ABORT 'NO CARRIER'
ABORT 'ERROR'
ABORT 'NO DIALTONE'
ABORT 'BUSY'
ABORT 'NO ANSWER'
'' AT
OK AT+GTRAT?
OK AT+CMEE=2
OK AT+CSQ
OK AT+CPIN?
OK AT+COPS?
OK AT+CGDCONT=1,\"IP\",\"cmnet\"
OK ATDT*99#
CONNECT ''
