Shades of pre-1968 AT&T. "Oh no, you can't connect that modem to our lines." In fact, prior to late 1956, AT&T even told people they couldn't mechanically attac

Shades of pre-1968 AT&T. "Oh no, you can't connect that modem to our lines." In fact, prior to late 1956, AT&T even told people they couldn't mechanically attach a device to their phones.