[Rickertsen2]

Looking at the datasheet, the e-wave modems are not completely transparent. They require special commands to configure things such as what channel they operate on. Even if you get another modem and get the pinout right, chances are things won't work unless it uses the same command set as the e-wave modems.



The only solution i can think of is a bit bootleg. It requires a pair of the e-wave modems in series with some third party modems such as the ones you listed above. The second modem must be completely transparent (that is it requires no special commands sent to it to configure it).