The development of a handset for telephone stations

A NUMBER of factors contribute to the difficulties involved in the design of a telephone handset which gives as good service performance as a deskstand. The handset transmitter for example not only is used in a wider range of positions but also is moved much more frequently, so that wider variations are experienced in its characteristics. The more severe use to which the handset is subjected requires special design measures to prevent an appreciable shortening of useful life.