Avaya 03-300430 User Manual

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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 
Clock
External T1/E1
External T1/E1
secondary
primary
ATM switch fabric
ATM timing distribution
Interface
module
Interface
module
Interface
module
ATM PNC
DEFINITY
PPN
DEFINITY
EPN
OC3
OC3
ATM-EI
ATM-EI
Tone clock
Tone clock
DS1
DS1
DS1
DS1
T1-splitter
T1-primary
T1-secondary
iodfst4 LJK 011998