When you install a PTP820 link and found it is not working, you may use the following troubleshooting tips instead of waiting for customer support to help you.
1. Does both radio received expected RSL? If not, it could be:
a. alignment issue (you may have bad RSL on both end, or you may have bad RSL only on one end)
b. frequency configuration issue - for example, the radio does not support the frequency you entered. check the part number of the radio to make sure that your configured frequency is really supported by the radio. Note that the frequency you entered is the center frequency, you need to make sure that the whole channel you used is within the boundary of the supported frequency range.
c.wrong part used, you could have used the wrong radio for your link
d. improper installation
e. sometimes you have a 820C dual pole link and you only got V-Pole working, chances are that you could have improper installation and blocked the H-Pole. Make sure that the antenna interface is circular rather than directional
f. hardware problem. Perform a loopback test on the radio to see if there is hardware issue.
2. If both radio receives good RSL and your link is still not up. check MSE reading, if MSE is too high, e.g. >-35dB
it could be:
a. interference, could even be self interference if dual radio
b. XPI problem if the link is XPIC link
c. hardware issue (use loopback to check it out)
d. improper modulation(MRMC) configuration (the ends does not match with each other)
3. if your link is up with expected MRMC modulation mode and you cannot pass data, make sure that the Ethernet services are properly configured.