Introduction to Huawei PTN Packet Transmission Equipment

 PTN products designed for packet transmission, the main characteristics embodied in the following aspects: flexible network scheduling ability and more business transfer ability, comprehensive telecommunication level security, telecommunication level OAM ability, perception and end-to-end business opening management ability, transmitting unit cost is low. In order to achieve these goals, accords with the demand of the application may appear at the same time, the need to focus on the support of TDM business ability, clock synchronization, connectivity problems.

Graph: PTN solution sample

1, TDM business way of support
  In support of TDM business, at present generally adopts the PWE3 (PseudoWireEmulationEdge – to – Edge, end-to-end pseudo line simulation), the current TDMPWE3 support for unstructured and structured two modes, encapsulation format support MPLS format.
 
2, grouping clock synchronization 
  Clock synchronization requirements is the grouping business such as 3 g, the objective demand for networking, clock synchronization includes two kinds of time synchronization and frequency synchronization. In the mode of implementation, mainly has the following three types: synchronous Ethernet, TOP, IEEE1588V2 (TimingOverPacket) way.
 
3, connectivity problems
  PTN from transmission Angle group carrying solution is put forward. The evolution of technology revolution, the network only. Operators are now net is huge MSTP network, MSTP node has been extended to every corner of the local city. PTN network must be considered and net MSTP now. Each exchange two aspects including business communication, network management business.
Currently in commercial perspective, in view of the standard, industry maturity, key problems to solve problems such as progress, although each vendor in such aspects as standard, the product is a lot of effort, but on the whole, mature solutions and products of enterprises is not too much, the actual commercial is not much. Balefire communication as the domestic good communications products and solutions provider, deep in the field of optical communication and data communication technology accumulation for the transformation of technology and products to win the initiative. As one of the earliest domestic began to research and development of MSTP equipment manufacturers, research and development since 2000 to 2003 years in the process of the large-scale commercial, accumulated the rich data and experience, and constantly improve MSTP product in the process, through the large test operators. As leading enterprises of optical valley, for many years to undertake a wide range of the “863” project, such as complete in MPLS technology “which has the function of virtual private networks (VPNS) implementation technology transfer business platform”, and successfully passed the acceptance and the commercial, has accumulated rich experience of MPLS technology and application; Completed the “863” project “automatic switching optical network node equipment development and system test”, in the control plane has accumulated rich experience in research and development and commercial projects; Completed the “863” project “based on” broadband gigabit Ethernet passive optical network system, with a number of leading technology and mature and stable product pilot FTTx market, including the TDM over IP technology. The accumulation of these techniques and the application of mature products, for the optical transmission network based on group technology research and product development laid a solid foundation.