Networking Apple IIc or IIc+

Many people have told me you can't network the IIc or IIc+, but I am sure I remember somebody telling me the IIc+ could be kludged to sort of work. Skipping that issue (unless somebody knows more), I wonder if a slower/dumber protocol than LocalTalk/AppleTalk might work? The idea would be to plug a PhoneNet adapter into a IIc/IIc+ serial port, and write a simple data transfer program of some sort regardless of how slow it might be. For example what would happen if you plug in the PhoneNets and just ran a normal terminal program of some sort to a host computer (mac etc.)? Now add a second IIc/IIc+ to the "network" and run a normal terminal program on it. Seems to me all you need to add is some kind of protocol for a packet with an address field and it should work. Ideas, opinions?