光缆传输系统是一种全数字化的传输系统，近十年来，不仅在公用网，而且在专用网中也得到了广泛的应用，该系统的应用为提高专用网的网络技术水平及服务质量提供了坚实的基础。与此同时，矿区综合信息传输网络技术也迅速发展，新的技术很快地被应用到矿区通信系统。 本文主要研究了兖矿集团的信息网络改造技术，根据现代信息网络传输技术与矿区需求，提出了以MSTP为核心的传输网络改造技术方案。继承了SDH互通性好、可靠度高等特点，改造了原有的网络结构；同时拓展的业务接入具备了宽带业务接入和交换接入的基本智能，很好地支持以太网业务；能够良好地支持数据业务。构筑一个与业务类型无关的统一业务传输、复用、交换和交叉连接平台，能够灵活接入多种业务，在设计、构筑、运营、维护上取得巨大的经济效益。 经过技术改造后，兖矿集团的MSTP技术组建的数据网络，满足了当前业务需求，并为今后信息业务的发展预留了空间。MSTP不仅可以作为以太网的业务适配层，还可以作为以太网业务的控制层，其面向连接控制特征能够提供基于全网的流量工程，从整体上提高了MSTP系统的流量均衡能力。MSTP技术不仅能有效的支持环形拓扑结构及其快速恢复，同时具备数据传输的高效、简单和低成本等典型以太网特性。

Optical transmission system is an all-digital transmission system. The past decade, it has also been widely used not only in the public network but also in the private network, which provides a solid foundation for improving the level of private network and service quality network technology. At the same time, mining area’s comprehensive information transmission network technology has been developing rapidly, so new technology could soon be applied to the mine communication system. The main point of this paper is the Optimized Technology of Information Network for Yanzhou Mining Group. According to the network transmission technology of modern information and demands of the mining, we propose a new way for network transmission with MSTP as the core technology. The improved technology inherits the interoperability and reliability of SDH, and develops original structure of the network. At the same time, it provides the accesses to the broadband and exchange service, which supports for Ethernet services and data services very well. We build a unified service platform for the transmission, multiplexing, switching and cross-connectivity, regardless the type of the business, which can be easily connected to various business affairs. What’s more, it provides high economic efficiency in design, construction, operation, maintenance. The established data network of Yanzhou Mining Group, with MSTP as its main technological support, not only meets current business needs, but also reserves fields for the development of network information business in the future. MSTP can be used as the adaptation layer and the control layer of the Ethernet service. Its connection-oriented control features, which can provides full-network-based traffic engineering, improves the flow balancing of MSTP system as a whole. MSTP technology not only can effectively support the ring topology and fast recovery; it has efficient, simple and low-cost data transmission, these features are typical characteristics of Ethernet.