Unique ringing on a prime telephone line

Details Unique ringing on a prime telephone line Unique ringing on a prime telephone line

H - Electricity

04

M

H04M 3/02 (2006.01) H04M 3/04 (2006.01) H04M 3/51 (2006.01) H04M 3/54 (2006.01) H04M 3/60 (2006.01) H04M 19/02 (2006.01) H04Q 1/444 (2006.01) H04Q 3/47 (2006.01)

Patent

CA 2091278

A telephone switching system is comprised of a main controller, switching circuits controlled by the main controller, a peripheral controller for controlling the seizing of subscriber lines for calls routed through the switching circuits, and further comprising a first memory associated with and accessible by the main controller for storing user data associated with each directory number, the user data comprising a ring type, a second memory associated with the peripheral controller for storing ringing cadence indicators associated with respective plural ring types, the main controller for reading the station data from the first memory upon receiving a request for service to a directory number, and sending the ring type indicator with a subscriber line seize message to the peripheral controller, the peripheral controller for reading the second memory and obtaining the ring cadence indicators associated with the ring type, and ringing a line according to the indicated ring cadence.

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