The article discussed how to upgrade the communication networks of CATV system and telephone system to support multimedia information service system, and introduced hybrid fiber coax and asymmetric digital subscriber line access technology.

• 讨论了如何将现有的有线电视传输网络以及电话通讯网络升级，以适合多媒体信息服务系统技术的需要，同时也介绍了光纤电缆混合网和非对称数字用户线等适合于多媒体信息服务系统的接入技术。