The design and simulation of the enterprise´s VoIP network

This design mainly aims at the small and medium-sized enterprise. On its existing internal integration local area network, it realizes the special-purpose IP telephone network in the enterprise, and it also realizes the main purpose that is the "zero" long-distance phone bill trans-regional enterprise. Because of VoIP is the technology of analog voice signal digitized and making the real-time transmission by the data wrapped gift\´s pattern in the IP data net, it will establish a VoIP network, and then using the cheap IP network which carried on the data transmits to achieve the above main purpose. In the entire design\´s process, in allusion to a logistics company\´s special details, it has designed the corresponding VoIP network, and it realizes a simple connection by using the OPNET network simulation software. To the small and medium-sized enterprise, this network has certain practical application significance.