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.
We at Jaguar Communications Inc. are dedicated to servicing our customers by eliminating the many levels of service providers that must be contacted to accomplish the most ordinary changes to your telecommunications infrastructure.