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CHAPTER 5: ASYNCHRONOUS DCE CONFIGURATION
AT Commands
The AT mode is included in the 7500 primarily to support commonly used communication packages
operating on PCs. The following table shows the commands which the AT mode supports. Note: in
some cases, you may have to set compatible options for your particular communications package in
command mode before entering AT mode.
Table I:
AT Commands and Applications
Command*
ata
atd <string> or
atdt<string> or
atdp<string>
ate or ate0
ate n
ath
ati n
ato
atq or atq0
atqn
ats m=value
at =value
ats m
at? or ats m?
atv or atv0
atv n
a /
atz
at&c or at&c0
at&c n
at&d or at&d0
at&d n
* Where n is used, any digit other than 0 can be substituted. Where m is used, any digit from 0 - 5
can be substituted.
92
To answer an incoming call
To dial the string
To disable command echo
To enable command echo
To disconnect data calls from the AT local mode
To request identification number for communication package
To return to data state from AT mode
To allow result codes of numeric and verbal options
To disable functionality of the numeric or verbal result codes
To program the S-register indicated by "m" to the value specified
To program the S-register pointed to with the value specified
To point to the m S-register (see next table)
To read the value of an S-register
To enable numeric result codes
To enable verbal result codes
To repeat last AT command issued
To return data options to default
To set the DCD option to ignore
To set the DCD option to follow
To set the DTR option to ignore
To set the DTR option to follow
Application
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