根据合同，洛·马公司将开发一个技术验证载荷，通过专用通信手段提供战术空间态势感知能力。
Under the contract, Lockheed Martin will develop a technology demonstration payload to provide tactical space situational awareness with dedicated communications.
提出用智能网技术实现铁路专用通信业务的设想，重点分析了可行性。
The idea to use the intelligent network technology to realize railway special communication services was brought up and the feasibility was analyzed.
每个参考拓扑专用于客户的应用和用于这些应用中的现场通信技术。
Each reference topology is tailored to the customers' applications and the field communication technologies used in these applications.
随着通信技术的飞速发展，计算机网络对于专用通信网络的重要性日益增加。
With the rapid development of communication technology, computer networks are getting more and more important for the special communication networks.
同时根据智能网技术的特点，以这种方式实现的铁路专用通信系统可与数据网互联，便于拓展业务，前景广阔。
At last , according to the feature of IN technology, this method gives some good ways to interwork with other data networks and it is convenient to develop the new services.
专线通信技术特点是通信稳定性好，但需铺设专用通信线路，存在施工量大、综合成本高、维护费用高、旧城区施工难度大等问题。
However, the exorbitant cost of laying special lines and maintenance, great workload and difficulty in construction prevent it from popularization.
专线通信技术特点是通信稳定性好，但需铺设专用通信线路，存在施工量大、综合成本高、维护费用高、旧城区施工难度大等问题。
However, the exorbitant cost of laying special lines and maintenance, great workload and difficulty in construction prevent it from popularization.
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