Siemens AC75 - Manual (Page 287)

AC75 AT Command Set
10.9 AT^SICO
s
AC75_ATC_V01.002 Page 287 of 569 10/30/06
Confidential / Released
10.9 AT^SICO Internet Connection Open
The
AT^SICO
write command opens a connection profile (also referred to as bearer). Unlike the
AT^SISO
com-
mand which starts a connection profile and the service profile bound to it,
AT^SICO
activates only the selected
connection profile. Another difference over
AT^SISO
is that
AT^SICO
disables the inactivity timeout of the
selected connection profile and, therefore, sets the "inactTO" value to -1 (see also
AT^SICS
). To release the
connection use the close command
AT^SICC
. Closing the bearer restores the previously set "inactTO" value of
the concerned connection profile.
The
AT^SICO
command may be used, for example, to keep a bearer open while no service is active (i.e. while
no service has been opened with
AT^SISO
). Also, the
AT^SICO
command is necessary for running the Ping
command
AT^SISX
when no service has been opened with
AT^SISO
.
A connection opened with
AT^SICO
remains open until closed with
AT^SICC
or, in case of inactivity, discon-
nected by the network after 25 hours usually. The network initiated disconnection can be avoided by sending
AT^SISX
at regular intervals (Ping). The Round Trip Time (RTT) of the
AT^SISX
command strongly depends
on the data traffic of the IP services or DUN connections used at the same time.
Please note that after sending the
AT^SICO
write command the AT channel is blocked until the connection is
established. The command may be aborted when receiving any character during execution, e.g. "AT" or "at".
The
AT^SICO
read command requests the current settings of all Internet connection profiles set with
AT^SISC
.
The output is identical with the read command response of
AT^SISC
. One line is issued for every possible
parameter of a given
<conParmTag>
value.
Syntax
Parameter Description
0...5 Internet connection profile identifier defined with parameter
<conProfileId>
of
AT^SICS
.
Test Command
AT^SICO=?
Response(s)
[^SICO:(list of defined
<conProfileId>
s)]
OK
Read Command
AT^SICO?
Response(s)
[^SICO:
<conProfileId>
,
<conParmTag>
,
<conParmValue>
]
[^SICO: ...]
OK
Write Command
AT^SICO= <conProfileId>
Response(s)
OK
ERROR
+CME ERROR: <err>
PIN ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge
4
Last
+ + + + + + + - - -
<conProfileId>
(num)