Cannot execute command AT#OTCP

Legacy Open AT
1

Hello!
I send to my gprs modem the command
AT#OTCP
and I receive the responce
“ERROR”.
I also send to the modem the commands
AT#TCPSERV=“255.255.255.255” and
AT#TCPPORT=“17000”
and I receive the error “#CME ERROR: 34882”.
The version of the modem firmware is
655_09gg.Q2406B 2015268 111705 17:01 .

These commands were working fine until some sort of crash occured and I installed a newest version of firmware.

Thanks for your time.

2

The AT# commands are part from external application (not firmware).
You should contact your distributor to get the software and install it with at+wdwl command, and then at+wopen=1 to run it.

3

Hello again.
I have already loaded the files for the IP connectivity extension using the at+wopen=1 etc.
I have also solved the problems for the commands AT#TCPPORT and AT#TCPSERV (the newest version requires one more parameter).
However. the problem with the AT#OTCP command persists.
Do you know which is the file which contains the extension for the TCP-IP or which command I have to send instead of AT#OTCP in order to establish a TCP connection?
Thanks for your time.

4

Hello,

It works with “At#otcp=1 or 2” instead of “At#otcp”.

Everything is ok.

Thanks for your help.