Switching systems and switching software development in China

Author

Chen, Jiann-Jong ; Yan, Lijun ; Li, Yuhua

Author_Institution

Beijing Univ. of Posts & Telecommun., China

Volume

31

Issue

7

fYear

1993

fDate

7/1/1993 12:00:00 AM

Firstpage

56

Lastpage

60

Abstract

The architectures of two medium-sized digital telephone switching systems that were developed in China, the DS-30 and HJD-04 systems, are discussed. The DS-30 is a 30000 line digital telephone switching system, with a total capacity of 300000 busy hour call attempts (BHCA) using digital line concentration and a time-space-time switch fabric. Its architecture is a distributed control, multistage, multiprocessor system with load and function sharing. The HJD-04 is a 30000 line digital telephone switching system, with a total capacity of 2 million BHCA. The significant feature of the HJD-04 system is its switching network, which consists of a single time switch. The structure of the switching software support environment used in China is discussed.<>

Keywords

automatic telephone systems; electronic switching systems; line concentrators; telecommunications computer control; China; DS-30; HJD-04; busy hour call attempts; digital line concentration; digital telephone switching systems; distributed control; function sharing; load sharing; multistage multiprocessor system; switching software development; time-space-time switch fabric; Communication switching; Communication system control; Computer architecture; Control systems; Linear predictive coding; Process control; Programming; Switches; Switching systems; Telephony;

fLanguage

English

Journal_Title

Communications Magazine, IEEE

Publisher

ieee

ISSN

0163-6804

Type

jour

DOI

10.1109/35.222479

Filename

222479