- Viking advanced door/gate entry phone controller - Allows 1-4 entry phones to share a single telephone line with a residential or business telephone system - Use with any analog touch tone phone- Provide entry phone activated chimes and whole house paging when used with an SLP-1 or SLP-4 - Up to 6 different keyless entry codes / one time use keyless entry codes per entrance - Up to 6 master keyless entry codes for use at any entrance - Analog station mode allows the C-2000B to connect to an unused PABX st