This section contains information about:
The commands listed below control whether result codes are displayed, and in what format they are displayed.
| If you want the modem to | Command |
| Display result codes. | ATQ0 |
| Do not display result codes. | ATQ1 |
| Do not display result codes while in Answer mode. See the Modes of Operation section in this guide for a description of modes. | ATQ2 |
| Display result codes in numeric form. | ATV0 |
| Display result codes in verbal form. | ATV1 |
| Display sets of result codes. Refer to the Result Code Meanings and Sets. |
ATXn (Default ATX7) |
Note: DIP switch 3 overrides the Q0-Q1 setting, DIP switch 2 overrides the Vn setting, and DIP switch 7 overrides the Q2 setting.
Note: ARQ (Automatic Repeat Request) is used in this manual to denote calls that use error control.
| For your modem to | Command |
|
NOT display ARQ result codes. This setting pertains only to the display of codes and not to ARQ function. |
AT&A0 |
|
Display ARQ result codes. If the Courier 56K Business Modem is set to X0 and the connection rate is 1200 bps-56 Kbps, a result code is displayed. |
AT&A1 |
| Display modulation indicators (HST, V32, VFC, V34, V90, or V92). If your software cannot handle the added modulation information, select &A1 or &A0. | AT&A2 |
| Display error control (LAPM, HST, MNP, or NONE) and data- compression type (V42 bis, MNP5) indicators. | AT&A3 (Default) |
Note: The numeric identifiers for &A3 result codes are the same as those used for &A2. If you request numeric display (V0) and &A3, you won’t be able to distinguish &A2 from &A3 codes. Also, &A3 result codes may not be compatible with some software.