Having a Hayes(-like) command set/interface should be the goal of more hardware. Get rid of the in-band command switching (that Hayes has with the +++) by havi

Having a Hayes(-like) command set/interface should be the goal of more hardware. Get rid of the in-band command switching (that Hayes has with the +++) by having a separate interface/serial-line for commands. I know some 3G wireless USB controllers do this, show up as multiple serial devices with one designated as a control channel, but it would be great if it was more common and wasn't just for modems.