Demand test descriptions and error codes - Avaya Support

SYNC (Port Network Synchronization)
SYNC (Port Network Synchronization)
This section discusses synchronization problems local to the switch.
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 servers and other PBXs, central offices (COs), or customer-premises equipment
(CPE). Synchronization is implemented using several system components including:
Note: If
MO Name in
Log
● TN2312 IPSI
● TN722, TN767, and TN464 DS1 Interfaces (all suffixes)
● S8700-series Fiber-PNC: TN768, TN780, or TN2182 Tone-Clock
● S8700-series Fiber-PNC: TN572 Switch Node Clock
● S8700-series Fiber-PNC: TN573 Switch Node Interface
● S8700-series Fiber-PNC: TN570 Expansion Interface
Note:
both a primary and secondary reference are administered for Stratum-4
synchronization, both references must reside in the same port network (PN).
S8700-series Fiber-PNC
Traditional Sync Operation
For an S8700 Server Fiber-PNC system, synchronization is obtained from the public
circuit-switched network through:
● A DS1 or BRI interface
● The ATM network
For DS1- or BRI-based synchronization, a particular DS1 or PRI interface is configured as the
synchronization reference. The IPSI/Tone-Clock board in the same PN locks on to this
reference and regenerates clock signals that are placed on the PN’s backplane. In turn, the
Center Stage Switch (CSS) components transfer this timing to every other PN. These IPSI/
Tone-Clocks then regenerate clock signals for their own PNs at the same rate as the:
● Master PN
● Public network
Alarm Level Initial Command to Run Full Name of MO
SYNC MIN display errors Port Network Synchronization
WRN test synchronization
Issue 5 May 2009 893