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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.
ExcellentComputerServices
In this innovation era, the need of software within the telecom industry has been burgeoning, especially among the telecom service providers.The immense pressure to wipe out operational inefficiencies, improve performance and customer satisfaction is surg
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