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DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance Objects
3-768MAPD-BD (MAPD Interface Circuit Pack TN802)
3
PSTN fallback feature
The Public Switched Telephone Network (PSTN) fallback feature is available on
the Internet trunk application software, which periodically pings the remote
destinations that the software calls. When the far end returns a poor response
time to the ping, DEFINITY’s ARS or AAR network routing patterns bypass those
ports and direct the call to another port, typically on a PSTN trunk.
When the remote destinations show acceptable response times to subsequent
pings, the corresponding ports are returned to “idle,” where they are available for
service.
Cabinet configuration
Because of overheating, the TN802 circuit pack should not be placed directly
above or below another MAPD circuit pack.
UPS protection
Because Windows NT is more vulnerable to damage from a power interruption
than the DEFINITY ECS, uninterrupted power supply (UPS) protection is strongly
recommended for systems using the TN802 circuit pack.
Table 3-322. Restore TN802 administration data
Step Description Comments
1. Restore IP Trunk
administration
At the Windows NT desktop, double-click on the
IP Trunk Back UP Restore icon.
The IP Trunk Backup/Restore Utility screen
appears.
2. Select utility In the IP Trunk Backup/Restore Utility dialog
screen, click Files, Restore.
The IP Trunk Backup screen appears
3. Select restore In the IP Trunk Backup screen, click on the
Restore button.
4. Wait Wait until the yellow Disk-In-Use LED (Note 5 in
Figure 3-29
) light is out.
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