35
MAN-147-0018-A
Troubleshooting a Call Test failure
There are a number of reasons why a Call test may fail.
The following points should be checked before calling HWM support for assistance:
Possible Problem
Solution
Network Busy due to excessive traffic. Commonly
occurs around schools and at peak travel times.
Retry the test after a few minutes.
Network signal not available at your location. Not
all Cell masts carry data traffic
Relocate the logger to an area that has a
data service or change to a different
network provider.
Network signal not strong enough.
For 2G and 3G networks, you need a CSQ
(reported by the Call test) of at least 8 for reliable
communications.
For 4G networks, check the RSRP and RSRQ values
are suitable, as described in the IDT user guide.
Relocate the antenna if possible or try
alternative antenna configurations.
APN settings incorrect.
Check with your network operator that you
have the correct settings for your SIM.
If you continue to experience problems with communication, you may need to check
the network coverage in your location.
