The AS-66 is our Telephone Four Line Simulator with auto ring up. This unit simulates four, individual, standard telephone company lines and also DID lines. This unit allows Voice Cards to be used as information systems at malls, hotels, or even trade shows; and it allows you to demonstrate Voice systems on a multi-line level. Just connect simple single line telephones to the jacks labeled PHONES 1, 2, 3 and 4. The jacks labeled VOICE CARD 1&2, 3&4 connect directly to industry standard RJ-14, dual port Voice Cards; they can also be split into four RJ-11's for single port Voice Cards. The unit operates on standard 110VAC house power.