ZyXEL Communications Comet 336P, Руководство пользователя

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Basic Modem Operation 13
AT Command Set/Type Example
Fax and Voice AT+ commands AT+FCLASS=2
S-Register command ATS0=1
S-Register inquiry command ATS0?
You may browse the lists of available commands for each command set by using the
on-line help commands: AT$, AT*$, and AT&$.
Modem Result Codes
When you execute or try to execute an AT command, your modem sends a result code to
let you know whether the command was executed. An OK result code means the AT
command you sent was executed. If you receive an ERROR code, it means the
command was invalid.
The Comet also provides result codes that show:
•
Whether or not a Dial Tone was detected when the modem originated a call.
•
If a busy signal was detected when the modem originated a call.
•
If a remote telephone ring was detected when dialing.
•
The speed, protocol, and error control/data compression method used.
•
If your modem has detected an incoming ring.
Result codes can originate from any of eight result code sets. The ATXn command lets
you choose which set of result codes your modem uses. By default, your modem uses
result codes equivalent to the ATX5 command.
Viewing S Register Values
Status registers (or "S-registers") contain values that determine the modem’s operating
characteristics. Whenever you send an AT command to your modem, you are actually
changing the value of an S-register.
You can use the Sr? command to view the value of S-register ‘r’. For example, to view
the value of S-register S0, which controls auto-answering, type ATS0? and press Enter.
The modem responds with a three-digit character showing the value of this register,
followed by OK. A value of 002, for example, means your modem will auto-answer
incoming calls after the second ring.
Changing S Register Values
You can use the ATS0=n command to change the value of an S-register.