Chapter 1 – AT Commands, S-Registers, and Result Codes
Multi-Tech Systems, Inc. AT Commands for the MultiModem & SocketModem MT9234 Series (S000434H)
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+FCLASS
Fax Class Indication
Description:
Use this command to set the modem service class. The service class determines if
the modem is in data, FAX, or voice mode.
Syntax: AT+FCLASS
<Value>
Values:
+FCLASS=0
Selects data mode.
+FCLASS=1.0
Selects Class 1.0 FAX mode.
+FCLASS=1
Selects Class 1 FAX mode.
+FCLASS=2
Selects Class 2 FAX mode.
+FCLASS=2.0
Selects Class 2.0 FAX mode.
+FCLASS=2.1
Selects Class 2.1 FAX mode.
+FCLASS=8
Selects voice mode.
Reports
:
+FCLASS? Reports
current
or selected options.
+FCLASS=?
Reports
supported
options.
Result Codes:
OK or ERROR
+GCAP
Complete List of Capabilities Request
Description:
Use this command to display the modem's supported capabilities. The +GCAP
command is an action command that always generates an OK result code.
Syntax: AT+GCAP
Sample
Responses
+GCAP: +FCLASS, +MS, +ES, +DS, for a data modem that supports all capabilities
listed. Where:
+FCLASS
(Class 1 and Class 2 facsimile DCE control)
+MS
+M commands (Modulation Control: +MS and +MR commands)
+ES
+E commands (Error Control: +ES, +EB, +ER, +EFCS, +ETBM)
+DS
+D commands (Data Compression: +DS and +DR)
+GCI=
Country of Installation
Description:
Use this command to set the modem country/region code.
Syntax: AT+GCI=<country
code>
Reports
:
+GCI?
Reports current or selected option.
+GCI=?
Reports
supported
options.
Result Codes:
OK or ERROR
+GMI
Manufacturer Identification Request
Description:
Displays the modem product manufacturer.
Syntax: AT+GMI?
Reports
:
+GMI?
Reports current or selected option.
Result Codes:
OK when using the +GMI and +GMI? syntax.
ERROR when using the +GMI=? syntax.
+GMM Model
Identification
Request
Description:
Displays the modem identity string and driver version number.
Syntax:
AT+GMM? or AT+GMM=?
Reports
:
+GMM?
Reports current or selected options.
+GMM=?
Reports
supported
options.
Result Code:
OK
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