摘要
对目前在北京郊区电信局通信网中使用的ＲＤＬＵ、ＳＨＥＬＴＥＲ、ＦＡＳＴＬＩＮＫ从设备组成、接口方式、组网特点以及操作维护等方面进行比较，提出在郊区局的电信网建设中要结合自身特点，对上述设备合理应用，充分发挥它们各自的优势。
This paper deals with RDLU, SHELTER, and Fastlink now used in Beijing SuburbanArea Network, makes comparison with each other on equipmenit composition, interface type, networkingcharacteristic, operation and maintenance features, set forth reasonable use of them to give full play totheir own merits.
