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.
SmartNode 10200 media gateway allows adding VoIP capabilities to networks; it ensures the delivery of VoIP service by connecting voice traffic between the PSTN networks based on TDM (Timedivision Multiplexing) and IP networks such as the Internet.