AT Commands Reference Manual - wireless netcontrol GmbH

Call Control
Table 3-26: +CSSU Notification Values (Cont.)
Value Description H24 Support
5 Call on hold has been released
(during a voice call; not a
supplementary service
notification)
6 Forward check supplementary
service message received (can be
received at any time)
7 Call is being connected with the
remote party in an alerted state
using an explicit call transfer
operation (during a voice call).
8 Call has been connected with the
other remote party using an
explicit call transfer operation
(during a voice call or during
mobile-terminated call setup).
Number and subaddress
parameters may be present:
String type phone
number of format defined by
Type of address octet in
integer format (refer to GSM
04.08 [8], subclause 10.5.4.7)
String type subaddress
of format defined by
Type of subaddress
octet in integer format (refer to
GSM 04.08 [8], subclause
10.5.4.8)
9 Deflected call
(mobile-terminated call setup)
Yes
Yes
Yes
Yes
No
Example
AT+CSSN=?
+CSSN: (0-1),(0-1)
OK
AT+CSSN=0,0
OK
AT+CSSN=1,0
OK
AT+CSSN?
+CSSN: 1,0
OK
+CSSI: 1
+CSSU: 2
// test command
// disable both options
// set n value as enabled, m disabled
// display the current n & m values
// displayed after mobile originated call setup of call forward and n
enable
//displayed when a call has been placed on hold (during the call) using
the +CHLD AT command and m enable
3-50 H24 - AT Commands Reference Manual April 15, 2010