Specifications

ISU AT Command Reference Phase I AT Commands
Iridium Proprietary Version 2.45
20 June 2011 20
5.20 Vn - Verbose Mode
Set the response format of the ISU, which may be either numeric or textual.
0 Numeric responses.
1 Textual responses (default).
5.21 Wn - Error Correction Message Control
Set the format of the CONNECT messages.
0 Upon connection, the ISU reports the DTE speed (default).
1 Upon connection, the ISU reports the line speed, the error correction protocol and the DTE
speed in that order.
2 Upon connection, the ISU reports the DCE speed.
5.22 Xn - Extended Result Codes (Initial implementation; revised in Phase III)
Select the response set to be used by the ISU when informing the DTE of the results of a command or data
call.
0 OK, CONNECT, RING, NO CARRIER, NO ANSWER and ERROR.
1 As X0 plus CONNECT x, where x is the DTE speed.
2 As X1 plus NO DIALTONE.
3 As X2 plus BUSY.
4 As X3 plus CARRIER x, PROTOCOL: and COMPRESSION:, where x is the line speed
(default).
Notes:
1) The Wn command limits which connection related responses will be reported.
2) The CONNECT response is used to inform of a data call connection; OK response is used to
inform of a voice call connection.
3) DAV connections start out as a voice call and will produce an OK response followed by a
CONNECT response when the call automatically transitions to data mode.
5.23 Yn - Long Space Disconnect
Enable or disable the generation and response to long space disconnect.
No action, compatibility only.
Any value for n is accepted.
5.24 Zn - Soft Reset
Reset the ISU to a user-stored configuration.
0 Restores user configuration 0.
1 Restores user configuration 1.