a few years ago I developed an embedded solution where my RCM3700 communicates on internet via the GPRS connection of a Cinterion MC55i terminal. The PPP connection is established through the TCP/IP Dynamic C libraries (9.62), RS232 interface, baud rate 115200, RTS CTS hard flow control. Everythink it works well.
Now I need to replace the modem with the newer BGS2T RS232 model but I've got some incompatibility issues. It seems to be something related to PPP handshaking that it fails.
At first I though it was some incompatibility with the new modem so I requested supporto to Gemalto support but with no success.
Then I tried to connect the modem to my Mac with a FTDI RS232 USB adapter and I discovered that it works. So I suspect some problems in the Dynamic C libraries.
Are there any updates for them? In the past I've already installed all patches availables.
I hope someone could suggest me how to resolve this issue. Any feedback is appreciated.