Airvana ipBTS C30, Installation And Commissioning Manual

Page: 59 / 90

Chapter 4
l
RN commissioning
Performing Loopback tests
Airvana ipBTS C30 Installation and Commissioning, Release 4.0 4-19
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
does not equal the
Number of
Transmitted Frames
, or if there are any errors counted, the node has a fault and
you need to contact Airvana’s Technical Assistance Center. This is the end of this
procedure.
• If the
Number of Received Frames
does equal the
Number of
Transmitted Frames
and there are no errors, you must troubleshoot the
following:
• the backhaul cable
• the physical loopback installed earlier in the loopback testing process
• the backhaul wiring into the punch block
• any external equipment the backhaul cable is attached to, for example the DSX
6. Enter
>ipBts-XXX_SC> reset
to reset the ipBTS C30 and return to operational
mode.
The
ipBts-XXX>
prompt displays.
Allow the ipBTS C30 to reboot to completion, skipping the diagnostic mode required for
loopback testing.
Removing physical loopbacks
After Loopback testing is complete, remove all external, physical loopbacks installed earlier to
restore the system to operational mode.
CAUTION
Failure to remove any loopbacks installed earlier results in failed backhaul links.
The Loopback testing process is also complete.
Procedure
1. Place the laptop on a secure surface.