Specifications

SIM900 AT Commands Set
SIM900_ATC_V1.01 97 23.06.2010
Response
OK
+CME ERROR: <err>
Write Command
AT+CSSN=<n>[,
<m>]
Parameters
<n> a numeric parameter which indicates whether to show the
+CSSI:<code1>[,<index>] result code presentation status after a
mobile originated call setup
0 disable
1 enable
<m> a numeric parameter which indicates whether to show the
+CSSU:<code2> result code presentation status during a mobile
terminated call setup or during a call, or when a forward check
supplementary service notification is received.
0 disable
1 enable
<code1> 0 unconditional call forwarding is active
1 some of the conditional call forwarding are active
2 call has been forwarded
3 call is waiting
4 this is a CUG call (also <index> present)
5 outgoing calls are barred
6 incoming calls are barred
7 CLIR suppression rejected
<index> closed user group index
<code2> 0 this is a forwarded call
1 this is a CUG call (also <index> present) (MT call
setup)
2 call has been put on hold (during a voice call)
3 call has been retrieved (during a voice call)
4 multiparty call entered (during a voice call)
5 call on hold has been released (this is not a SS
notification) (during a voice call)
6 forward check SS message received (can be received
whenever)
7 call is being connected (alerting) with the remote party
in alerting state in explicit call transfer operation (during
a voice call)
8 call has been connected with the other remote party in
explicit call transfer operation (also number and
subaddress parameters may be present) (during a voice
call or MT call setup)
9 this is a deflected call (MT call setup)