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.
Welcome to AVAD Networks-African Voice And Data. AVAD is the premier carrier for retail and wholesale international long distance traffic in and out of Africa and the rest of the world. Unlike our competitors, AVAD partners with national carriers based in
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