Specifications

ISU AT Command Reference Phase VI AT Commands
Iridium Proprietary Version 2.45
20 June 2011 80
1 CLIR provisioned in permanent mode
2 Unknown (e.g. no network, etc.)
3 CLIR provisioned in temporary mode, defaulting to presentation restricted
4 CLIR provisioned in temporary mode, defaulting to presentation allowed
10.10 +IPR - Fixed DTE Rate (Revised)
Set Command: +IPR=<rate>[,<autoflag>]
Set the data rate at which the ISU will accept commands. The change in data rate takes effect after the
result code (e.g., OK) is received by the DTE.
<rate> takes the following values:
1 600 bps
2 1200 bps
3 2400 bps
4 4800 bps
5 9600 bps
6 19200 bps (default)
7 38400 bps
Note: The use of 38400 bps with ISU models “9505” or “9522” is not recommended because the ISU can
not handle this rate without losing some bits of data.
Note: ISU models 9505A and 9522A have the capability to automatically adjust to changes in the DTE
rate and override the +IPR setting when dissimilar. This capability is controlled by the <autoflag>
setting.
<autoflag> takes the following values:
0 Fixed rate – automatic rate adjustment is disabled.
1 Automatic rate adjustment is enabled. (default)
Read Command: +IPR?
Query the current data rate and automatic rate adjustment setting. The response is in the form:
+IPR: <rate>,<autoflag>
Test Command: +IPR=?
List the supported data rates. The response is in the form:
+IPR: (supported <rate>s),(supported <autoflag>s)
10.11 +SBDWT - Short Burst Data: Write a Text Message to the ISU (Revised)
Exec Command: +SBDWT=[<text message>]
This command is used to transfer a text SBD message from the FA to the single mobile originated buffer in
the ISU.
The text message may be entered on the command line:
 For example, “AT+SBDWT=hello”.
 The length of <text message> is limited to 120 bytes. This is due to the length limit on