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.
Cyberfone providing high quality India route directly interconnected with termination. So we can assure high ACD and ASR.We offering best rate with top quality.