Multi-Tech Systems GPRS (MTMMC-G) User Manual
Chapter 4 – General AT Commands
Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I)
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Request IMSI +CIMI
Description:
Reads and identifies the IMSI (International Mobile Subscriber Identity) of the SIM card. The PIN may
need to be entered before reading the IMSI.
need to be entered before reading the IMSI.
Values: No
parameters
Syntax:
AT+CIMI
Command
Possible responses
AT+CIMI
Note: Read the IMSI
Note: Read the IMSI
208200120320598
OK
Note: IMSI value (15 digits), starting with MCC (3 digits) / MNC (2 digits,
3 for PCS 1900)
OK
Note: IMSI value (15 digits), starting with MCC (3 digits) / MNC (2 digits,
3 for PCS 1900)
Card Identification +CCID
Description:
Orders the product to read the EF-CCID file on the SIM card.
Values: No
parameters
Syntax: AT+CCID
Command
Possible responses
AT+CCID
Note: Get card ID
Note: Get card ID
+CCID: “123456789AB111213141”
Note: EF-CCID is present, hexadecimal format
Note: EF-CCID is present, hexadecimal format
AT+CCID?
Note: Get current value
Note: Get current value
+ CCID: “123456789AB111213141”
Note: Same result as +CCID
Note: Same result as +CCID
AT+CCID= ?
Note: Get possible value
Note: Get possible value
OK
Note: No parameter but this command is valid
Note: No parameter but this command is valid
Note:
If there is no EF-CCID file present on the SIM, the +CCID answer will not be sent, but the OK message will
be returned.
Capabilities List +GCAP
Description:
Displays the complete list of capabilities.
Values: No
parameters
Syntax: AT+GCAP
Command
Possible responses
AT+GCAP
Note: Get capabilities list
Note: Get capabilities list
+GCAP: +CGSM +FCLASS
OK
Note: Supports GSM and FAX commands
OK
Note: Supports GSM and FAX commands
Repeat Last Command A/
Description:
Repeats the previous command. Only the A/ command itself cannot be repeated.
Values: No
parameters
Syntax: A/
Command
Possible responses
A/
Note: Repeat last command
Note: Repeat last command