It is a device capturing and controling all the signals, which are being created by the whole system, especially the made and received phone call signals. The device is mostly used for connecting regular phone system with the Internet and backwards.
Introduction
The use of PBX systems in business is hardly a new revelation. Businesses have been using various stages of the technology for years now, and it is far from a well kept secret that there are major advantages to using a PBX system. However, a lot of businesses that do not use something like Panasonic PBX are clueless as to what they are missing out on. While these businesses manually direct calls, those using NEC PBX use that manpower to increase productivity.