AT command interface
Version 8 dated 15.03.00 62
Siemens Information and Communication Products
A
AT+CCWA Call waiting control
Test command
AT+CCWA=?
Response
+CCWA: (list of supported <n>s) OK
Parameter
see set command
Read command
AT_CCWA?
Response
+CCWA: <n> OK
Parameter
see set command
Execute command
AT+CC-
WA=[<n>] [,<mo-
de>[,<class>]]]
Response
TA controls the call waiting supplementary service. Activation, deactivation and status query are
supported. It should be possible to abort the command when network is interrogated.
If <mode><>2 and command successful
OK
If <mode>=2 and command successful
+CCWA:<status>,<class1>[<CR><LF>+CCWA:<status>,<class2>[...]] OK
Note:
<status>=0 should be returned only if service is not active for any <class>.
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
<n> 0 disable presentation of unsolicited result code
1 enable presentation of unsolicited result code
<mode> when <mode> parameter not given, network is not interrogated
0 disable
1 enable
2 query status
<class> is a sum of integers each representing a class of information
1 voice (telephony)
2 data (usually refers to all bearer services,
if<mode>=2, this may refer only to some bearer services)
4fax
7
all classes
<status> 0 not active
1 enable
Unsolicited result code
An unsolicited result code is returned when "Call Waiting at the TA" (and Call Waiting) are enab-
led and the system attempts to terminate call setup during an established call:
+CCWA: <
number>
,<typ
e>,<cla
ss>[
,<alph
a>]
Parameter
<number> string type phone number of calling address in format specified by <type>
<type> type of address octet in integer format; 145 when dialling string includes
international access code character "+", otherwise 129
<alpha> optional string type alphanumeric representation of <number>
corresponding to the entry found in phonebook
Reference
GSM 07.07
Note
Function for Data Fax does not make sense
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