At Mode Operation; Switching From Cmd Local Mode To At Mode; Suspending And Continuing Data Transmission During A Data Call; Exiting At Mode And Returning To Cmd Local Mode - AT&T 7500 User Manual

AT Mode Operation

The AT mode provides an interface similar to that available on many popular modems. In
particular, the AT mode is appropriate when using a PC with communications software that uses AT
commands. Since this mode is more limited than the CMD local mode, it should only be used when
absolutely required by the communications software.

Switching From CMD Local Mode to AT Mode

To switch to the AT local mode from the CMD local mode:
At the [ CMD: ] prompt, type &&h
The 7500 will respond:
[ AT COMMAND MODE ]
The AT Mode does not provide a prompt. It acknowledges most commands with "OK". Commands
used with the CMD local mode will not be recognized in the AT mode.

Suspending and Continuing Data Transmission During a Data Call

To suspend data transmission and return to AT mode, rapidly type:
attention sequence (default value: +++)
Data transmission has been suspended and you can now type AT commands.
To exit AT mode and return to data mode:
Type ato

Exiting AT Mode and Returning to CMD Local Mode

To exit AT mode and return to the CMD local mode, type:
at&&t
or
at&&a
If there is no data call active, the system will respond:
[ AT&& T ]
[ CALL STATUS: IDLE ]
[ Type H for help ]
[ CMD: ]
If there is a data call active, the system will respond:
[ AT&&T ]
[ DATA CALL ACTIVE ]
[ TYPE H FOR HELP ]
[ CMD: ]
CHAPTER 5: ASYNCHRONOUS DCE CONFIGURATION
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