Specifications

MC55 AT Command Set
10.3 AT^SISO
s
MC55_ATC_V03.03 Page 237 of 459 9/9/05
Confidential / Released
Unsolicited Result Code
Indicates the current state of the Internet service.
^SIS: <srvProfileId>, <urcCause>[, [<urcInfoId>][, <urcInfoText>]]
The URC may appear if an error occurs, for example after opening an Internet service with AT^SISO or any time
during operation. The URC also indicates a request for a mobile terminated Internet service client connection, or
a failure if a mobile terminated request is rejected. Furthermore, the URC may deliver an information element
resulting from a specific command given in the service profile.
The precise <urcInfoText> related to a <urcInfoId> varies greatly depending on the used service, the sce-
nario and the implementation of the remote server. A list of possible causes can be found in Section 10.7, Infor-
mation Elements Related to Internet Service URCs.
Parameter Description
<srvProfileId> 0 ... 9 specified with AT^SISS.
Internet service state identifier.
"" Service profile is unused.
2 Service profile resources are allocated, i.e. at least the service type has been
set (parameter <srvParmTag>, value "srvType" of AT^SISS). The service is
not opened.
3 Connecting: State after opening a service with AT^SISO where the connection
is being established.
If connection setup is successful the service proceeds to the state "4" (Con-
nected) and one of the URCs "^SISW" and "^SISR" may follow. If connection
setup is not successful, the "^SIS" may appear.
In the case of SMTP, the service will not enter <srvState>=3 until the host
has written the first data packet with AT^SISW.
If the service profile is configured as Socket listener then the listener always
stays at <srvState>=3 (listening) and <socketState>=3 (LISTENER),
while the <srvState> and <socketState> of the dynamically assigned ser-
vice profile may change. See examples in Section 10.3.1.
4 Connected: Socket connection valid.
5 Closing: Socket connection releasing. The Closing state is reached after send-
ing the AT^SISC command or after a service has closed automatically, such
as FTP download or POP3. In the latter case, it is necessary to send the
AT^SISC command even though the FTP download or POP3 service has
already entered <srvState> "2".
Socket state identifier.
1 Socket not assigned, i.e. no TCP/UDP connection active.
2 Socket assigned as CLIENT.
3 Socket assigned as LISTENER.
4 Socket assigned as SERVER.
Number of bytes received via AT^SISR since last successful AT^SISO write command.
<srvProfileId>
(num)
<srvState>
(num)
<socketState>
(num)
<rxCount>
(num)