ClipArt ETC
An instrument that converts voice and other sound signals into a form that can be transmitted to remote locations and that receives and reconverts waves into sound signals.

Early Model Telephone

An instrument that converts voice and other sound signals into a form that can be transmitted to remote…

An instrument that converts voice and other sound signals into a form that can be transmitted to remote locations and that receives and reconverts waves into sound signals.

Early Use Telephone

An instrument that converts voice and other sound signals into a form that can be transmitted to remote…