I use Fastract Supreme 20 modem with R71b firmware on it. It uses WIP Plug-in 4.0.
After establishing GPRS connection, sometimes my wip_TCPServerCreate function returns NULL. It is rare but annoying. The documantation says it means an error occurs when trying to create server socket. But how can i get the more information about the error? How can i get to know what causes this error?