Rainbow Electronics GM862-QUAD-PY - Manual (Page 25)

Easy GPRS User Guide
80000ST10028 Rev. 4 - 16/07/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 25 of 63
AT#SO = 2
CONNECT
data sending
(+++)
In case there is data pending on this socket (you can know this the unsolicited message SRING has
appeared before), issuing command AT#SO these pending data will be displayed after the CONNECT
string.
It is possible to resume a suspended socket without waiting for SRING message or data pending on
that connection.
Using AT#SO on a Connection Id in idle state (no socket open or suspended) we obtain a NO
CARRIER message.
2.1.1.6 Close the Socket without deactivating the context
The connection can be closed for the following reasons:
• remote host TCP connection close
• socket inactivity timeout
• Terminal Equipment by issuing the escape sequence "+++" and AT#SH that specifies the
Connection Id
• Network deactivation
With the new management of the escape sequence we need a command to close the socket
connection. The AT command syntax to use is:
AT#SH = <conn Id>
Example:
AT#SD = 2 , 0 , 80 , “www.google.com”
CONNECT
data sending
(+++)
OK
AT#SH = 2
OK
Now the connection is closed. If we send this command with an idle Connection Id we obtain in any
case an OK message.