SIP Softswitch
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.
Desk phones, mainly it is a wire telephone placed on the table. There
are very many variations of such telephones differentiating with the quality of
sound and connection as well as with the pack of functions and price.
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