Filter
Top Products
APPENDIX A: AT COMMAND SET
DEFINITY Communications System
7400B Data Module
Page A-8
User’s Guide
Command:
I
Function:
Request product code or ROM checksum.
Type:
immediate
Arguments:
The I command accepts one of three arguments as follows:
0 - The data module displays the decimal number 249, followed by a
carriage return and line feed.
1 - The data module displays the ROM checksum as two four-digit
hexadecimal values, followed by a carriage return and line feed.
2 - The data module displays OK, followed by a carriage return and
line feed.
S-Register:
none
Example:
ati0
[ Enter ]
Comments:
In the example, the 7400B Data Module will return its product ID code
as the value 249.
See Also:
none
Command:
O
Function:
Return to the on-line mode.
Type:
immediate
Arguments:
No argument or an argument of 0 (zero) causes the data module to
return from command mode to on-line mode, if a data call is still
active.
S-Register:
none
Example:
ato
[ Enter ]
Comments:
The 7400B Data Module accepts an argument of 1 but treats it the
same as no argument or an argument of 0.
See Also:
Chapter 4, “Operation and Configuration”; the +++ command in this
appendix.