User Manual

Exalt Communications, Inc.
Exalt i-Series Installation and Management Guide
5000001 91
2007-06-25
If the radio link has been operating without issues and is exhibiting new poor
performance behavior or becomes completely inoperative, the troubleshooting process
should pay close attention to any conditions that may have changed between the time
when the system was working without issue and the time when the issues started.
Also, it can be helpful to compare some performance parameters of the system before and
after the presence of issues. Often the source of the issues can be determined by
thoughtful consideration of changes, such as:
• Changes in weather, including high winds
• Changes made to the radio equipment, transmission system, or connected equipment
• New radio systems or electronic equipment the nearby radio or transmission system
• New construction nearby either end of the link, or along the path
• Tree growth, flooded fields, or changes in rivers/lakes along the path
Verify that configurations are set as follows:
• RF matches at each end of the link
• Bandwidth matches at each end of the link
• Link distance matches at each end of the link
• TDD Frame Length matches at each end of the link
• Endpoint Identifier is different at each end of the link (one end Radio A, one end
Radio B)
• Ethernet interfaces are enabled, as desired
• AUX Ethernet is set for in-band or out-of-band NMS, as desired
• T1/E1 enabling matches at each end of the link
• Link security key matches at each end of the link
Also, use the ExaltCalc tool in the design phase to determine the optimum setting for the
Bandwidth and TDD Frame Length parameters for the given link distance, and provides
guidance to the expected RF link performance, as well as throughput, latency, and
number of supported T1/E1 circuits.
Typical Indications of Issues
In many cases, microwave radio users do not notice changes or degradation to the radio
system until the radio system fails completely or becomes highly errored or significantly
intermittent. However, regular management of the radio system can help indicate changes
in performance that have not yet impacted user performance, but may impact
performance at a later date if left unchecked or unaddressed. The administrator can use
this as an opportunity to be proactive and monitor the radio link performance regularly,
watching for unexplained or unexpected changes in performance and trends in
performance changes.