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Communication Manager Maintenance-Object Repair Procedures
612 Maintenance Procedures for Avaya Communication Manager 3.0, Media Gateways and Servers
Figure 32: Stratum-4 Synchronization with Unduplicated ATM PNC
Note:
Note: The TN722 DS1 Interface circuit pack does not provide a synchronization
reference as reliably as the TN767 or TN464 circuit packs. Therefore, administer
the TN767 or TN464 circuit packs as the primary or secondary sources.
Stratum-3 Synchronization
Stratum-3 synchronization is not supported in S8700 Multi-Connect with ATM PNC.
Troubleshooting ATM synchronization
A significant part of the Synchronization Recovery Strategy for a S8700 Multi-Connect with ATM
PNC resides in the ATM switch’s clock hardware, firmware, and software. S8700 Multi-Connect
monitors synchronization performance and alarms any faulty components. See SYNC
(Port-Network Synchronization) on page 2143.
Clock
External T1/E1
External T1/E1
secondary
primary
ATM switch fabric
ATM timing distribution
Interface
module
Interface
module
Interface
module
ATMPNC
DEFINITY
PPN
DEFINITY
EPN
OC3 OC3
ATM-EI ATM-EI
Tone clock Tone clock
DS1 DS1DS1 DS1
T1-splitter
T1-primary
T1-secondary
iodfst4 LJK 011998