Specifications

Chapter 10 – Internet Service Commands
Multi-Tech Systems, Inc. AT Commands for EDGE (E1) Modems (S000474A) 177
10.14.4 Socket Client Sends Data via TCP Connection (Polling Mode)
The example uses service profile 0 configured for Socket service and TCP.
AT^SISO=0 The host opens service profile 0.
OK Note: URC ^SISW:0, 1 does not appear! The host must poll the
service state by means of AT^SISI until the service is in
<srvState> "Up".
AT^SISI=0
^SISI: 0,3,0,0,0,0 The service is still in <srvState> "Connecting".
OK
AT^SISI=0
^SISI: 0,4,0,0,0,0 The service is now in <srvState> "Up" and is ready to accept data.
OK
AT^SISW=0,10 The host requests to write 10 bytes.
^SISW: 0,10,10 Response that 10 bytes can be sent and are unacknowledged.
0123456789
OK
AT^SISW=0,10,1 The host requests to write next 10 bytes and enables the end-of-
data flag.
^SISW: 0,0,10 But the service refuses the request, even the end-of data flag
remains without effect.
OK
AT^SISW=0,10,1 Next try (polling).
^SISW: 0,10,20 Response that the service accepts 10 bytes and this data and the
previously sent data are unacknowledged.
0123456789
OK
AT^SISW=0,0,0 Polling to request unacknowledged data.
^SISW: 0,0,10 There are 10 bytes still unacknowledged.
OK
AT^SISI=0 Polling for <srvState> change ("Closing" - Down>
^SISI: 0,5,0,20,10,10 20 bytes are transferred via serial interface, 10 bytes are
acknowledged by remote peer, 10 bytes are on the way.
OK
AT^SISI=0 Polling for <srvState> change ("Closing" -> "Down").
^SISI: 0,6,0,20,20,0 The Service is in state "Down" and all data is confirmed by the
remote peer.
OK
AT^SISC=0 Closing the Socket service.
OK
10.14.5 Socket Client Sends Data via TCP Connection with URCs
The example uses service profile 0 configured for Socket service and TCP.
AT^SISO=0 The host opens service profile 0.
OK
^SISW: 0,1 Socket service is ready for upload.
AT^SISW=0,10 The host requests to write 10 bytes.
^SISW: 0,10,10 Response that 10 bytes can be sent and are unacknowledged.
0123456789
OK
^SISW: 0,1 The URC indicates that the Socket service is ready to transfer more
data. Data of the last AT^SISW command are transferred to the remote
host.
AT^SISW=0,10,1 The host requests to write next 10 bytes and enables the end-of-
data flag to notify that these are the last 10 bytes of the session.
^SISW: 0,10,20 Response that the service accepts 10 bytes and this data and the
previously sent data are unacknowledged.
0123456789
OK
------ Waiting for URC.
^SISW: 0,2 Data transfer has been finished.
AT^SISC=0 Closing the Socket service.
OK