Advantech ARK-1388V User Manual page 91

7. Execute the commands below to check signal and related connection informa-
tion.
! AT + COPS? (check the connecting condition with local telecom system)
! +COPS: 0,2,46692 (if connect condition is okay, it shows 46692 automatically
(46692 represents your local telecom system vendor)
! OK (auto answer)
! AT+CSQ : (check single strength)
! +CSQ: 18,0 (higher value represents the stronger signal)
! OK (auto answer)
81 ARK-1388V User Manual