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.
iVoice networks pvt ltd is a leading provider of information technology services to business and government worldwide. Founded in 2005, iVoice Networks has the experience, business operations, Business Strategy, Internet Applications, Mobile applications
Read more