Microhard Systems MHX-900, Руководство по эксплуатации

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8 MHX-900 Operating Manual: Chapter 3 Configuration Options
Note: If you want to send more than one command line, wait for a response
before entering the AT prefix at the start of the next command line.
To re-execute the previous command, enter A/. The modem will execute
the previous command line.
For the AT command protocol, an escape sequence consists of three
consecutive escape codes preceded and followed by at least 1 second of
inactivity. Typically, the ‘+’ character is used as the escape code.
+++ preceded and followed by 1 second of inactivity
3.1 AT Commands
Several AT Commands are supported by the MHX-900 module. The
following is a short description of all available commands. ‘*’ denotes
standard factory settings.
A Answer
The A command causes the modem to attempt to connect with another
remote modem.
D Dial
Using the D command, the modem will set itself for master point to point
mode, and then try to synchronize with the modem address specified in the
command (Dxxxx). Register S105 is overwritten with value xxxx. Note -
DT or DP are also value (tone dial or pulse dial).
E Command Echo
Your modem is preset to return (or echo) commands to the host
microprocessor when in Command Mode.
E0 No Command Echo
* E1 Command Echo
I Identification
The I command returns various modem information settings.
I0 Product Code (MHX-900)
I1 3 Digit computed checksum
I2 Issue ROM Check (OK or ERROR)
I3 Product Identification (Firmware Version)
I4 Not Supported
I5 Firmware Copyright
O On-line Mode
The O command attempts to communicate with a remote modem.