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Chapter 13 – Specific AT Commands
Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I) 120
Data Rate +WDR
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.
Data Coding
Type
Preferred
Type
Other Supported Types Default Values
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.
Data Coding
Type
Type Default Values
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.
Command Possible responses
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