TDX-10 recorded announcement system using ADPCM coding technique

Author

Yoo, Dcuk-Su ; Shin, Dong-Jin ; Lee, Jae-Gil ; Lee, Hyeong Ho

Author_Institution

Electron. & Telecommun. Res. Inst., Daejeon, South Korea

fYear

1989

fDate

22-24 Nov 1989

Firstpage

694

Lastpage

696

Abstract

The interwork, hardware configuration, and design specification of a recorded announcement system are presented. The system, which is called the ready-made message announcement system (RMAS), has been developed for the TDX-10 electronic switching system. The main function of the system is to give the calling party an announcement message of why a call was not completed and what further action should be taken or to announce a message as a special service when a call was processed normally. RMAS consists of a software unit, an announcement primary-function software unit (APSU), and a hardware unit, called the announcement primary-function hardware unit (APHU), which is described

Keywords

automatic telephone systems; electronic messaging; electronic switching systems; pulse-code modulation; ADPCM coding; RMAS; TDX-10 electronic switching system; primary-function hardware unit; primary-function software unit; ready-made message announcement system; recorded announcement system; telephone system; Delta modulation; Hardware; IEEE news; Magnetic devices; Modulation coding; Nonvolatile memory; Pulse modulation; Random access memory; Switching systems; System testing;

fLanguage

English

Publisher

ieee

Conference_Titel

TENCON '89. Fourth IEEE Region 10 International Conference

Conference_Location

Bombay

Type

conf

DOI

10.1109/TENCON.1989.177033

Filename

177033