Iridium Communications, Inc.
Iridium 9523 Product Developers' Guide
Revision 2.6
5.7 Command Set Description
5.7.1
AT - Attention Code
This is the prefix for all commands except A/ and +++. When entered on its own, the Iridium 9523 will
respond OK.
5.7.2
A/ - Repeat Last Command
Repeat the last command issued to the Iridium 9523 unless the power was interrupted or the unit is reset.
A/ is not followed by <CR>.
5.7.3
+++ - Escape Sequence
The escape sequence is used to transfer from in-call data mode to in-call command mode without
disconnecting from the remote modem. After a pause, the Iridium 9523 will respond with OK. Register S2
can be used to alter the escape character from +, the factory default, to any hexadecimal value in the
range 0 to 255.
5.7.4
En - Echo
Echo command characters.
0
Characters are not echoed to the FA
1
Characters are echoed to the FA (default)
5.7.5
On - Online
Enter in-call data mode. This is used to return to in-call data mode from in-call command mode using an
existing connection. An error is reported if on-hook.
0
Switch from in-call command mode to in-call data mode
Any value for n accepted
5.7.6
Qn - Quiet Mode
Control Iridium 9523 responses.
0
Iridium 9523 responses are sent to the FA (default)
1
Iridium 9523 responses are NOT sent to the FA
5.7.7
Vn - Verbose Mode
Set the response format of the Iridium 9523, which may be either numeric or textual.
0
Numeric responses
1
Textual responses (default)
5.7.8
Wn - Error Correction Message Control
Set the format of the CONNECT messages.
0
Upon connection, the Iridium 9523 reports the FA speed (default)
Iridium Communications, Inc.
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