Some telephones, depending on the brand and model, have the intercom function, which allows to begin communication by sending the signal. When the signal comes, the telephone set rings a signal different from the standard ring tone call. After that the telephone temporarily switches off from the telephone line and works as an intercom.
Aurora Com Limited
Aurora Communications, Ltd. - is an international telecommunication operator. The Holding is founded in 1999 and now includes the following companies: Aurora Communications UK, Aurora Communications USA, Infotel Data Communications and TASS-INFO (joint ve
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