TCP标准通讯，技术成熟可靠，传输速率快，各种配套的网络设备十分丰富， 使用者接受程度最高， 全球免费使用，是区域无线通讯的首选方案。-TCP standard communications, technology is mature, reliable, fast transfer rates, various ancillary network equipment is very rich, Highest user acceptance worldwide free of cha