Spec Sheet Preview: The AA903C is designed for normal use as a flush-mounted unit with back-box model BBF863. However, the station will also fit into a model BBS863 back-box for surface mounting, or a model BBD905 for desk mounting. The unit features a brushed aluminum front plate with speaker and microphone for normal hands-free speech with a range of approximately 3-5 meters or 10-15 feet. Its keyboard consists of 10 numeric dialing buttons (DTMF), Push-to-Talk button (T), Cancel button (X), Volume Up/Down buttons, Privacy button (P) and a microphone Mute b …