Specifications
ISU AT Command Reference Phase III AT Commands
Iridium Proprietary Version 2.45
20 June 2011 55
7.9 +CLVL - Loudspeaker Volume Level Control
Exec Command: +CLVL=<level>
This command is used to select the volume of the internal loudspeaker of the ISU. <level> is an integer
type value with the smallest value representing the lowest sound level.
Read Command: +CLVL?
Query the current volume level settings. The response is in the form:
+CLVL: <level>
0 Equivalent to level 0 displayed on the ISU volume indicator.
1 Equivalent to level 1 displayed on the ISU volume indicator.
2 Equivalent to level 2 displayed on the ISU volume indicator.
3 Equivalent to level 3 displayed on the ISU volume indicator.
4 Equivalent to level 4 displayed on the ISU volume indicator.
5 Equivalent to level 5 displayed on the ISU volume indicator.
6 Equivalent to level 6 displayed on the ISU volume indicator.
7 Equivalent to level 7 displayed on the ISU volume indicator.
8 Equivalent to level 8 displayed on the ISU volume indicator. [9555 / 9555A only]
9 Equivalent to level 9 displayed on the ISU volume indicator. [9555 / 9555A only]
10 Equivalent to level 10 displayed on the ISU volume indicator. [9555 / 9555A only]
Test Command: +CLVL=?
List the supported volume level settings. The response is in the form:
+CLVL: (supported <level>s)
This command does not support command concatenation on the 9555 and 9555A Handsets.
Note: In the 9555 and 9555A Handsets, the range of supported volume levels is different depending on
whether audio is routed to analog or digital (using AT+CAR command). The supported range for digital
audio is 000-007, the supported range for analog audio is 000-010. The correct range for the current audio
routing will be returned by the test command.
7.10 +CMUT - Mute Control
Exec Command: +CMUT=<n>
This command is used to enable and disable the uplink voice muting during a voice call. <n> can take one
of the following values:
0 mute off
1 mute on
Read Command: +CMUT?
Query the current mute setting. The response is in the form:
+CMUT: <n>
Test Command: +CMUT=?
List the supported mute settings. The response is in the form:
+CMUT: (supported <n>s)