1. Field of the Invention
The present invention generally relates to an improvement of a signal switching circuit for use in a telephone set or the like, and more particularly is directed to a cross point mixer adapted to be loaded with the telephone set having a multiplicity of functions.
2. Description of the Related Arts
Recently, telephone sets provided with a multiplicity of functions have been on the market. Such telephone sets include complicated internal wiring due to the necessity of ensuring a proper action of the functions. This inconvenience is serious in, for example, mixing of voice signals.