Patent ID: 6320857
Filing Date: 2001-11-20
Classification: H04L,H04M,H04Q

Abstract:
A method of providing a telephone service to a subscriber which has an ongoing Internet Protocol (IP) network session over a first IP link established in a public or private communication network, said first IP link extending between a data communication device at a current location of the subscriber and an Internet access server at a site of an Internet gateway node, said data communication device being connected to a data terminal equipment at said current location of the subscriber, said data terminal equipment having a telephony application allowing for voice transmission over a second IP link, the method comprising the steps of:providing a telephony server able to communicate with a telephony network and via the Internet access server with the telephony application, wherein the telephony server is able to exchange IP packets with the telephony application in the data terminal equipment over the second IP link via the Internet access server and the telephony server is provided by a first entity that is independent of a second entity that provides the Internet access server to which the subscriber connects;redirecting a call to the telephony server, using a telephone number of the subscriber as an identification of a destination for the call; andconnecting the redirected call with the subscriber at said data terminal equipment via the Internet access server using said second IP link.