Multi-Tech Systems GPRS (MTMMC-G) User Manual

Chapter 12 – V.24 and V.25 Commands  

Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I) 

100 

Description:  

This command determines the local serial port start-stop (asynchronous) character framing that the 
DCE uses. 

0  

Autodetect (not supported) 

1  

8 Data 2 Stop (supported) 

<parity> parameter is ignored 

2  

8 Data 1 Parity 1 Stop (supported) 

If no

 <parity> provided, 3 is used by default as <parity> value 

3  

8 Data 1 Stop (supported) 

 

<parity> parameter is ignored 

4  

7 Data 2 Stop (supported) 

<parity> parameter is ignored 

5  

7 Data 1 Parity 1 Stop (supported) 

If no

 <parity> provided, 3 is used by default as <parity> value 

6  

7 Data 1 Stop (supported) 

<parity> parameter is ignored 

<parity>  

 

0  

Odd  

(supported) 

1  

Even  

(supported) 

2  

Mark  

(supported) 

3  

Space  

(supported) 

4  

None  

(supported) 

  All character framing formats settings of the serial interface (i.e., 801, 8E1, 8S1, 8N1, 7N1, 7O1, 

7E1, 7S1 and 7N2) are supported on autobauding operation.   

syntax: AT+ICF=  <format>[,  <parity>] 

AT+ICF?  
  

+ICF: 3,4 
OK 
Note: Current values 

AT+ICF=?  
  

+ICF: (1-6),(0-4) 
OK 
Note: Possible values  

AT+ICF=2,0  
   

OK 
Note: New values