Public Switch Telephone Network(PSTN) is one of mature networks. 公共交换电话网是成熟的网络之一。
The GPS communication and remote control system was developed by using a modem and the public switch telephone network ( PSTN ). 介绍了采用Modem、依托公共电话网(PSTN)建立起来的远程数据通讯和控制系统。
Interconnection between SIP and PSTN ( Public Switch Telephone Network(PSTN) ) has already a corresponding SIP-T specification, the interconnection between digital trunking system and public network can be realized by SIP gateway, in order to greatly expand the function of the digital trunking communication system. 目前,SIP与PSTN(PublicSwitchTelephoneNetwork)的互通已经有相应的SIP-T规范,借助SIP网关可以实现数字集群与公众网的互通,扩展了数字集群通信系统的功能。
It has been found that this method can obtain better error resilient performance and can be applied in video transmission over Public Switch Telephone Network(PSTN) ( PSTN ) and wireless channel. 实验证明,此方法可取得较好的容错性能,可应用于公共交换电话网(PSTN)和无线信道上的视频传输。
According to the Modem correspondence protocols, the AT instructions through the design platform of VC + + 6. 0 have been configured in the foundation of public switch telephone network in the system. 该系统是在公用开关电话网的基础上,以VC++6.0为开发平台,根据Modem的通信协议,来进行AT指令的配置的。