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.
Telintel (www.telintel.net) was founded in 1997, to meet the growing telecommunications market between United States and Latin-American, offering private channels, FAX-services and Internet.Telintel is based in Miami (US) where is licensed to deliver loca
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