However,B-ISDN and 64kb/s based ISDN will be co-exist for quite long time,In this paper,in-terworking communication scenarios for these two networks,services and connection types are described.

• 但B－ISDN的发展是与64kb/sISDN长期共存的，所以研究B－ISDN与64kb/sISDN的互通是非常必要的。 本文将介绍这两种网络的互通通信流程、业务及连接类型；