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作为对基于地球的帧中继主干网的改变,寻呼供应商开始转向卫星技术——他们称这一改变可以使他们的双向寻呼网络更易于管理并且也更可靠。据 AvData 的官员称,在蜂窝电话工业联盟主办的Wireless′97展览会上,PageMart 无线公司宣布,它已经和AvData 系统公司签署了价值1700万美元的合同。其主要内容是:亚特兰大的 AvData 公司将为 PageMart 即将推出的NB-PCS(窄带个人通信服务)双向寻呼网络提供 VSAT(超小孔径卫星终端)基础结构系统。据称,该网络将在今年晚些时候运行。PageMart 的官员在达拉斯宣称,除了
As a change to the Earth-based Frame Relay backbone, paging providers are turning to satellite technology - which they say makes their two-way paging networks easier to manage and more reliable. According to AvData officials, PageMart Wireless announced at the Wireless’97 show hosted by the cellular phone industry coalition that it has signed a $ 17 million contract with AvData Systems. Its main content is: Atlanta-based AvData will provide the VSAT (Ultra Small Aperture Satellite Terminal) infrastructure system for PageMart’s forthcoming NB-PCS (Narrowband Personal Communications Services) two-way paging network. Allegedly, the network will be operational later this year. PageMart officials declared in Dallas, except