Telit Wireless Solutions ME910G1 - Page 666

ME310G1/ME910G1/ML865G1 AT Commands Reference Guide
80617ST10991A Rev. 11 Page 666 of 1039 2021-09-23
Not Subject to NDA
255
:
local host closes only after an escape
sequence (+++)
If successful, command returns a final result code OK. If the
ListenAutoRsp flag has not been set through the command
#SCFGEXT (for the specific <connId>), then, when a TCP connection
request comes on the input port, 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 ListenAutoRsp flag has been set, then, when a TCP
connection request comes on the input port, if the sender is not
filtered by the internal firewall (see #FRWL), the connection is
automatically accepted: the CONNECT indication is given and the
modem goes into online data mode.
If the socket is closed by the network the following URC is
received:
#SKTL: ABORTED
AT#SL?
Read command returns all the actual listening TCP sockets.
AT#SL=?
Test command returns the range of supported values of the parameters.
Open a socket listening for TCP on port 3500.
AT#SL=1,1,3500
OK