Himachal Futuristic Communications Ltd. Offers Add Drop Synchronous Multiplexer with 155Mbps Optical. The cable division, wireless division and the wire line division of Himachal Futuristic Communications Ltd. Is an ISO 9001 and 9002 registered company. Add Drop Synchronous Multiplexer with 155Mbps Optical can be designed for junction and long distance networks and supports complex topologies such as rings, chains and stars. Add Drop Synchronous Multiplexer with 155Mbps Optical has a total cross connect capacity of 16 stm-1 equivalents PDH [2, 34, 140 mbps] and SDH [stm-1 and stm-4] tributary interfaces. Various network and equipment protections are available in this multiplexer.