Motorola g20 Developer's Manual page 35

AT
Command
+MMAR This command enables the accessory to change the status of an SMS message in
the g20 memory from "REC UNREAD" to "REC READ".
+MMGR This command enables the accessory to read SMS messages from the g20, but
does not change the read status of the messages.
+CMSS This command selects and sends pre-stored messages from message storage
<mem2> (selected with the +CPMS command).
+CMGW This command writes and saves messages in the g20 memory, <mem2> (selected
using the +CPMS command).
+CMGD This command enables the accessory to delete messages from the preferred g20
message storage <mem1> location <index>.
Network
Network Commands
+CSQ This command returns the signal strength received by the g20.
+CRLP These parameters are used when non-transparent data calls are originated.
+CREG This command enables/disables the network status registration unsolicited result
code.
+CGREG This command enables/disables the GPRS network status registration unsolicited
result code.
+COPS This command enables accessories to access the network registration information,
and the selection and registration of the GSM network operator.
Hardware Information
Hardware Information Commands
+CBC This command enables an accessory to query the battery charge level.
+CBAUD This command sets the request baud rate.
+CBAND This command changes the radio band. This command only returns OK and
performs no real action. It is used for backward compatibility only.
+GCAP This command requests the overall capabilities of the g20.
+MTDTR This command checks and outputs the physical current status of the DTR pin of the
RS232.
98-08901C68-O
Table 3. AT Commands (Continued)
Description
Product Features
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