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

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Chapter 15 – GPRS Commands  
Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I) 
166 
 
Show PDP Address   +CGPADDR 
Description: 
The execution command returns a list of PDP addresses for the specified context identifiers.  
 
The test command returns a list of defined <cid>s. 
Values: <cid> 
A numeric parameter which specifies a particular PDP context definition. If no <cid> is 
specified, the addresses for all defined contexts are returned. 
<PDP_address>   A string that identifies the modem in the address space applicable to the PDP. The 
address may be static or dynamic. For a static address, it will be the one set by the 
+CGDCONT command when the context was defined. For a dynamic address it will be the 
one assigned during the last PDP context activation that used the context definition 
referred to by <cid>. <PDP_address> is omitted if none is available. 
Syntax: Command 
Syntax: 
AT+CGPADDR 
Command 
Possible response(s)
AT+CGPADDR=[<cid> [,<cid> [,…]]] +CGPADDR: <cid>,<PDP_addr> 
[<CR><LF>+CGPADDR: <cid>,<PDP_addr> 
[...]] 
OK 
AT+CGPADDR=? 
+CGPADDR: (list of defined <cid>s) 
OK 
Example: 
In this example, 1 <cid> is defined: 
AT+CGPADDR=1 
+CGPADDR=1,"107.210.5.4" 
OK 
AT+CGPADDR=? 
+CGAPDDR= (1) 
OK 
AT+CGPADDR 
+CGPADDR: 1, 
 
 
Cellular Result Codes   +CRC 
Description:  
This command enables a more detailed ring indication, in case of 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. 
+CRING: GPRS 
GPRS network request for PDP context activation 
If the modem is unable to announce to the DTE the network's request (for example it is in V.25ter online 
data state) the modem reject the request. No corresponding unsolicited result code is issued when the 
modem returns to a command state. 
Values:   
No parameters 
Syntax: Command 
Syntax: 
AT+CRC
 
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