Specifications

AT Command Set Reference
Ver. 1.00
GSM1308AT001 Page 63 Ver. 1.00 – 10/29/2008
2.1.3.15. AT+CSSN Supplementary Service Notifications
Command Function This command refers to supplementary
service related network initiated
notifications. The set command
enables/disables the presentation of
notification result codes from TA to TE.
When <n>=1 and a supplementary service
notification is received after a mobile
originated call setup, intermediate result
code +CSSI: <code1>[,<index>] is sent to
TE before any other MO call setup result
codes are presented. When several
different <code1>s are received from the
network, each of them shall have 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, unsolicited
result code +CSSU:
<code2>[,<index>[,<number>,<type>[,<s
ubaddr>,<satype>]]] is sent to TE. In case
of MT call setup, result code is sent after
every +CLIP result code (refer command
"Calling line identification presentation
+CLIP"). When several different <code2>s
are received from the network, each of
them shall have its own +CSSU result code.