AT Command Set
MC35_ATC_01_V05.00 Page 76 of 256 15.07.2002
Parameters of the URC
<number> String type phone number of calling address in format speci-
fied by <type>
<type> Type of address octet in integer format (refer to GSM 04.08
subclause 10.5.4.7)
<class> Indicates the class of the waiting call. See Write command for
possible values.
<CLI validity> 0 CLI valid
1 CLI has been withheld
2 CLI is not available
Reference
GSM 07.07,
GSM 02.04,
GSM 02.83
Note
· With the AT+CHLD command, it is possible to establish a multipart y call or
to set the active voice call on hold and then accept a waiting voice c all (not
possible with fax and data call). See also AT+CHLD in Chapter 4.16.
· The AT+CCWA command offers a broad range of options according to th e
GSM specifications. However, when you attempt to set a <class> which is
not provisioned or not supported for Call Waiting, the setting will not tak e ef-
fect regardless of the response returned. The responses in these cases var y
with the network (for example “OK”, “Operation not allowed”, “Operation not
supported” etc.). To make sure check the current Call Waiting settings with
<mode>=2.
· <class> 2 (data) comprises all those <class> values between 16 and 12 8,
that are supported both by the network and the MS. This means, a setting
made for <class> 2 applies to all remaining data classes (if s upported). In
addition, you can assign a different setting to a specific class. For ex ample,
you can activate Call Waiting for all data classes, but deactivate it for a spe-
cific data class.
· The AT+CCWA command has been implemented with the full set of <class>
parameters according to GSM 07.07. For actual applicability of SS “ call wait-
ing” to a specific service or service group (a specific <c lass> value) please
consult table A.1 of GSM 02.04