CommScope Technologies LLC IPBTS-C30-1900 Manual Do Utilizador
Chapter 4
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RN commissioning
Performing Loopback tests
Airvana ipBTS C30 Installation and Commissioning, Release 4.0
4-17
After the test is complete, the following data table displays for each backhaul tested.
Number of Transmitted Frames : x
Number of Received Frames : x
Number of Error Frames : x
Frames without valid Test ID : x
Frames with invalid Data : x
Frame Error Rate : x
Error Counters
Rx Frame Length Violations ... x
Rx Non-octet alignment ... x
Rx Abort Frames ... x
Rx CRC Errors ... x
Number of Received Frames : x
Number of Error Frames : x
Frames without valid Test ID : x
Frames with invalid Data : x
Frame Error Rate : x
Error Counters
Rx Frame Length Violations ... x
Rx Non-octet alignment ... x
Rx Abort Frames ... x
Rx CRC Errors ... x
•
If the Number of Received Frames equals the Number of Transmitted
Frames, proceed to
Frames, proceed to
•
If the Number of Received Frames does not equal the Number of
Transmitted Frames, or if there are any errors counted, you need to
troubleshoot the backhaul. Continue with
Transmitted Frames, or if there are any errors counted, you need to
troubleshoot the backhaul. Continue with
Troubleshooting failed backhaul links
This procedure explains how to run the internal loopback test on backhaul links that failed the
external loopback test. This section also outlines what to do based on the test results: If the
internal loop back passes, troubleshoot the cables and loopback devices.
external loopback test. This section also outlines what to do based on the test results: If the
internal loop back passes, troubleshoot the cables and loopback devices.
NOTE
If the internal loopback fails, the node may be faulty and you should call Airvana’s
Technical Assistance Center.
Technical Assistance Center.
Follow this procedure to perform basic troubleshooting on failed backhaul links.
1. If the backhaul links are T1 or E1, enter the following CLI command to specify the
backhaul links you want to set to internal loopback mode:
>ipBts-XXX_SC>mmb <port memory locations> 04
Where: <port memory locations> are the backhaul links to place into internal
loopback mode. See
loopback mode. See