Hi Desma,
To help debug this you can use the telnet console: telnet 0 5037
To clean the logs: debug gsmtrx off. That information is not relevant and it usually flods the logs.
Then activate better logging: debug ybts level 10, debug mbts level 9. This should show if you actually see the registration requests.
Regarding automatic registration:
- if the MCC MNC on the SIM are different than the ones configured, the phone won't try to connect automatically
- if registration was rejected (depending on the error message) the phone won't try again , you can try to remove the sim and insert in back again. But some phones might not try again. You should use a different phone/sim.
- where is the subscriber information stored: subscribers in nipc mode/ regexp/ roaming mode to a core network?
If you suspect a radio issue:
https://yatebts.com/documentation/radio-access-network-documentation/radio-network-troubleshooting/radio-related-problems/