Specifications

Chapter 1 – AT Commands, S-Registers and Result Codes
Multi-Tech Systems, Inc. SocketModem MT5600SMI/MT5656SMI Reference Guide (S000306B) 5
Data Commands
The modem will respond to the commands detailed below. Parameters applicable to each command are
listed with the command description.
Generic Modem Control Commands
Command: Z Soft Reset and Restore Profile
Description: Causes the modem to perform a soft reset and restore (recall) the
configuration profile. If no value is specified, zero is assumed.
Default: None
Values: Number corresponding to the selected profile:
Z0 Soft reset and restore stored profile 0.
Z1 Soft reset and restores stored profile 1.
Result Codes: OK
Otherwise ERROR
Command: +FCLASS Select Active Service Class
Description: Selects the active service class (mode).
Default: 0
Defined Values: +FCLASS=0 Select Data Mode (Default).
+FCLASS=1 Select Facsimile Class 1 Mode.
+FCLASS=1.0 Select Facsimile Class 1.0 Mode.
+FCLASS =2 Fax Service Class 2
+FCLASS=2.0 Fax Service Class 2.0
+FCLASS=2.1 Fax Service Class 2.1
+FCLASS=8 Select Voice Mode.
+FCLASS=10 Reserved.
Note: Fax Class 2 and Voice Mode apply to MT5656SMI only
Result Codes: OK
Otherwise ERROR
Report Commands: +FCLASS? Reports Current or Selected Values
+FCLASS=? Reports Range of Parameters
Command: +VCID Caller ID (CID)
Description: Controls the reporting and presentation of data associated with the Caller
ID services in the Incoming Call Line ID (ICLID) data format for the next
call. (U.S. only)
Default: 0
Defined Values: +VCID0 Disable Caller ID reporting.
+VCID1 Enables Caller ID with formatted presentation to the DTE. The
modem presents the data items in a <Tag><Value> pair
format. The expected pairs are date, time, name, and caller
code (telephone number).
+VCID2 Enables Caller ID with unformatted presentation to the DTE.
Report Commands: +VCID?
Reports the Mode
+VCID=? Reports Range of Parameters