Lucent Technologies 6.1 manual Line Compensation Settings DB Loss Cable Feet

MERLIN LEGENDCommunications System Release 6.1				Issue 1
System Planning 555-661-112				August 1998
3 Lines/Trunks
Selecting Line/Trunk Options				Page 3-26
	Table 3–3. 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.

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

NOTE:

The following information is for planning clock synchronization in systems that are not part of a private network. For planning clock synchronization in a private network configuration, see the Network Reference.

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.

9.If assigning backup synchronization:

a.In the box that describes the 100D module providing secondary synchronization, check Secondary.

b.In the box that describes the 100D module providing tertiary back up, check Tertiary.