Alcatel-Lucent subsidiary LGS announced that the Department of Defense Joint Interoperability Test Command certified its Alcatel-Lucent 1665 DMX Data Multiplexer and 1665 DMXtend Multiplexer as interoperable with the Defense Switched Network. The 1665 DMX and 1665 DMXtend both are designed for voice, data and video transport, according to the company.