The modem responds to the following AT% and AT\ command options.
The letters AT (or at) must precede all commands except A/ and +++. Factory-default options are underlined.
Command |
Option |
Description |
%B
|
Maximum Modulation Rate Sets the maximum rate that the modem uses when connecting in a data modulation mode for performing functions such as Internet access or file transfer |
|
|
%B0 |
Maximum modem rate that the modem supports |
|
%B1 |
300 bps |
|
%B2 |
1.2 Kbps |
|
%B3 |
2.4 Kbps |
|
%B4 |
4.8 Kbps |
|
%B6 |
9.6 Kbps |
|
%B7 |
7.2 Kbps |
|
%B8 |
12.0 Kbps |
|
%B9 |
14.4 Kbps |
|
%B11 |
16.8 Kbps |
|
%B12 |
19.2 Kbps |
|
%B13 |
21.6 Kbps |
|
%B14 |
24.0 Kbps |
|
%B15 |
26.4 Kbps |
|
%B16 |
28.8 Kbps |
|
%B17 |
31.2 Kbps |
|
%B18 |
33.6 Kbps |
|
%B19 |
32.0 Kbps |
|
%B20 |
34.0 Kbps |
|
%B21 |
36.0 Kbps |
|
%B22 |
38.0 Kbps |
|
%B23 |
40.0 Kbps |
|
%B24 |
42.0 Kbps |
|
%B25 |
44.0 Kbps |
|
%B26 |
46.0 Kbps |
|
%B27 |
48.0 Kbps |
|
%B28 |
50.0 Kbps |
|
%B29 |
52.0 Kbps |
|
%B30 |
54.0 Kbps |
|
%B31 |
56.0 Kbps |
|
%B32 |
58.0 Kbps |
|
%B33 |
60.0 Kbps |
|
%B34 |
28000 bps |
|
%B35 |
29333 bps |
|
%B36 |
30666 bps |
|
%B37 |
33333 bps |
|
%B38 |
34666 bps |
|
%B39 |
37333 bps |
|
%B40 |
38666 bps |
|
%B41 |
41333 bps |
|
%B42 |
42666 bps |
|
%B43 |
45333 bps |
|
%B44 |
46666 bps |
|
%B45 |
49333 bps |
|
%B46 |
50666 bps |
|
%B47 |
53333 bps |
|
%B48 |
54666 bps |
%C
|
Data Compression (DC) Mode Determines whether the modem implements methods of increasing the effective data rate by reducing the number of bits used to represent data |
|
|
%C0 |
Disable Compression |
|
%C1 |
Enable Compression |
%D
|
|
Disconnect Buffer Delay Controls the delay after detection of a disconnect request before the modem disconnects from the telephone line |
|
%D0 |
Disable Delay |
|
%Dn |
Delay for n Seconds (n = 1 to 255) |
%L |
|
Minimum Modulation Rate Sets the minimum rate that the modem uses when connecting in a data modulation mode. |
|
%L0 |
Minimum modem rate that the modem supports(300 bps) |
|
%L1 |
300 bps |
|
%L2 |
1.2 Kbps |
|
%L3 |
2.4 Kbps |
|
%L4 |
4.8 Kbps |
|
%L7 |
7.2 Kbps |
|
%L6 |
9.6 Kbps |
|
%L8 |
12.0 Kbps |
|
%L9 |
14.4 Kbps |
|
%L11 |
16.8 Kbps |
|
%L12 |
19.2 Kbps |
|
%L13 |
21.6 Kbps |
|
%L14 |
24.0 Kbps |
|
%L15 |
26.4 Kbps |
|
%L16 |
28.8 Kbps |
|
%L17 |
31.2 Kbps |
|
%L18 |
33.6 Kbps |
|
%L19 |
32.0 Kbps |
|
%L20 |
34.0 Kbps |
|
%L21 |
36.0 Kbps |
|
%L22 |
38.0 Kbps |
|
%L23 |
40.0 Kbps |
|
%L24 |
42.0 Kbps |
|
%L25 |
44.0 Kbps |
|
%L26 |
46.0 Kbps |
|
%L27 |
48.0 Kbps |
|
%L28 |
50.0 Kbps |
|
%L29 |
52.0 Kbps |
|
%L30 |
54.0 Kbps |
|
%L31 |
56.0 Kbps |
|
%L32 |
58.0 Kbps |
|
%L33 |
60.0 Kbps |
|
%L34 |
28000 bps |
|
%L35 |
29333 bps |
|
%L36 |
30666 bps |
|
%L37 |
33333 bps |
|
%L38 |
34666 bps |
|
%L39 |
37333 bps |
|
%L40 |
38666 bps |
|
%L41 |
41333 bps |
|
%L42 |
42666 bps |
|
%L43 |
45333 bps |
|
%L44 |
46666 bps |
|
%L45 |
49333 bps |
|
%L46 |
50666 bps |
|
%L47 |
53333 bps |
|
%L48 |
54666 bps |
\K |
|
Break Handling Method |
|
\K1 |
Destructive Expedited |
|
\K3 |
Non-destructive Expedited |
|
\K5 |
Non-destructive Non-expedited |
\N |
|
Error-Correction (EC) Mode |
|
\N0 |
Normal |
|
\N1 |
Direct |
|
\N4 |
LAP-M Only |
|
\N6 |
Reliable |
|
\N7 |
Auto-Reliable |
\Q |
|
DTE Flow Control |
|
\Q0 |
Disable |
|
\Q1 |
XON/XOFF (software flow control) |
|
\Q3 |
RTS/CTS (hardware flow control) |
\T |
|
Disconnect on DTE Inactivity |
|
\T0 |
Disable |
|
\Tn |
Disconnect after n minutes of inactivity by the computer; n = 0 to 255 |
\V |
|
Connect Message Format Determines which messages the modem generates at connection time |
|
\V0 |
Display DTE Rate |
\V1 |
||
\V2 |
Display DCE Rate |
|
\V3 |
DCE with EC/DC Message |
|
\V4 |
DCE with Modulation & EC/DC Message |
Table 1: AT% (Percent) and AT\ (Backslash) Commands