JK Audio TAP-1 Telephone Audio and Power Interface

The JK Audio TAP-1 is a phone line simulator for simple audio applications, that powers an analog telephone with the required -48 volts DC and separates audio into transmit and receive audio paths. The TAP-1 acts like an RJ-11 wall jack in your home. You may not know it but the telephone company sends power down into your wall jack and you use it to power your phone. This power is sent over the two wires call Tip and Ring. These two wires form a balanced, two way voice path which can be sent miles with minimal noise and signal loss. This two wire interface can be a burden if you just want to get audio in and out of a telephone without connection to the telephone company. The TAP-1 provides the Tip / Ring interface and -48 volt supply and then separates audio into transmit and receive. This is called a 2-wire to 4-wire hybrid. The bottom line... TAP-1 can be used on TV or film studio sets where a telephone or cordless telephone is used on set and you want to get audio into and out of the telephone. You can also use TAP-1 to test telephones, voice coding algorithms or phone line equipment. TAP-1 is built to very high specs for laboratory testing use.