Problem: What are the AT Commands for Rockwell modem chip sets?

Solution:  To summarize AT command syntax:

• Multiple commands can be strung together in one line.
• Command lines cannot exceed 40 upper-lower-case characters (Do not mix upper- and lower-case letters).  Spaces and hyphens are ignored.
• Command lines must start with AT and end with a carriage return.
• A missing command parameter is assumed to be zero.  For example ATH is the same as ATH0.
• To switch to local AT command mode, type +++ and wait at least one second to enter AT commands, type ATO and press Enter to return to data mode.
• To switch to remote AT command mode, type %%%AT <enter> Take control of remote modem.  Type ATO and press Enter to return to data mode. If prompted for a remote password try MODEMSETUP
• The following chart summarizes usefule AT commands:

   

  Command	Function
  A/	On a line by itself without a carriage return repeats the previous command
  D (options) L P T W , @ R ; ! S=(0-3) ^	Dials telephone number Combined with the following modifiers: Redial last number Pulse dialing Tone Dialing    (For example ATDT5551212 dials 555-1212 in tone mode) Waits for dial tone Pause duration specified in S8 register (usually 2 seconds) Wait for at least 5 seconds of silence Command accpeted but no acted uppon Return to command mode after dialing (must be last) Go on hook for time specified in S29 register. Dial one of four numbers stored with &Zn Turn on calling tone.
  &V	Display the current profile

 

For further AT command information see rockwell.pdf

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