5 Status Registers & Result Codes
In most
S-Registers "ATSn=x"
Command | Function & Description | Range | Ref. |
S0 | Number of rings before Auto Answer. 0 value disables auto- | ATA | |
| answer. |
|
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S1 | Ring counter. |
| |
S2 | ASCII value of Escape character. |
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S3 | ASCII value of Carriage Return character. |
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S4 | ASCII value of Line Feeder character. |
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S5 | ASCII value of Backspace character. |
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S6 | Waiting time before blind dialing. (seconds) |
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S7 | Wait foe carrier after dial. (seconds) |
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S8 | Pause time for comma. (seconds) |
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S9 | Carrier detect response time. (1/10 seconds) |
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S10 | Delay between loss of carrier and |
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S11 | DTMF (Touch tone) tone duration. (1/10 seconds) |
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S12 | Escape guard time. (1/50 seconds) |
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S18 | Test timer. (seconds) |
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S25 | Delay to DTR. (1 second for sync mode 1; 0.01 for otherwise) |
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S26 | RTS to CTS delay interval. (0.01 seconds) |
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S30 | Inactivity disconnect timer. (0.1 seconds) |
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S-Register Definitions
S0 - Number of Rings to
Sets the number of the rings required before the modem automatically answers a call. Setting this register to zero disables
S1 - Ring Counter
S1 is incremented each time the modem detects a ring signal on the telephone line. S1 is cleared if no rings occur over an eight second interval.
S2 - Escape Character
S2 holds the decimal value of the ASCII character used as the escape character. The default value corresponds to an ASCII '+'. A value over 127 disables the escape process, i.e., no escape character will be recognized.
S3 - Carriage Return Character
Sets the command line and result code terminator character. Pertains to asynchronous operation only.
Status Registers & Result Codes 21