在电信事业高速发展的今天,我们已经能够通过民航卫星通信网或者是通过数字程控电话交换机来组织大规模的电话全议,但是,由于其功能单一甚至延迟明显,更由于新兴而先进的可视通信技术已经走向成熟,使我们对电话通信有了更新的认识和更高的要求。现在,通过公众综合业务数字网(ISDN)组织民航的可视通信业务已经可望而可及,真正成为“千里眼”和“顺风耳”的美好前景即将展现在我们面前。 Today, the rapid development of telecommunications industry, we have been able to organize large-scale full-scale phone through civil aviation satellite communication network or through digital program-controlled telephone exchange, but because of its single function even delay is obvious, but also because of the emerging and advanced visual Communication technology has matured, giving us newer understanding and higher requirements for telephony. Now that the visual communication business of civil aviation is organized through the ISDN, the real prospect of becoming “clairvoyant” and “down-to-earth” is about to come to our forefront.