Keepalive BC 660 is there and how to use?

Technical Subjects
1

Hi,
We are testing our modem with the BC660, and we are experiencing a disconnection every few days. We will be able to restore the connection if we press the restart. We are looking for a way to identify if the modem is connected to the network and conduct a reset for the module if it is not connected for some time.

Any ideas?
Thanks

2

you can run:

AT+CEREG?
if return +cereg:0,1 or +cereg:0,5,indicates that the module is successfully registered with the network
or
AT+CGPADDR
If the IP address is returned successfully, the network registration is successful

3

When the module is disconnected, try AT+QPLMNS? and post here the result. Prior that you can post result of AT+QCFG="OOSScheme". Current module firmware stops searching for networks once it cannot find any suitable network during network scan and this can be the issue you’re experiencing.

4

Thanks for your replay,
We are using MQTT and we would like to get a call back once our keepalive is not replied by the broker.

Thanks
Amir