Sony Ericsson GM47, GM48 manual 18.13 AT+CHLD Call Hold and Multiparty, At+Ccwa=? +Ccwa, At+Chld=?

18. SUPPLEMENTARY SERVICES

Example

AT+CCWA=? +CCWA: (0-1)

OK

AT+CCWA? +CCWA: 0

OK

18.13 AT+CHLD Call Hold and Multiparty

Description	Command	Possible Responses
Request call related	AT+CHLD=<n>	•	+CME ERROR <err>
supplementary		•	OK
services		• ERROR
Show if the command	AT+CHLD=?	•	+CHLD: (list of
is supported			supported <n>s)

• +CME ERROR <err>

• OK

• ERROR

This command allows control of the following call related services:

•a call can be temporarily disconnected from the ME but the connection is retained by the network;

•multiparty conversation (conference calls);

•the served subscriber who has two calls (one held and the other either active or alerting) can connect the other parties and release the served subscriber's own connection.

Calls can be put on hold, recovered, released, added to conversation, and transferred similarly as defined in 3GPP TS 22.030.

This is based on the GSM/UMTS supplementary services HOLD (Call Hold; refer 3GPP TS 22.083 clause 2), MPTY (MultiParty; refer 3GPP TS 22.084) and ECT (Explicit Call Transfer; refer 3GPP TS 22.091). The interaction of this command with other commands based on other GSM/UMTS supplementary services is described in the GSM/UMTS standards.

Note! Call Hold and MultiParty are only applicable to teleservice 11.

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