AT command
Description
AT+COPS=
[<mode>
[,<format>
[,<oper>>[,
< AcT>]]]]
Forces an attempt to select and register the GSM
\
UMTS net-
work operator.
<mode>:
•
0 = Automatic choice
•
1 = Manual choice
<format>:
•
0 = Alphanumeric long form
•
1 = Short format alphanumeric
•
2 = Numeric, 5 digits
<oper>:
•
Network operator in format defined by <format>
<AcT>:
Access technology selected:
•
0 = GSM
•
2 = UTRAN
AT+COPS?
Returns the currently registered network operator.
AT+COPS=?
Returns a list of all available network operators in form of:
<stat>, long alphanumeric <oper>, short alphanumeric
<oper>, numeric <oper>,<AcT>:
<stat>:
Operator availability:
•
0 = Unknown
•
1 = Available
•
2 = Current
•
3 = Forbidden
<AcT>:
Access technology selected:
•
0 = GSM
•
1 = GSM Compact
•
2 = UTRAN
AT
+CPIN=<pin>[,
<newpin>]
Sends the PIN to the phone.
AT+CPIN?
Returns the status of the PIN request:
•
READY = Phone can be used
•
SIM PIN = PIN is not set, phone not ready for use.
•
SIM PUK = PUK is required to use the device
•
ERROR = No SIM card inserted
AT+CSQ
Reports received signal quality indicators in form of:
<signal strength><bit error rate>
AT+CSQ=?
Returns the supported ranges.
AT
+FLO=<type>
Selects the flow control behaviour of the serial port in both
directions.
•
0 = Flow control None
•
1 = Flow control Software (XON-XOFF)
•
2 = Flow control Hardware (CTS-RTS)
AT Commands
1033
