VoIP Traversal Through NAT

摘要

VoIP voice service was considered the important commerce chance in the electricity and communication market in the future years. However , the problem that the VoIP technology could not travel through the multiple of NAT devices blocks the popularization of the internet phones. Several solutions of the field for the VoIP traversal through NAT devices are given ,based on the analysis of NAT technology. The limitations of the different solutions illustrated are analyzed.