Gemalto is now part of the Thales Group, find out more.

You are here

Setup simple TCP connection with server. Unable to send data. | Thales IoT Developer Community

November 20, 2014 - 1:09pm, 5575 views

Hello there,

Im currently working with the BGS2-W. Im trying to setup a TCP connection with my server but when Im at the point to send data, its not going through. I use the following AT commands:

AT+CREG? To see if Im registered with the network

AT^SCFG="Tcp/WithURCs",on Enable URC ****

AT^SICS=0,conType,GPRS0 Select connection type GPRS0

AT^SICS=0,APN,"apn_url_here" APN to access the GPRS services

AT^SISS=0,SRVTYPE,TRANSPARENT Select service type "Transparent".

AT^SISS=0,ADDRESS,"ip:port" Specify server address

AT^SISO=0 The host opens service profile 0.

wait for response ^SISW: 0,1 Socket service is ready for upload.

AT^SICI? Check the state of the Internet connection profile

wait for response ^SICI: 0,2.. Up

AT^SISI? Check service state of service profile 0

wait for response ^SISI: 0,4.. Up

Untill here, everything seems fine. When I try to send data with AT^SIWS, I always receive ^SISW: 0, 0, 0. I have tried several versions of AT^SIWS but none of them seem to give the right answer.

For example

AT^SISW=0,10 gives ^SISW: 0, 0, 0

I have also tried using the interactive write **** but I dont understand which parameters to use.

I hope anyone can help me understand what Im doing wrong.