BandLuxe
®
M280 Series HSUPA Module Datasheet
49
D.10.2 SYNTAX
Command
Possible response(s)
+CHLD=[<n]
+CME ERROR: <err>
+CHLD= ?
[+CHLD: (list of supported <n>s)]
D.10.3 PARAMETERS
<n>
: integer type; equals to numbers entered before SEND button in 3GPP TS 22.030 [19] subclause 4.5.5.1
NOTE: The "directory number" case shall be handled with dial command D, and the END case with hangup command
H (or +CHUP). The 4*"directory number" case is handled with +CTFR command.
D.10.4 Examples
test command example:
AT+CHLD=2
(put first call on hold and answer the second one)
OK
AT+CHLD=1
(release the second (active) call and recover the first(held) call)
OK
query command example:
AT+CHLD= ?
+CHLD :(0,1,1x,2,2x,3,4)
OK
D.11 AT$CPI – Request current call status
D.11.1 DESCRIPTION
Standard AT cCLCC can not meet the implementation requirement because it is not an unsolicited command.
User has to poll the call status. It wastes the computing power.
We offer two unsolicited commands to reflect current call status. It is easier for MMI designer to implement the dialer
application.
D.11.2 SYNTAX
Command
Possible response(s)
$CPI=<n>
$CPI=?
$CPI= 0, 1
$CPI?
$CPI = <n>
Unsolicited call progress
indication format
$CPI: <cid>, <dir>, <stat>, <mode>, <mpty>, <tch>, <number>, <type> <CR><LF>
D.11.3 PARAMETERS
<n>:
0 no unsolicited call progress indication report to TE
1 enable the unsolicited report function
<cId>:
integer type; call identification number as described in 3GPP TS 22.030 [19] subclause 4.5.5.1;
<dir>:
0 mobile originated (MO) call
1 mobile terminated (MT) call
