Multitech MTCMR-H User's Guide Page 139

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Chapter 3 – Supported GSM/WCDMA AT Commands
High Speed HSPA-H4 AT Commands Reference Guide (Document S000483A) 139
Values: <n> Requested Operation
0 Disable the result code presentation. Default
1 Enable the result code presentation
2 Cancel session (not applicable to read command response)
<m> USSD Status
0 No further user action required (network initiated USSD-Notify, or no further
information needed after mobile initiated operation)
1 Further user action required (network initiated USSD-Request, or further
information needed after mobile initiated operation)
2 USSD terminated by network
3 Other local client has responded
4 Operation not supported
5 Network timeout
<str> USSD String
Converted in the selected character set (please refer to +CSCS); String type
<dcs> Data Coding Scheme
Integer type
Parameter Storage: The <n> parameter is stored in EEPROM using the AT&W command. The default
value can be restored using AT&F.
Examples:
Command Responses
AT+CUSD=?
+ CUSD: (0-2)
OK
AT+CUSD=1 "#123#" OK
+CUSD: 1,"02/08 report:0h04mn00S",15 Note: USSD response from network
AT+CUSD? +CUSD=1
OK
D V.25 Dial Command
Description: This command causes the modem to perform whatever actions are necessary to establish
communication between the DTE and the external PDN.
The V.25ter 'D' (Dial) command causes the modem to enter the V.25ter online data state
and, with the DTE, to start the specified layer 2 protocol. The modem returns CONNECT to
confirm acceptance of the command prior to entering the V.25ter online data state. No
further commands may follow on the AT command line.
The detailed behavior after the online data state has been entered is described briefly in
clause 9, for IP, of GSM 07.60. GPRS attachment and PDP context activation procedures
may take place prior to or during the PDP startup if they have not already been performed
using the +CGATT and +CGACT commands.
Syntax:
Command Responses
Action Command:
ATD*<GPRS_SC_IP>[***<cid>] #
CONNECT
No Read and Test Commands
Values: <GPRS_SC_IP> GPRS Service Code for IP
Digit string (value 99), which identifies a request to use the GPRS with IP
(PDP types IP and PPP)
<cid> PDP Context Identifier
Range: 1-4; Integer type
Parameter Storage: None
Examples:
Command Responses
A
TD*99***1 # CONNECT
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