Avaya 03-300430 User Manual
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.
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
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