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SYNC (Port-Network Synchronization)
Issue 1 June 2005 2143
SYNC (Port-Network Synchronization)
S8700 | 8710 / S8500
This section discusses synchronization problems local to the switch. For further information
about synchronization including network synchronization, refer to AT&T Network and Data
Connectivity, 555-025-201.
Synchronization maintenance is composed of both hardware and software components, and its
purpose is to provide a common reference frequency for reliable digital communications
between an media servers and other PBXs, central offices (COs), or customer-premises
equipment (CPE). Synchronization is implemented using several system components including:
● TN2312 IPSI
● TN722, TN767, and TN464 DS1 Interfaces (all suffixes)
● S8700 MC: TN768, TN780, or TN2182 Tone-Clock
● S8700 MC: TN572 Switch Node Clock
● S8700 MC: TN573 Switch Node Interface
● S8700 MC: TN570 Expansion Interface
Note:
Note: If both a primary and secondary references are administered for Stratum-4
synchronization, both references must reside in the same port network (PN).
S8700 MC
Traditional Sync Operation
For a DEFINITY system or for an S8700 Media Server Multi-Connect system, synchronization is
obtained from the public circuit-switched network through:
● A DS1 or BRI interface
● The ATM network
MO Name Alarm Level Initial SAT Command to Run Full Name of MO
SYNC MIN display errors Port Network Synchronization
SYNC WRN test synchronization Port Network Synchronization