User guide

Developers guidelines | AT commands
38 June 2010
AT+CVHU Voice hangup control
AT+CLCC List current calls
<value> Description
0 Returns from online command state to online data
state
Description: Selects whether ATH or “drop DTR” will cause a voice connection to be
disconnected or not. “Voice connection” may also refer to alternating
mode calls that are currently in voice mode.
Note: When <mode> = 2, this command must be used in conjunction with
the V.25ter, Serial Asynchronous Automatic Dialing and Control, command
&D. Otherwise &D is ignored.
Set command: AT+CVHU=[<mode>]
Read command: AT+CVHU? Displays the current <mode> setting.
Test command: AT+CVHU=? Shows if the command is supported.
Test command
response: +CVHU (list of supported <mode>s)
Parameter:
<mode>:
<mode> Description
0 “Drop DTR” is ignored but OK response given. ATH
disconnects the call
1 “Drop DTR” and ATH are ignored but OK response
is given
2 “Drop DTR” behaves according to &D setting. ATH
disconnects the call
Description: Returns the list of current calls. If command succeeds but no calls are
available, no information response is sent to TE
.
Execution
command: AT+CLCC=[<mode>]
Execution command
response: [+CLCC:
<id1>,<dir>,<stat>,<mode>,<mpty>[,<number>,<type>[,<alpha>[,<priority
>]]] [<CR><LF>
+CLCC:
<id2>,<dir>,<stat>,<mode>,<mpty>[,<number>,<type>[,<alpha>[,<priority
>]]]
[...]]]
Test command: AT+CLCC=? Shows if the command is supported.
Parameters:
<idx>: