FeaturesAllows connection to the ANSI standard 2-wire U-interface2-wire interface from the TN2198 connects to an NT1 network interface4-wire interface on other side of the NT1 may connect to 1 or 2 telephones12-ports interface at the ISDN U reference pointRequires packet control circuit pack (TN778) on R6si and packet bus equipped on R6vsIncludes Refurbished
