Specifications

ISU AT Command Reference Phase III AT Commands
Iridium Proprietary Version 2.45
20 June 2011 57
7.11 +CRC - Cellular Result Codes (Revised)
Set Command: +CRC=[<mode>]
Set the extended format of incoming data or voice call indication.
<mode> takes the following values:
0 Disable extended format (default).
1 Enable extended format.
If extended format is enabled, the unsolicited result code
+CRING: <type> is returned by the ISU instead
of RING, where <type> can be one of the following:
ASYNC asynchronous transparent
SYNC synchronous transparent
REL ASYNC asynchronous non-transparent
REL SYNC synchronous non-transparent
FAX facsimile
VOICE normal voice
Read Command: +CRC?
Query the current result code settings. The response is in the form:
+CR: <mode>
Test Command: +CRC=?
List the supported result code settings. The response is in the form:
+CR: (supported <mode>s)
7.12 +CVHU - Voice Hangup Control
Set Command: +CVHU=[<mode>]
Selects whether the Hn (hangup) or &Dn command shall cause a voice call connection to be disconnected
or not. <mode> can take one of the following values:
0 Ignore &Dn command specified reaction to DTR ON to OFF transitions. Disconnect
as reaction to Hn command. OK response given.
1 Ignore &Dn command specified reaction to DTR ON to OFF transitions. Ignore Hn
command. OK response given.
2 Comply with &Dn command specified reaction to DTR ON to OFF transitions.
Disconnect as reaction to Hn command (default).
Read Command: +CVHU?
Query the current voice control hangup settings. The response is in the form:
+CVHU: <mode>
Test Command: +CVHU=?
List the supported voice control hangup settings. The response is in the form:
+CVHU: (supported <mode>s)