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(NEC北京事务所讯)日前NEC与中国签订了输出国际海事卫星(INMARSAT)数字通信系统的合同。此次中国将把引进的INMARSAT M/B通信系统用于船舶航行通信,几年后还要将此系统应用于陆地移动通信。 以前中国一直使用从欧洲引进的模拟方式的INMARSAT A型通信系统,A型系统是以话音通信为中心。而引入M/B型数字通信方式后,除进行通常的电话业务外还可进行数据通信或发送传真等。 NEC提供的M/B型也能适用于手持便携式终端上。几年后中国将利用INMARSAT的新卫星,使用小型终端(INMARSAT-P),特别是在内陆的油田开发或城市基建等方面,小型终端将得以普及。
(NEC Beijing Office) NEC and China signed a contract for the export of INMARSAT digital communication systems. This time China will use the imported INMARSAT M/B communication system for ship navigation communications and this system will be applied to land mobile communications several years later. In the past, China had been using INMARSAT A-type communication systems imported from Europe in analog mode. The A-type system was centered on voice communication. With the introduction of the M/B digital communication method, data communication or fax transmission can be performed in addition to the usual telephone service. The M/B type provided by NEC can also be applied to handheld portable terminals. In a few years, China will use INMARSAT’s new satellites to use small terminals (INMARSAT-P), especially in inland oilfield development or urban infrastructure, and small terminals will be popularized.