Patent ID: 6097804
Filing Date: 2000-08-01
Classification: H04M,H04Q,Y10S

Abstract:
A method of completing a voice connection between a first and second voice terminal in a Switched Telephone Network (STN), comprising the steps of:receiving a call request at a Virtual Switching Point (VSP) in the STN having a connection to a data network;initiating a first Common Channel Signaling (CCS) ISDN User Part (ISUP) message session from the VSP over a signaling network of the STN to a switching point in the STN to establish a first leg of the voice connection; andinitiating a second ISUP message session from the VSP to a switching point in the STN to establish a second leg of the voice connection;the first and second ISUP message sessions being interrelated to an extent that messages originating from the VSP include a circuit identification code associated with opposite ends of an ISUP voice trunk in the STN.