Dual-protocol dual port telephone and method to connect another dual-protocol dual port telephone via IP network directly and without installation

摘要

A VoIP telephone call is seamlessly routed via an IP network between a dual mode, dual protocol source telephone and a dual mode, dual protocol target telephone both having two communication ports having respective first and second addresses for connecting to a non-IP network and an IP network, respectively. Upon dialing the first address of the target telephone, the first address of the source telephone is retrieved without requiring manual intervention and then used to retrieve the second address of the target telephone without requiring manual intervention. The call is then seamlessly directed over the IP network between the source telephone and the target telephone using their respective second addresses. The second address of the source telephone is retrieved by the target telephone in symmetrical manner.