Door Entry and Camera Control for 1 or 2 Doorboxes, Provides C.O. Sharing and two Relay Closures. The C-1000B allows single line phones or phone systems to share a phone line with one or two Viking doorboxes or paging amplifiers. The C-1000B provides two Touch Tone controlled relays to operate door strikes or gate openers and provides doorbox triggered CCTV camera switching. Viking doorboxes and paging amplifiers can be used on single line, residential or home office applications as well as on fully loaded systems, because they are no longer limited to installation on unused trunk ports. Applications Add one or two Viking Doorboxes to your home or office phones Switch between two CCTV cameras automatically when either doorbox is activated Add Viking paging amplifiers to provide loud ringing and paging to businesses with single line phones or fully loaded phone systems. Provide commercial or residential security via two-way handsfree communication from a door or gate Use as a line concentrator (one fax machine or answering machine can answer three lines) Features Allows two Viking doorboxes or Viking paging amplifiers to share a single telephone line with a residential or business telephone system Doorbox triggered CCTV camera switching Custom ringing mode allows you to distinguish doorbox calls from C.O. calls Compatible with up to two of the following Viking doorbox models: W-1000, W-2000A, or W-3000. Alternatively, the Analog PABX/KSU station mode allows compatibility with a single Viking handsfree phone (E-10A, E-20B, E-30, K-1700-3 or 1600A Series) Compatible with Viking s Single Line Paging Controller, Model SLP-1. Call waiting tones indicate which doorbox is calling and distinguish a doorbox call from a C.O. line call Calls can be placed on hold when visitors call from the doorbox or when paging Provides two Touch Tone controlled N.O. or N.C. dry contact closures (5 amp rating) for door strikes or gate openers Keyless entry/postal lock input Built-in talk battery for No C.O. Line applications Auxiliary contact output for doorbells, lights, etc.