Multi-Tech Systems GPRS (MTMMC-G) 사용자 설명서

Chapter 13 – Specific AT Commands  

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

120 

 

Description: 

This command allows the data rate for bearer data to be configured for outgoing and incoming calls. 

Values:  

<out_coding_type>: Data Coding Type for Outgoing Calls. 

0 

FR 

 

Default incoming voice calls rate 

1 HR 

FR 

 

2 FR 

HR 

 

3 FR 

HR 

 

 

<in_coding_type>: Data Coding Type for Incoming Calls. 

0 HR 

 

1 

FR 

Default incoming data calls rate 

 
Command syntax: AT+WDR=  <out_coding_type>[,<in-coding_type>] 

AT+WDR= [<out_coding_type>],<in-coding_type> 

AT+WDR?   +WDR: <out_coding_type>[,<in-coding_type> 
Note: <out_coding_type> is related to outgoing calls, and <in_coding_type to incoming calls. 

AT+WDR=? +WDR: 

(0-2),(0-2) 

Note: If Half Rate is available in both directions

AT+WDR=? +WDR: 

(0),(1) 

OK 
Note: If Half Rate is notavailable. 

AT+WDR=1 
Note: Configure data type FR, HR with HR 
preferred for outgoing calls 
(<in_coding_type> parameter is omitted) 

OK 
Note: Bearer is configured 

AT+WDR=1 
Note: Configure data type FRfor incoming 
calls (<out_coding_type> parameter is 
omitted) 

OK 
Note: Bearer is configured 

AT+WDR=3 
Note: Illegal value 

+CME ERROR: 3 
Note: Syntax error 

AT+WVR? 
Note: Ask for the current values 

+WVR: 1,1 
OK