METHOD, DEVICE AND SYSTEM FOR REALIZING VOIP SERVICE TRANSVERSAL

摘要

Disclosed are a method, device and system for realizing VOIP service transversal, which aim at realizing automatic VOIP transversal when a dynamic change occurs to a network segment of an accessed public network. The method comprises: a private network gateway where a VOIP client is located establishing a virtual channel with a VOIP convergent point in an end-to-end mode; receiving VOIP information sent by the VOIP client; sending the VOIP information to the VOIP convergent point through the virtual channel; and receiving VOIP feedback information returned by the VOIP convergent point, and forwarding same to the VOIP client. According to the present invention, a virtual channel established in an end-to-end mode is independent of an IP address segment passed by the virtual channel. When a dynamic change occurs to a network segment of a public network accessed by a private network where a VOIP client is located, automatic transversal of VOIP information from the private network to the public network is realized, thereby realizing the public network access and use of a VOIP on a large mobile vehicle.