ELECTRONIC KEY TELEPHONE SYSTEM FOR SMALL OR MEDIUM OFFICES.

被引：0

作者：

Yamazaki, Yuichi

Ishii, Kenichi

Kubo, Teruyuki

机构：

来源：

Reports of the Electrical Communication Laboratory | 1983年 / 31卷 / 04期

关键词：

OFFICE EQUIPMENT;

D O I：

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摘要：

An electronic key telephone system has been developed for use in today's business environment, which requires as many 24 extension telephone sets. The system uses the microprocessor technology to offer many advanced facilities. Special features for this system are as follow: (1) The system is controlled by distributed controlled method, composed of 4 bit microcomputer. (2) The speech path switch matrix is composed of optically coupled high-voltage PNPN crosspoint arrays.

引用

页码：516 / 523