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A-6 ADMINISTRATION REQUIREMENTS
Secondary
Primary
System 75 must obtain synchronization timing from a 4ESS. Typically, the
carrier slot location for the DS1 connecting to a 4ESS is used as the primary
source. The switch must also be equipped with a TN741.
If multiple DS1s are present in a System 75 and are connected to this or other
4ESSs, then it may be desirable to enter their slot locations as a secondary
synchronization source. Refer to chapter 5, Synchronization of Digital Network
Facilities, for details.
Location
Name
Slip
Circuit pack slot location (as required)
Enter the facility name (if applicable)
Generally, DS1 facilities are very stable. Therefore, in most applications, a y
should be entered.