Specifications

32 System Software Diagnostics Guide — September 2006
Diagnosing First Call Issues
Figure 1. PSTN Diagnostics Tool - Board Level View
2. In the board level view, check that the Signal indicator is green for each trunk. The color green
indicates a connection between the trunk and another device. The color grey indicates no
connection exists. (The various indicators for each trunk, Red, Yellow, Signal, and Loopback,
mimic the indicators on the physical board.)
3. If the Signal indicator is green for all trunks on the board, then a connection exists between all
trunks and another device. You can then proceed to check the status of alarms as described in
Section 5.3, “Monitoring the Status of Alarms”, on page 33.
If the Signal indicator is grey for a trunk, no connection exists. The cause may be a hardware
problem or a faulty connection.
Note: The Loopback indicator shows whether your board is set for loopback test mode. If
loopback is in place, the Loopback indicator is orange; otherwise, the indicator is
grey. You should not have your board in loopback test mode for normal operation of
the pstndiag tool.
4. Repeat steps 1 through 3 for all boards in your system.