The Ad913 permits communications between your Production Intercom cabled intercom system and any number of standard, simplex transceivers is dedicated as 'base' and connected via its accessory mic/spkr jacks to the Ad913. The AD913 is connected to the intercom system as if it were another belt pack. Transmissions from other transceivers on the same frequency as the 'base' will then be heard on the cabled stations. Cabled stations may transmit to the remote transceivers by simply pressing and holding their signal buttons. Production Intercom can provide reasonably priced cables for connecting most transceivers to the AD913.