I am looking for a device, a variant of Serial Tcp device server which can open a tcp connection to a server on a specified port and transfer data back and forth between serial port and our server whenever a request starts on the serial port. The device should close the tcp connection after 30 seconds of inactivity.
The device should configure its network interface using a dhcp server on the network. The serial port baud rates should also be configurable like other Serial Tcp device servers.
Note: The serial port is connected to a Pos terminal using 3 wires - Tx Rx and Gnd. The device will have to poll on the serial port for data. It cannot rely on DCD, DTR or DSR for presence of data.
POS terminal Serial Tcp device (Tcp client mode) Internet Transaction Server
I need a quite a few of these devices, 300 to start with. Do you guys know of any such device?