TC45 AT Command Set
9.7 AT+CCWA
s
m
obile
TC45_ATC_V02.02
Page 218 of 461
4/16/04
Confidential / Released
8
SMS
16
Data circuit sync
32
Data circuit async
64
Dedicated packet access
128
Dedicated PAD access
1...[7]...255
Combination of some of the above classes. For example, the default setting 7
represents the sum of the integers 1, 2 and 4 (CF for voice, data and fax). The
value 255 covers all classes. If parameter "class"is omitted, the default value 7
is used.
0
Call waiting service is not active
1
Call waiting service is active
Phone number of waiting caller in the format specified by parameter
Type of address octet in integer format (refer to GSM 04.08, subclause 10.5.4.7)
145
includes international access code character '+'
129
Otherwise
0
CLI valid
1
CLI has been withheld
2
CLI is not available
Notes
• If the active call is a CSD call, and a waiting call is received, then the ME produces a BREAK while still in
online mode, and displays
- the +CCWA URC (as above) when the ME goes back to command mode while the waiting call is still active
and can be accepted;
- or the ^SCWA URC (as above) when the ME goes back to command mode after the waiting call has
ended.
• With the AT+CHLD command, it is possible to establish a multiparty call or to set the active voice call on hold
and then accept a waiting voice call (not possible with fax and data call). See also
• Users should be aware that if call waiting is activated (
=1), the presentation of URCs needs to be
enabled, too (
=1).
Otherwise, on the one hand, a waiting caller would be kept waiting due to lack of BUSY signals, while, on the
other hand, the waiting call would not be indicated to the called party.
• The AT+CCWA command offers a broad range of options according to the GSM specifications. However,
when you attempt to enable call waiting for a
for which the service is not provisioned or not sup-
ported , the setting will not take effect regardless of the response returned. The responses in these cases vary
with the network (for example "OK", "Operation not allowed", "Operation not supported" etc.). To make sure
<status>
(num)
<calling number>
(str)
<type of number>
(num)
<CLI validity>
(num)