Specifications

UC864-E/G AT Commands Reference Guide
80304ST10041a Rev. 3 - 18/07/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 202 of 259
#SA - Socket Accept
1..6
AT#SA=? Test command reports the range of values for <connId> parameter.
3.5.7.2.7 Socket Restore - #SO
#SO - Socket Restore
AT#SO=<connId> Execution command resumes socket connection which has been
suspended by the escape sequence.
Parameter:
<connId> - socket connection identifier
1..6
AT#SO=? Test command reports the range of values for <connId> parameter.
3.5.7.2.8 Socket Listen - #SL
#SL - Socket Listen
AT#SL=<connId>,
<listenState>,
<listenPort>
[,<lingerT>]
This command opens/closes a socket listening for an incoming connection
on a specified port.
Parameters:
<connId> - socket connection identifier
1..6
<listenState> -
0 - closes socket listening
1 - starts socket listening
<listenPort> - local listening port
0..65535
<lingerT> - linger time
0 - immediate closure after remote closure
255 - local host closes only after an escape sequence (+++)
Note: if successful, commands returns a final result code OK . Then, when
there’s an incoming connection on the local port and if the sender is not
filtered by internal firewall (see #FRWL), an URC is received:
+SRING : <connId>
Afterwards we can use #SA to accept the connection or #SH to refuse it.
If the socket is closed by the network the following URC is received:
#SKTL: ABORTED
AT#SL? Read command returns all the actual listening sockets.
AT#SL=? Test command returns the range of supported values for all the