Why can't you provide a default working configuration like a normal modem ?
Normal telephone modems are designed to use a single standard connection which varies minimally across the globe.
Nexion Data Systems radio modems are designed to interface with the widest possible range of transceivers - each of which vary in their interface requirements from model to model. Even different transceiver units of the same model can sometimes require vastly different settings for optimal performance. The flexibility of the Nexion modems configurations caters to these variations in radio transceivers allowing optimal (data) use of virtually any radio unit.
Basic modem settings to suit a range of transceiver units: