Lucent Technologies 6.1 manual Merlin LEGENDCommunications System Release

MERLIN LEGENDCommunications System Release 6.1	Issue 1
System Planning 555-661-112	August 1998
3 Lines/Trunks
Selecting Line/Trunk Options	Page 3-27

10.Under the Source subheading in each box, do one of the following:

■To retain the factory setting, check Loop (that is, the system uses the clock of the far-end connection).

■To change the setting, check Local (that is, the clock is free-running).

NOTE:

The MERLIN LEGEND system must be set to Loop if the clock Source is coming from the network. The Local setting is generated from the MERLIN LEGEND system and must be used whenever connecting two MERLIN LEGEND systems or a MERLIN LEGEND system and a DEFINITY system (Tie trunk). In a Tie trunk configuration, one system MUST have the clock Source set to Local and the other MUST be set to Loop.

11.Under the Activation subheading in each box, do one of the following:

■If loop clock synchronization is taking place, check Active (factory setting).

■If the clock is free-running, check Not Active.

NOTE:

Normally, the primary synchronization source is set to Active and other modules are set to Not Active.

12.If incoming ground-start or loop-start trunks are to be emulated, then record the CSU setting under the Channel Service Unit heading by doing one of the following:

a.To retain the factory setting, check Foreign Exchange.

b.To change the factory setting, check Special Access.

To set up T1 channels for T1 Switched 56 service, continue with the next section. To set up T1 Switched 56 service on T1-Tie trunks, proceed to the section entitled “Tie Trunks.” To set up a 100D module for PRI service, proceed to the section entitled “PRI Service.”