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.
With the improvement of the quality of IP networks changes the work style, which now includes a more efficient use of communication tools such as video conferencing. In order to meet the needs of people taking a new style of work, Sony expands its line of IPELA video communications with personal videoconferencing system Sony PCS-TL33P.