Advanced subscriber line interface circuit using a per-line architecture

被引：0
|
作者：
Ishizawa, Akira [1 ]
Hamazato, Kazuo [1 ]
Oikawa, Yoshinori [1 ]
机构：
[1] NTT Network Service Systems Lab, Japan
来源：
NTT R and D | 1998年 / 47卷 / 01期
关键词：
Switching systems - Telephone lines;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In the development of NTT's next-generation communications switching system NS8000, we developed a small low-power subscriber line interface circuit (SLIC) for analog interface terminals. This SLIC greatly decreases power consumption in the system by using a semiconstant current battery feed that limits the maximum line current. It has a simplified line test function and an off-talk service interface function, so there is no need for extra testing equipment for short line subscribers or for extra off-talk service equipment. For ease of maintenance, it has a per-line configuration, i.e. one line per card, and has a common card interface with an office channel unit (OCU). This paper describes the architecture for this SLIC and evaluates a prototype.
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页码：17 / 22
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