Call Control
3-50 G24-L AT Commands Reference Manual April 15, 2008
Supplementary Services
This set of commands enables control over supplementary service notifications, including
Structured and Unstructured Supplementary Service Data (USSD) data.
+CSSN, Supplementary Service Notifications
This command handles the enabling and disabling of supplementary service-related,
network-initiated, notifications.
Command
Type
Syntax Response/Action Remarks
Set
+CSSN=[<n>[,<m>]] OK
+CME ERROR: <err>
The Set command enables/disables the
display of notification result codes to
the TE.
When <n>=1 and a supplementary
service notification is received after a
mobile-originated call setup, the
+CSSI: notification is sent to the TE
before any other mobile-originated call
setup result codes. When several
different notifications are received
from the network, each of them
receives its own +CSSI result code.
When <m>=1 and a supplementary
service notification is received during
a mobile-terminated call setup or
during a call, or when a forward check
supplementary service notification is
received, the unsolicited result code
+CSSU: is sent to the TE. In case of a
mobile-terminated call setup, a CSSU
is sent after every +CLIP result code
(“+CLIP, Calling Line Identification”
on page 3-19). When several different
events are received from the network,
each of them receives its own +CSSU
result code.
Note:
The values for <n> and <m>
are not saved after power
cycle.
Read
+CSSN? +CSSN: <n>,<m>
The Read command displays the
current supplementary service
notification setting.
Test
+CSSN=? +CSSN: (0-1), (0-1)
The Test command displays the list of
supported CSSN values.
