The patented Gemini architecture gives you two complete data analyzers in one compact package, so it is ideal for end-to-end testing of modems, multiplexers, DSU/CSUs, ISDN terminal adapters, T1/E1 transceivers, and a host of other data communications devices. Gemini is an ideal tool for R&D, engineering, quality assurance, manufacturing, and product evaluation applications. Gemini drastically reduces the cost, time, and equipment complexity required to achieve an effective, thorough test setup. Gemini provides built-in call setup capabilities, so it eliminates the need for separate terminals or PCs