Patent ID: 6041108
Filing Date: 2000-03-21
Classification: H04M,H04Q

Abstract:
A method for filtering calls in a switch system, the switch system including at least two access subsystems and at least one interconnection subsystem comprising the steps of:storing a list of active filtering criteria in each of said at least two access subsystems;receiving an incoming call at at least one access subsystem of said at least two access subsystems;determining whether the incoming call matches any of the active criteria stored in the at least one access subsystem;applying a filtering method associated with a matched active filtering criteria if the incoming call matches any one of the active filtering criteria:determining whether a call should be blocked as a function of said filtering method; andcausing said access subsystem to block the incoming call if it is determined to block the incoming call as a function of the filtering method;storing a list of active filtering criteria in each of said at least two access subsystems;storing a filter method associated with each of the active filtering criteria in the interconnection subsystem;inputting a change to the interconnection subsystem to the list of active filtering criteria and broadcasting the change to each access subsystem; andstoring the change in the list of active filtering criteria in each of said at least two access subsystems.