Maintenance Object Repair Procedures
555-233-123
10-1588 Issue 4 May 2002
same port network, but there is no restriction as to in which port network
both must reside (that is, both references may be in an EPN). The
recommended placement of the references is in the PPN.
There are two kinds of Stratum 4 synchronization that are supported: Type I and
Type II. Stratum 4 type I is more stable than Type II and provides some switching
capability at the hardware level. Stratum 4 Type II operation is the only
synchronization strata provided by Generic 1. It is important to note that Stratum 4
Type I operation is not possible when one or both of the DS1 interface circuit
packs providing the reference sources is a TN722. Both must be the TN767 or
TN464 (suffix C or higher).
Stratum 3 Synchronization
The following diagram may help you to understand the synchronization
components needed for Stratum 3 synchronization.
NOTE:
This is only one possible configuration.
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