Protocol for a Distributed Switching Interactive Catv Network

In this report, we present a fast switching network protocol for a distributed switching two-way interactive CATV system. The backbone network protocol takes advantage of the tree topology of the CATV network to reduce the processing time and memory requirements at the intermediate nodes. Backbone virtual circuit switching is assumed. The concept of fixed hierarchical logical channel number is suggested since it will provide for fast switching at the network layer within the intermediate nodes along with a node address or identifier. Discussion of the directory database problem and the different methods for locating a specific user are presented. A modified version of High-level Data Link Control is suggested for the local access protocol, incorporating the functions of call set-up and clearing at the link level. PACS numbers: 47.10.