Specifications

Chapter 7 – Call-Related Commands
Multi-Tech Systems, Inc. AT Commands for EDGE (E1) Modems (S000474A) 110
7.25 AT+CRC Set Cellular Result Codes for Incoming Call
Indication
Description: The AT+CRC command controls whether or not to use the extended format of incoming
call indication.
<mode>=1 may lead to a connection failure if the application (e.g., WinFax) waits for the
default URC.
Syntax: Test Command: AT+CRC=?
Response: +CRC: (list of supported<mode>s)
OK
ERROR
Read Command: AT+CRC?
Response: +CRC: <mode>
OK
ERROR
Write Command: AT+CRC=[<mode>]
Response: OK
ERROR
Unsolicited Result Codes:
URC 1
RING
Indicates incoming call to the TE if <mode>=0.
URC 2
+CRING: <type>
Indicates incoming call to the TE if <mode>=1.
Parameter:
<mode> This value can be stored with AT&W and can be displayed with AT&V.
0 Disable extended format. Default. (This is the factory default value and can be restored to
'0' with AT&F). It is also the defaulted value if the parameter is omitted (0 will be
assumed).
1 Enable extended format
<type>
“REL ASYNC“ Asynchronous non-transparent
“VOICE“ Voice
“GPRS“ <PDP_type>, <PDP_addr> [,[<L2P>][,<APN>]] GPRS network request for PDP context
activation
Notes:
• This command is not PIN protected.
• This command is supported in airplane mode.
7.26 AT+CSNS Single Numbering Scheme
Description: The AT+CSNS command enables the ME to accept incoming calls when no bearer
capability information is provided with the call; e.g., single numbering scheme calls or calls
originating from analog devices.
Syntax: Test Command: AT+CSNS=?
Response: +CSNS: (list of supported<mode>s)
OK
Read Command: AT+CSNS?
Response: +CSNS: <mode>
OK
Write Command: AT+CSNS=[<mode>]
Response: OK
ERROR
+CME ERROR: <err>
Parameter:
<mode> Parameter is non-volatile.
0 Voice: Each call received without bearer element is assumed to be speech. Default. This is the
defaulted value if the parameter is omitted (0 will be assumed).
4 Data: Each call received without bearer element is assumed to be a data call.
Please take into account that the bearer service parameters set with AT+CBST apply to all data
calls including those received without bearer capability.