A telephone handset universal connector is used to connect between a phone
base having a set of four signal outlets, and a handset having a set of
four corresponding signal ports. The telephone handset universal
connector includes a universal circuitry and a selection switch. The
universal circuitry has an electric output 101 for electrically
connecting with the four signal outlets of the phone base and an electric
output 102 for electrically connecting with the four signal ports of the
handset, wherein the selection circuitry provides twelve connection
combinations for selectively connecting between the four signal outlets
and the four signal ports. The selection switch is electrically connected
with the selection circuitry to selectively switch the selection
circuitry within the twelve connection combinations.