Patent ID: 6169797
Filing Date: 2001-01-02
Classification: H04Q,Y10S

Abstract:
A method for setting up bidirectional telecommunication connections in a telecommunication private branch exchange having a controller, the method comprising the steps of: executing a program allocated to a controller at a private branch exchange to establish a signal path, via public network, between said private branch exchange and an external extension, said signal path allowing transmission between said private branch exchange that is transparent to said public network; in said program allocated to said controller, setting up a call proceeding on said signal path between said private branch exchange and an originating user terminal equipment at said external extension, including transmitting a message indicating said call is to proceed on said signal path, and said program also checking signaling information, having at least destination telephone number information indicating a destination telephone number of destination user terminal equipment, to determine if a main station telephone number information for a main station telephone number is available within said private branch exchange for said destination telephone number information, and via said controller, initiating dialing of said main station telephone number if said main station telephone number information is available, and activating a system-specific protocol wherein user-specific performance features are made available.