Patent ID: 7020260
Filing Date: 2006-03-28
Classification: H04M

Abstract:
1. A method of alerting a plurality of groups of telephone stations comprising the steps of: alerting, in parallel, a first group of telephone stations accessed via a first switch each member of said first group having a different telephone number; if none of the first group of telephone stations answers, then establishing a connection to a second switch for accessing a second group of telephone stations each member of said second group having a different telephone number; and alerting, in parallel, the members of the second group accessed via the connection between the first and second switch; wherein a caller calls a pilot directory number, different from the number of any of said first group of telephone stations, for accessing members of the first group of telephone stations; and wherein the step of establishing a connection to said second switch comprises the step of said first switch calls a second pilot directory number for accessing the second group of telephone stations.