Audio-video network information inquiry system is based on the PBX and computer network technology, where telephone audio data transmission, video data amplification and transmission technology are applied.

• 话视网络信息检索系统集程控电话交换机技术和计算机网络技术于一体,采用了电话语音数据传输和视频数据放大传输技术,以及数据查询网络通信技术。