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Multi-Tech Systems GPRS (MTMMC-G) Benutzerhandbuch

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Chapter 4 – General AT Commands 
Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I) 
14 
 
Product Serial Number   +CGSN 
Description: 
Allows the user application to get the IMEI (Interrnational Mobile Equipment Identity, 15-digit number) of 
the product.
 
 
Values:   
No parameters 
Syntax:   
AT+CGSN 
Command 
Possible responses
AT+CGSN 
 
Note: Get the IMEI 
012345678901234 
OK 
Note: IMEI read from EEPROM 
AT+CGSN 
Note: Get the IMEI 
+CME ERROR: 22 
Note: IMEI not found in EEPROM 
 
 
Select TE Character Set   +CSCS 
Description: 
Informs the modem which character set is used by the DTE. The modem can convert each character of 
entered or displayed strings. This is used to send, read or write short messages. See also +WPCS for 
the phonebooks’ character sets. 
Values: <Character 
Set> 
 
 
GSM 
GSM default alphabet. 
PCCP437 
PC character set code page 437. 
CUSTOM 
User defined character set (cf. +WCCS command). 
HEX 
Hexadecimal mode. No character set used; the user can read or write hexadecimal 
values. 
Default: GSM 
alphabet 
Syntax:   
AT+CSCS=<Character Set> 
Command 
Possible responses
AT+CSCS=”GSM” 
Note: GSM default alphabet 
OK 
Note: Command valid 
AT+CSCS=”PCCP437” 
Note: PC character set code  
OK 
Note: Command valid 
AT+CSCS=? 
 
Note: Get possible values 
+CSCS: ("GSM","PCCP437","CUSTOM","HEX") 
OK 
Note: Possible values 
 
 
Phonebook Character Set   +WPCS 
Description: 
Informs the modem which character set is used by the DTE for the phonebooks. The modem can 
convert each character of entered or displayed strings. This is used to read or write phonebook entries. 
See also +CSCS for the short messages character sets. 
Values:  
<Character 
Set> 
 
TRANSPARENT 
Transparent mode. The strings are displayed and entered as they are stored in 
SIM or in ME. 
CUSTOM 
User defined character set (cf. +WCCS command). 
HEX 
Hexadecimal mode. No character set used; the user can read or write 
hexadecimal values. 
Syntax:   
  AT+WPCS=<Character Set> 
Command 
Possible responses
AT+WPCS=”TRANSPARENT” 
Note: Transparent mode 
OK 
Note: Command valid 
AT+WPCS=”CUSTOM” 
Note: Custom character set 
OK 
Note: Command valid 
AT+WPCS=? 
 
Note: Get possible values 
+WPCS: ("TRANSPARENT","HEX","CUSTOM") 
OK 
Note: Possible values