Internet telephone system ensuring communication quality and path setting method

摘要

A method of setting a path in a network using an Internet protocol to facilitate voice communications between two devices includes determining whether a first path having an adequate bandwidth for transferring a voice over Intent protocol (VoIP) packet between two label switch routers exists. The method also includes setting a new path having a bandwidth that is at least two times the necessary bandwidth for transferring a VoIP packet, when it is determined that the first path does not exist.