I have been thinking if those telemetry modules can be used as transreceivers, by plugging both sides  in pc and using serial port (baud rate-57600)?if anyone can enlighten me if this is possible.
Thanks in advance

It can technically send and receive data. That's what it's for. You only need to find a way to do it. It's 100% possible, but it won't be as fast as wifi from what I have learnt.

It almost works same as uart lan modules.