Multitech MultiModem ZBA Series At Commands Reference Manual page 14

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Multi-Tech Systems, Inc. AT Commands for the MT5634 Family of Products (S000272J)
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\Qn Flow Control Selection
n = 0, 1, or 3
3
\Q0 Disables flow control (same as &K0).
\Q1 XON/XOFF software flow control (same as &K4).
\Q2 CTS-only flow control. Not supported.
\Q3 RTS/CTS hardware flow control (same as &K3).
\Tn Inactivity Timer
n = 0, 1–255
0
\Tn Sets the time (in minutes) that the modem waits after the last character is sent or
received before it disconnects. A value of zero disables the timer. Applies only in
buffer mode.
Note: You can also set the inactivity timer by changing the value of S30.
\Vn Protocol Result Code
n = 0, 1, or 2
1
\V0 Disables the appending of the protocol result code to the DCE speed.
\V1 Enables the appending of the protocol result code to the DCE speed.
\V2 Same as \V1.
-Cn Data Calling Tone
n = 0 or 1
0
-C0 Disables V.25 data calling tone to deny remote data/fax/voice discrimination.
-C1 Enables V.25 data calling tone to allow remote data/fax/voice discrimination.
%A Adaptive Answer Result Code Enable
n = 0 or 1
0
The %A command controls whether the DATA and FAX result codes will be sent by the
modem. The modem must be in fax mode for this command to work. Also, the modem must
be set to +FAA=1, which enables the modem to distinguish between a fax and a data call.
When these commands are enabled, the modem sends DATA to the computer when it
detects data tones, and FAX when it detects fax tones. These strings are used by some
servers to select the appropriate communication program.
%A0 Disables adaptive answer result codes.
%A1 Enables adaptive answer result codes.
Note: For descriptions of the +FAA= and other fax commands, see the Multi-Tech Fax Class
2.1 Developer's Guide.
%B View Numbers in Blacklist
n/a
If blacklisting is in effect, AT%B displays the numbers for which the last call attempted in the
previous two hours failed. In countries that do not require blacklisting, the ERROR result
code appears.
%Cn Data Compression Control
n = 0 or 1
1
%C0 Disable sV.42bis/MNP 5 data compression.
%C1 Enables V.42bis/MNP 5 data compression.
%DCn AT Command Control
n = 0 or 1
0
%DC0 The modem responds to AT commands.
%DC1 The modem ignores AT commands.
Note: The modem will respond to AT%DC for 10 seconds after it is turned on.
Chapter 1 – AT Commands
14