
MultiModemDID User Guide |
| Chapter 4 - AT Commands, |
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| @ Wait for quiet answer. Causes modem to wait for a ring |
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| back, then 5 seconds of silence, before processing next |
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| part of command. If silence is not detected, the modem |
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| returns a NO ANSWER code. |
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| ^ Disable data calling tone transmission. |
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| $ Detect AT&T call card “bong” tone. The character should |
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| follow the phone number and precede the user’s call card |
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| number: ATDT1028806127853500$123456789. |
Command: | DS=n Dial Stored Telephone Number | |
Values: |
| n = 0, 1, 2 |
Default: |
| none |
Description: |
| Dials a number previously stored in directory number y by the |
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| &Zn=x command. Example: ATDS=3. |
Command: | En | Echo Command Mode Characters |
Values: |
| n = 0 or 1 |
Default: |
| 1 |
Description: | E0 | Does not echo keyboard input to the terminal. |
| E1 | Does echo keyboard input to the terminal. |
Command: | Fn | Echo Online Data Characters |
Values: |
| n = 0, 1 |
Default: |
| 1 |
Description: | F0 | Enables online data character echo. (Not supported.) |
| F1 | Disables online data character echo (included for backward |
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| compatibility with some software). |
Command: | Hn | Hook Control |
Values: |
| n = 0 or 1 |
Default: |
| 0 |
Description: | H0 | Goes |
| H1 | Goes |
Command: | In | Information Request |
Values: |
| n = |
Default: |
| None |
Description: | I0 | Displays default speed and controller firmware version. |
| I1 | Calculates and displays ROM checksum (e.g., B399). |
| I2 | Checks ROM and verifies the checksum, displaying OK or ER- |
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| ROR. |
| I3 | Displays default speed and controller firmware version. |
| I4 | Displays firmware version for data pump (e.g., 17). |
| I5 | Displays the board ID: software version, hardware version, and |
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| the country ID in hexadecimal format (e.g., s0503a01V, 0, 34). |
| I9 | Displays the country code in decimal format (e.g., 52). |
| I11 Displays diagnostic information for the last modem connection, | |
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| such as DSP and firmware version, link type, line speed, serial |
speed, type of error correction/data compression, number of past retrains, etc.
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