Appendix C Hayes AT Command Reference
RFI-9256 Radio Modem User Manual
Page 86 of 109
Appendix C Hayes AT Command Reference
C.1 Radio Commands
C.1.1
“AT?” Menu Mode
This command enables the menu system on the current Hayes port. When the menu is exited the radio will
return to AT command mode.
C.1.2
“ATD” Dial
This command dials a remote unit. The basic dialling command is:
ATD<address><extension>
Where
<address>
is the address of the remote unit, and
<extension>
is the extension number to dial. For
a list of extension numbers see section 5.3.3 on page 34.
NOTE
: When dialling radio modems with a single digit unit address, a leading zero must be added (eg 01
for unit with address 1).
Hyphens, spaces, and colons can be used to make the command more readable, however these will be
ignored by the radio. For example, the command
ATD30200001
is equivalent to
ATD 30-2000:01
.
Dial commands cannot be concatenated with other AT commands. More information can be found in the
section Connection Management on page 34.
C.1.3
“ATE” Echo
The echo command enables or disables the echoing of input characters in local command state.
Command
Description
ATE0
Disable local command echo.
ATE1
Enable local command echo.
Table 21: ATE Echo commands
C.1.4
“ATH” Hang Up
The hang-up command forces the radio to terminate the current dial-up connection.
C.1.5
“ATI” Information
The information commands can be used to return various information about the radio. The list of commands
are shown in Table 22.
