Having Transmission Of A Digital Message Signal Over A Telephone Line Patents (Class 379/93.01)
- Having tone code recognition for generating alphanumeric characters (Class 379/93.18)
- Having pressure or position sensitive surface (e.g., touch-screen, light pen) (Class 379/93.19)
- Having conferencing (Class 379/93.21)
- At pay station (Class 379/93.22)
- Having user information display (e.g., telephone number, name, address, etc.) (Class 379/93.23)
- Having electronic mail (Class 379/93.24)
- Having remote database (e.g., videotex system) (Class 379/93.25)