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.
Media gateway Mediant 3000 is a compact solution oriented on communication operators. It supports from 480 up to 4032 voice channels on OC-3/STM interfaces. This media gateway is suited for applications of medium density, compatible with IP and ATM networks or unified IP/ATM networks.