HE863 family AT commands reference guide
80377ST10083a Rev.6 – 2012-11-12
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Page 64 of 229
+CHLD - Call Holding Services
supported
3 - adds a held call to the conversation
4 - connects the two calls and disconnects the subscriber from both calls
(Explicit Call Transfer)(ECT).
6 - puts an active call on hold or an held call to active, while another call is
waiting
7 - disconnect users in multiparty without accepting incoming call
8 - release all calls
AT+CHLD=?
Test command returns the list of supported
<n>s
.
+CHLD: (0,1,1X,2,2X,3)
Reference
3GPP TS 27.007
Note
ONLY for VOICE calls
3.5.3.3.13.
Unstructured Supplementary Service Data - +CUSD
+CUSD - Unstructured Supplementary Service Data
AT+CUSD=
[<n>[,<str>
[,<dcs>]]]
Set command allows control of the Unstructured Supplementary Service Data
(USSD [3GPP TS 02.90/22.090]).
Parameters:
<n>
- is used to disable/enable the presentation of an unsolicited result code.
0 - disable the result code presentation in the
DTA
1 - enable the result code presentation in the
DTA
2 - cancel an ongoing USSD session (not applicable to read command
response)
<str>
- string type USSD-string (when <str> parameter is not given, network is
not interrogated)
<dcs>
- indicates Cell Broadcast Data Coding Scheme. Its default value is 0.
Note: the unsolicited result code enabled by parameter
<n>
is in the format:
+CUSD: <m>[,<str>,<dcs>]
to the TE
where:
<m>
:
0 - no further user action required (network initiated USSD-Notify, or no further
information needed after mobile initiated operation).
1 - further user action required (network initiated USSD-Request, or further
information needed after mobile initiated operation)
2 - USSD terminated by the network
3 - other local client has responded
4 - operation not supported
5 - network time out
AT+CUSD?
Read command reports the current value of the parameter
<n>
AT+CUSD=?
Test command reports the supported values for the parameter
<n>
Reference
3GPP TS 27.007