CN2: Akey step toward All-IP

A forecasted by Wei Leping the chief engineer for Chine Telecom,the future telecom inddutry might withness voice services as internet applications while mobile and broadband services will become two ipmportant trends for the future.The development direction will focus on a range of full service and all IP

Using this all IP strategy as a guide, CHina telecom had already completed its five phase expansion and reconstructions on ChinaNet which is its internet service bearer network by 2003.However the capacity,perfomance and QoS if ChinaNet were still not able to meet the needs for few services,especially from key account and commercial customers as well as from softswitch and video services

The teelcom industry once attempted to use an IP network designed in the internet mode ot bear telecom service, but the attempt failed to be practicable.A senor telecom expert once said,'the two end mode of telecom service does not comply with internet applications and carriers cannot interfere with internet service.As the result the telecom network adn the internet network will be two parreled servicee which will never meet'

In fact, most bearer networks in the internet era were telecom networks, which were not designed for the internet.Subsequently, many conflict nad problems have arisen because of this.During its developments, the IP network has destroyed the business mode of the telecom network,making it contradictive to the basic economic order.This has resulted in the badwidth growth being faster than traffic growth and traffic growth being faster than the cost growth and the cost growth is faster than income growth

In ht profite mode, business model of telecom comprises of three layers.The first layer is utilized to the sell basic network resource such as badnwidth traffic and VPN.THe second layer is used to lease the service platform.The third layer,which constitutes the highest layer in the value cahin of each telecom carrier, is used to provide basic and value added service.

As we all know, the internet is typical application of the separation of services from services bearer.In order to effectively achieve the above described business model in IP telecom networks,cosideration should be made toward both IP network system structure and the network service structure.New idea must be used in designing IP telecom networks, thus freeing us from the shackles of conventional ideas concerning the internet

With such consideration in mind,starting in 2003,China telecom gradually abonded the idea of reconstructing ChinaNet and instead decided to construct CN2(China Telecom's Next carriying Network),which is a new IP backbone bearer network.THe new network is expected to meet the demands for bearer networks from carrier class service like 3G or NGN.It is also expected to manage and control IP data, and help to lay a solid foundation for China telecom in developing into a first class carrier in the coming 10 to 20 years

In 2006,the CN2 was completed adn put into operation,at cost of 1.3 billion Yuan.As CHina's first independent IP backbone network,which is able to bear NGN,3G as well as other key account service,CN2 is laying a solid foundation for China Telecom's transmission ot providing telecom IP services.