I wanted to ask about an issue we are having on Teltonika 955 equipped with a SIM.
The system has worked fine for a couple of days, providing a stable data connection, but after that we see that the router can not establish a stable connection with the mobile data network. In practice, from the logs we notice that router keep continuously disconnected and connected with the mobile data network changing its assigned IP. The connection is highly unstable as the router perform this connection issue within a frequency of seconds, making Teltonika unable to operate it remotely. In some moments of the day, the connection is stable for tens of minutes. The SMS functionality and the Network is always registered as it always responds to the SMS, but the data connection is OFF.
Things we have checked so far:
- All the signal strength indicators are good, confining in "Good" and "Excellent" intervals as defined in the manual. The cell-tower however is close to the deployment point.
- Double-checked the APN and all the parameters of SIM data connection, but seems fine. The SIM has no data limit.
- Forced Teltonika to use 2G, 3G, 4G and automatic selection but nothing happened.
- Performed several reboots of Teltonika but did not help.
If it is needed, I can provide the logs in a private chat.
Can you please advise on this issue?