Signaling Systems for Distributed Micro-Switching Networks in HO-ISDN

Takahiko YAMADA  

IEICE TRANSACTIONS on Communications   Vol.E77-B   No.6   pp.781-793
Publication Date: 1994/06/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Communication Networks and Service
communication network and services,  signaling system and communication protocol,  

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This paper discusses a common channel signaling system in which multiple micro-switching systems can converse as though configured like a conventional centralized switching system. A micro-switching system is a switching system whose main functions are integrated on a chip, like a microprocessor. Progress in MOS technology will soon make micro-switching systems possible, and their small scale and economy will allow subscriber switching systems to be distributed closer to subscribers. This will allow shorter subscriber loops, so subscriber networks will be able to reuse existing metallic lines as H1 (1.544/2.048Mb/s)-class subscriber loops. Economical micro-switching systems and reuse of existing network resources will contribute to the establishment H0 (384kb/s)-ISDN, so that every subscriber will be able to enjoy multimedia communications through HO-calls as simply as using present telephones. Four alternative signaling network architectures are examined, classified by arrangement of their signaling transfer junctions and signaling links, and a new signaling system featuring cell-based transfer functions is proposed. This is suitable for a distributed micro-switching-system network in order to minimize the figures of merit, which collectively estimate network cost and signaling delay.