Call Control
3-64 AT Commands Reference Manual June 30, 20 08
Example
AT+CSSN=? // test command
+CSSN: (0-1),(0-1)
OK
AT+CSSN=0,0 // disable both options
OK
AT+CSSN=1,0 // set n value as enabled, m disabled
OK
AT+CSSN?
+CSSN: 1,0 // display the current n & m values
OK
+CSSI: 1 // displayed after mobile originated call setup of call forward and n
enable
+CSSU: 2 //displayed when a call has been placed on hold (during the call) using
the +CHLD AT command and m enable
5Call on hold has been released
(during a voice call; not a
supplementary service
notification)
Yes
6Forward check supplementary
service message received (can be
received at any time)
Yes
7Call is being connected with the
remote party in an alerted state
using an explicit call transfer
operation (during a voice call).
Yes
8Call 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:
<number>String type phone
number of format defined by
<type>
<type>Type of address octet in
integer format (refer to GSM
04.08 [8], subclause 10.5.4.7)
<subaddr>String type subaddress
of format defined by <satype>
<satype>Type of subaddress
octet in integer format (refer to
GSM 04.08 [8], subclause
10.5.4.8)
Yes
9Deflected call
(mobile-terminated call setup) No
Table 3-33:+CSSU Notification Values (Cont.)
Value Description G24 Support