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.
FONECA is a service integrator and a distributor of telecommunication services. We focus on serving end users by offering a comprehensive solution for high-quality up-to-date telecom services at favorable rates. In order to keep up with the current teleco
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