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

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Chapter 11 – Data Commands  
Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I) 
95 
 
Cellular Result Codes   +CRC 
Description:  
This command shows more detailed ring information for an incoming call (voice or data). Instead of the 
string “RING”, an extended string is used to indicate which type of call is ringing (e.g. +CRING: VOICE). 
 
These extended indications are: 
 
+CRING: ASYNC 
for asynchronous transparent 
 
+CRING: REL ASYNC 
for asynchronous non-transparent 
 
+CRING: VOICE 
for normal speech. 
 
 
Values: <mode> 
 
 Disable extended reports 
 Enable extended reports 
Syntax: Command 
syntax: AT+CRC=<mode> 
Command 
Possible responses
AT+CRC=0 
Note: Extended reports disabled 
OK 
Note: Command valid 
AT+CRC=1 
Note: Extended reports enabled 
OK 
Note: Command valid 
AT+CRC? +CRC: 
OK 
AT+CRC=? +CRC: 
(0,1) 
OK 
 
 
DTE-DCE Local Rate Reporting   +ILRR 
Description:  
This parameter controls whether or not the extended-format “
+ILRR:<rate>” information text is 
transmitted from the DCE to the DTE. The 
<rate> reported represents the current (negotiated or 
renegotiated) DTE-DCE rate.  
 
If enabled, the intermediate result code is transmitted in an incoming or outgoing data call, after any 
data compression report, and before any final result code (CONNECT).  
Values: <value> 
0   Disable local port rate report 
1   Enable local port rate report 
<rate> Can take the following values: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 
Kbps. 
Syntax: Command 
syntax: 
  AT+ILRR = <value> 
Command 
Possible responses
AT+ILRR=0 
Note: Local port rate report disabled
OK 
Note: Command valid 
AT+ILRR=1 
Note: Local port rate report enabled 
OK 
Note: Command valid 
AT+ILRR? +ILRR: 
OK 
AT+ILRR=? +ILRR: 
(0,1) 
OK