Telephone Interface Board (FXS) (700-15-04) (LAST TIME BUY) Date and Time Event date: Location Optional Telephone Interface for Mercury Interface Units (MIUs) Event Types Products, Trilogy Mercury System, Interface Boards Up to 4 Telephone Interface Boards per MIU Provides a standard interface for up to 4 analog telephones Allows subscribers to navigate the Mercury system using a DTMF keypad Can be used to access a landline at any location on the Mercury system Ring-down feature enables an immediate, dedicated connection with any Mercury subscribers RJ11 connectors for easy cabling Port-specific input and output level adjustments Software configurable Customizable dial plans