MultiModemDSVD User Guide | 4 AT Commands, | ||||
Register | Unit | Range | Default | Description | |
S18 | seconds | 0 | Sets the length of time that the modem con- | ||
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| ducts an &T test before it returns to the | |
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| command mode. If the value is zero, the test | |
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| must be terminated from command mode | |
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| by issuing an &T0 or H command. When | |
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| S18 is | |
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| message upon test termination. | |
S24 | seconds | 0 | Sets the length of time that the modem op- | ||
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| erates in normal mode with no detected | |
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| telephone or serial port activity before en- | |
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| tering | |
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| reset upon any serial port or telephone line | |
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| activity. | |
S25 | 10 ms | 5 | Sets the length of time that the modem ig- | ||
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| nores DTR while taking the action specified | |
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| by &D. | |
S29 | 10 ms | 70 | Sets the length of time that the modem goes | ||
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| modifier (!) in the dial string. | |
S30 | 10 ms | 0, | 0 | Sets the length of time that the modem | |
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| waits before disconnecting when no data is | |
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| sent or received. A value of zero disables | |
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| the timer. | |
S32 | decimal | 17 | Sets the ASCII code for the XON character. | ||
S33 | decimal | 19 | Sets the ASCII code for the XOFF character. | ||
S35 | decimal | 0 | 0 disables, 1 enables the V.25 data calling | ||
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| tone, which allows remote data/fax/voice | |
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| discrimination. | |
S36 | decimal | 7 | LAPM Failure Control. Specifies the fall- | ||
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| back action to take in the event of an LAPM | |
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| negotiation failure. These fallback options | |
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| are initiated immediately upon connection | |
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| if S48 = 128. If an invalid number is entered, | |
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| S36 acts as if the default value has been en- | |
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| tered. (See S48.) | |
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| 0 | Modem disconnects. |
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| 1 | Modem stays online and a direct |
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| mode connection is established. |
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| 2 | Reserved. |
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| 3 | Modem stays |
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| mode connection is established. |
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| 4 An MNP connection is attempted and | |
if it fails, the modem disconnects.
5 An MNP connection is attempted and if it fails, a direct mode connection is established.
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