Specifications

ISU AT Command Reference Phase VI AT Commands
Iridium Proprietary Version 2.45
20 June 2011 81
the AT command line interface.
 The message is terminated when a carriage return is entered.
Alternatively, the text message may be entered separately:
 Upon entering the command “AT+SBDWT”, the ISU will indicate to the FA that it is prepared
to receive the message by sending the string “READY<CR><LF>” (hex 52 45 41 44 59 0D
0A) to the FA.
 Once the FA receives the READY indication, the text message must be sent, terminated by a
carriage return.
 The length of the text message entered in this way is limited only by the maximum mobile-
originated message length of 1960 bytes.
 The mobile originated buffer will be empty upon power-up.
 If any data is currently in the mobile originated buffer, it will be overwritten.
Command Response:
For the “AT+SBDWT” form:
0 SBD message successfully stored in mobile originated buffer.
1 SBD message write timeout. No terminating carriage return was sent within the
transfer period of 60 seconds.
For the “AT+SBDWT=<text message>” form:
OK SBD message successfully stored in mobile originated buffer.
ERROR An error occurred storing SBD message in mobile originated buffer
10.12 +SBDDET - Short Burst Data: Detach
Exec Command: +SBDDET
Initiates an SBD session to detach the ISU from the Gateway.
Command Response:
+SBDDET:<status>,<error>
where:
<status>:
0 Detach successfully performed.
1 An error occurred while attempting the detach.
<error>:
Gateway-reported values:
0 Detach successfully performed.
1..4 Reserved, but indicate success if used.
5..14 Reserved, but indicate failure if used.
15 Access is denied.
ISU-reported values:
16 ISU has been locked and may not make SBD calls (see +CULK command).
17 Gateway not responding (local session timeout).