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Chapter 5 – AT Commands, S-Registers, and Result Codes
Multi-Tech Systems, Inc. SocketModem MT5600SMI Developer’s Guide 36
DTE-Modem Interface Commands
The parameters defined in this section control the operation of the interface between the DTE and
modem.
Command: E Command Echo
Description: The modem enables or disables the echo of characters to the DTE. The
parameter value, if valid, is written to S14 bit 1.
Default: 1
Defined Values: E0 Disables command echo.
E1 Enables command echo.
Result Codes: OK
Otherwise ERROR
Command: Q Quiet Result Code Control
Description: Enables or disables the sending of result codes to the DTE. The parameter
value, if valid, is written to S14 bit 2.
Default: 0
Defined Values: Q0 Enables result codes to the DTE.
Q1 Disables result codes to the DTE.
Result Codes: OK
Otherwise ERROR
Command: V Result Code Form
Description: Selects the sending of short-form or long-form result codes to the DTE.
The parameter, if valid, is written to S14 bit 3.
Default: 1
Defined Values: V0 Enables short-form (terse) result codes. Line feed is not issued
before a short-form result code.
V1 Enables long-form (verbose) result codes.
Result Codes: OK
Otherwise ERROR
Command: W Connect Message Control
Description: This command, in conjunction with S95 bits 0, 2, 3, and 5 (bits 2, 3, and 5
can be written directly by the host or by the +MR, +ER, and +DR
commands, respectively), control the format of CONNECT messages. The
actual result code messages reported reflect the W command setting and
the S95 bit settings. (Also see +MR, +ER, and +DR commands.) The W
parameter value, if valid, is written to S31 bits 2 and 3.
Default: 0
Defined Values: W0 Upon connection, the modem reports only the DTE speed (e.g.,
CONNECT 19200). Subsequent responses are disabled.
W1 Upon connection, the modem reports the modulation, line speed, the
error correction protocol, and the DTE speed, respectively.
Subsequent responses are disabled.
W2 Upon connection, the modem reports the DCE speed (e.g.,
CONNECT 14400). Subsequent responses are disabled.
Result Codes: OK
Otherwise ERROR