How to improve the network efficiency of core Softswitch technology of NGN

I believe many people think that the Softswitch technology will be the core of the future of NGN. Here we will mainly introduce how to use the Softswitch technology to improve the overall performance of our network, the communication network has changed from a technology-driven model to a market-and business-driven model. The customer-centric and market-oriented model has become an inevitable trend for the next development of fixed network. Reasonable optimization and transformation of existing Softswitch technology networks, making them more flexible, secure, and efficient on the basis of saving maintenance costs and operating costs. If you cannot keep up with the technical trend, the loss of customers cannot be avoided.

The following network technologies can greatly improve network performance and security while maintaining a low cost of operation and maintenance: Number repositioning technology: Number repositioning Technology (SNR) the intelligent number relocating technology is introduced at the signaling link layer, so that the No. 7 signaling network can be intelligent so that the existing Signaling does not need to be enhanced when the number and routing-related services are opened, to facilitate and quickly deploy new businesses.

Connect the SNRU (Intelligent number relocating unit) to the signaling link between the signaling point (SP. The device processes the relevant content of the signal unit of the specific signaling 7, without the functional dialogue between the MTP2 layer (the message transmission part is Layer 2) and MTP3, you do not need to process the functions of the business application layer above the MTP3 layer. The number analysis and change is a new service-independent function module added by the device on the Signaling Link Layer for smart networks, complete the number analysis, user contract information search, and number parameter changes. SNRU inserts the service access code of the contracted service into the called number to route the call to SSP and trigger the intelligent network.

Dynamic stepless routing: Dynamic stepless routing (DNHR) is an advanced and Intelligent Routing Mechanism. It can improve the security of network operation and make more efficient use of existing network resources, increase the network traffic dredging rate and reduce the network operation and maintenance costs.

Although the network structure of the current Softswitch technology has reached a certain scale, there are enough connections between nodes, but how to make the business and traffic flow in the network orderly and efficient, reasonable Utilization of circuit resources based on network conditions has become a major concern for network operators in optimizing networks, improving network efficiency and reliability. Introducing an advanced intelligent dynamic stepless Routing Mechanism in the telephone network of the basic service network is an effective solution.

The P3SB2 switch of Jiangxi Netcom adopts the ADR technology to achieve dynamic and stepless routing. ADR is a kind of event-based Dynamic stepless routing technique recommended by ITU-T E.170. Dynamic and stepless ADR will be implemented gradually by plane. The Network Plane of ADR is adopted, and the nodes must be connected by a mesh structure.

The dynamic stepless routing technology enables the route table to set the optimal route for the next call based on whether an automatic update is successfully established for each call connection, improve the network connection rate, reduce network congestion, increase network flexibility, and improve network elasticity and adaptability to improve network security and reliability, this capability is usually hard to achieve by increasing network redundancy.

ADR is a learning dynamic route selection method. In a network with a full mesh connection, the call between the initiator and the terminal automatically selects a direct route, if a call cannot be established for a direct route, the terminal board will return a failed reason value, such as the circuit is busy, and re-select a roundabout route with two links as the first choice after one switch, if this roundabout route can successfully establish a call, the route will be retained in the database as the preferred roundabout route for the next call. Otherwise, if the route selection fails, the system will automatically select the next new roundabout route until the call is established successfully. Meanwhile, the ADR will update the route for the established call to the preferred roundabout route; if the available routes cannot be selected among all possible routes, the call fails. In this case, the original preferred routes are retained without updating them.

Pure Bureau trigger scheme: the main point of the scheme is that the business trigger will be completed at the same time by the Bureau, and no independent SRS need to be set up. However, it is required to make some changes to the Bureau, this feature stores user attributes to store user business attribute data, including the user's number information and the smart Service Information signed by the user, and triggers the intelligent network.

In this scheme, all calls, including calls from this Council, must be transferred by the Communications Administration. When a call enters the receiving board, first check the attributes of the caller and the called user (if the called number has been received) to determine whether a number translation or business contract information is required, based on the check results, make appropriate treatment for the master called number, and then follow the normal process to complete the call connection. You can change the number between a logical number and a physical number to route the call to a new destination. In addition, for calls with smart business contracts, you can add the service access code before the called number to guide subsequent call handling and route the call to SSP, then, the corresponding SCP is triggered for business processing to solve the user triggering problem. The advantage of doing so is to minimize the changes made by the Communications Administration, and ensure that other network elements except the communications administration will not be affected, including the intelligent network and its services.

Through proper transformation of the basic network, the problem of Service triggering can be completely solved without the need to move the SSP down to the terminal board, this greatly improves the support capability of the landline network for new businesses and lays the foundation for a wide range of business types. In the past, some hard-to-achieve personalized services, such as fixed-line ring tones, double-vibrating bells, pre-payment calls, and personal numbers, were easily and flexibly opened to any user, users do not need to change their existing numbers, and do not need to call various access codes during use, greatly expanding the new business user base. In addition, centralized placement of user data, this laid the foundation for the smooth development of number businesses. NGN Softswitch technology: As a next-generation network with the core of Softswitch technology, NGN is an important milestone in the development and evolution of traditional telecom technology and a revolution in the network system.

Based on practical considerations, you can use Softswitch technology to use Softswitch products on the basis of protecting existing fixed network investments without affecting existing services, the interconnection between the traditional PSTN network (including the SMART network) and the Internet is completed to promote the smooth transition from the existing fixed telephone network to the NGN. In the evolution of China's fixed telephone network to the NGN network, we must first strengthen the tracking of the NGN technology, and adopt the overlapping network networking scheme to build and operate the NGN Commercial Trial Network, achieve interconnection with existing PSTN, IP, PLMN, and other networks, and continuously accumulate experience in operating NGN services. As the technology of the NGN network continues to mature, the planning and construction of the target network of the NGN network will be promoted, and the ingress network will be optimized and smoothly evolved in an all-round and thorough manner, the transformation of the domestic network Switching Module board and access network equipment into MG (Media Gateway), the gateway board/Bureau, and the long-distance bureau into TG (relay gateway ), in the No. 7 signaling network, STP (signaling transfer point) is evolved into SG (signaling gateway), and cross-region Softswitch technical servers are established to achieve national interconnection based on routing policies and build the target distribution system of the NGN network.