Specifications

HE863 family AT commands reference guide

80377ST10083a Rev.4 – 2012-02-01

+CCWA - Call Waiting

+CCWA: <number>,<type>,<class>,[<alpha>][,<cli_validity>]

where:

<number> - string type phone number of calling address in format specified by

<type>

<type> - type of address in integer format

<class> - see before

<alpha> - string type; alphanumeric representation of <number> corresponding to

the entry found in phonebook; used character set should be the one

selected with +CSCS.

<cli_validity>

0 - CLI valid

1 - CLI has been withheld by the originator

2 - CLI is not available due to interworking problems or limitations of originating

network

Note: if parameter <cmd> is omitted then network is not interrogated.

Note: in the query command the class parameter must not be issued.

Note: the difference between call waiting report disabling (AT+CCWA = 0,1,7)

and call waiting service disabling (AT+CCWA = 0,0,7) is that in the first case the

call waiting indication is sent to the device by network but this last one does not

report it to the DTE; instead in the second case the call waiting indication is not

generated by the network. Hence the device results busy to the third party in the

case while in the 1

case a ringing indication is sent to the third party.

Note: The command AT+CCWA=1,0 has no effect a non sense and must not be

issued..

AT+CCWA?

Read command reports the current value of the parameter <n>.

AT+CCWA=?

Test command reports the supported values for the parameter <n>.

Reference 3GPP TS 27.007

3.5.3.3.12. Call Holding Services - +CHLD

+CHLD - Call Holding Services

AT+CHLD=[<n>]

Set command calls can be put on hold, recovered, released, added to conversation,

and transferred.This is based on the GSM/UMTS supplementary services HOLD,

MPTY (i.e Multi Party) and ECT (Explicit Call Transfer). The interaction of this

command with other commands

Parameter:

<n>

0 - release all held calls or set User Determined User Busy for a waiting call; if

both exists then only the waiting call will be rejected

1 - release all active calls and accepts the other (held or waiting)

Note: In the scenario: An active call, a waiting call and held call, when the active

call is terminated, we will make the Waiting call as active.