Sony Ericsson GM29, Integrator'S Manual, Page: 253 / 264

16. SUPPLEMENTARY SERVICES
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16.16 AT+CSSN Supplementary Service Notification
This command refers to supplementary service related network initiated
notifications. The set command enables or 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, unsolicited result code +CSSI:
<code1>[,<index>] is sent to TE before any other MO call setup result
codes presented in this ETS or in V.25ter. 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>] is sent to TE. In case of MT call
setup, result code is sent after every +CLIP result code (refer command
“Calling line identification presenCLIP”) and when several
different <code2>s are received from the network, each of them shall
have its own +CSSU result code.
Note!
The difference between <index> and <cindex> is that <index> is a
position mark while <cindex> is a unique value for each CUG. <index>
is not supported.
Test command returns values supported by the TA as a compound
value.
Description Command Possible Responses
Presentation of notification
result codes from TA to TE
AT+CSSN=[<n>[,<m>]] • +CME ERROR <err>
• OK
• ERROR
Read the current setting AT+CSSN? • +CSSN: <n>,<m>
• +CME ERROR <err>
• OK
• ERROR
Test if the command is
supported
AT+CSSN=? • +CSSN: (list of
supported <n>s),(list of
supported <m>s)
• +CME ERROR <err>
• OK
• ERROR
<n> Description
0 Disable the +CSSI result code presentation status in the TA
1 Enable the +CSSI result code presentation status in the TA