, provides the primary synchronization:

—If Module 1 provides clock synchronization, check Primary in the first box (the factory setting).

—If Module 2 (or Module 3) provides clock synchronization, check Primary in the box that describes that 100D module.

—If the synchronization source is other than through a 100D module, check None.