Iridium 9523 - CEER - Extended Error Report; CHUP - Hangup Call; CMGD - Delete SMS Message

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Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice
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<mode> can take on the following values:
0 Disable data compression reporting (default)
1 Enable data compression reporting
If reporting is enabled, the following intermediate result codes are transmitted by the Iridium 9523:
+DR: NONE No data compression
+DR: V42B Data compression in use in both directions
+DR: V42B RD Data compression in use in receive direction only
+DR: V42B TD Data compression in use in transmit direction only
Read Command: +DR?
Query the current reporting level setting. The response is in the form:
+DR: <mode>
Test Command: +DR=?
List the supported parameter settings. The response is in the form:
+DR: (supported <mode>s)
5.7.33 +CEER - Extended Error Report
Exec Command: +CEER
Execution command causes the phone to return information text <report> which offers the user an
extended report of the reason of the failure in the last unsuccessful call setup (originating or answering) or
the reason for last call release. The response is in the form:
+CEER: <report>
An example of a <report> is:
User alerting, no answer
5.7.34 +CHUP - Hangup call
This command causes the phone to hangup the current data or voice call. If hungup in this manner then
the incoming call will not be forwarded to voice-mail. To allow a rejected call to be forwarded to voice-
mail (if configured) use ATH0 instead.
5.7.35 +CMGD - Delete SMS Message
Exec Command: +CMGD=<index>
Execution command deletes message from preferred message storage <mem1> (<mem1> is the
selected message storage from the +CPMS command) location <index>. If deleting fails, final result code
+CMS ERROR: <cms_err> is returned.
An example of an error report is:
+CMS ERROR: <cms_err>
where <cms_err> can be one of the numbers below:
1 unassigned number
8 operator barred