Avaya 03-300430 User Manual

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)

●

: TN768, TN780, or TN2182 Tone-Clock

●

: TN572 Switch Node Clock

●

: TN573 Switch Node Interface

●

: TN570 Expansion Interface

Note:

If both a primary and secondary references are administered for Stratum-4 
synchronization, both references must reside in the same port network (PN).

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

SYNC

MIN

Port Network Synchronization

SYNC

WRN

Port Network Synchronization