Microcom Inc, the Norwood, Massachusetts company that software based workstation connectivity products, has announced an Integrated Services Digital Network interface that is designed to be used to interconnect two separate remote local area networks. Called the MBL/1500, the primary rate interface connects over a dial-up connection through an ISDN network. We are the first connectivity company to have a product that fully integrates a LAN bridge with ISDN, claims Dick Sterry, Microcom’s vice president of product marketing. The MLB/1500 provides the connection flexibility required by large network users. Networks can be expanded to include multiple, geographically remote locations with the flexibility of ISDN and analogue interworking. The Microcom LAN Bridge is a Media Access Control level transparent bridge. It passes LAN packets, unaltered, from one LAN to another. Networks using Novell Netware, 3COM 3+, DECnet, or TCP/IP can be connected together without users knowing they are attached to a geographically remote network. The Microcom LAN Bridge is a self-contained unit comprising three functional parts: the Wide Area Network Module, which controls the ISDN line link between the bridges; the LAN Interface Module, which handles the packet traffic on the local network and passes packets to the Bridge Management Module; and the last-named, which actively manages the establishment of communications links. No prices were provided.