subscriber telephone

Designing of the Telephone Subscriber Maintenance and Management System Based on ASP

基于ASP的电话用户维护管理系统设计

A subscriber to a telephone party line.

电话系统失灵了.

This paper describes an important part of subscriber line interface circuit in digital telephone switching systems the new generation Codec based on DSP ( Digital Signal Processing) and ΣΔ modulation technologies.

介绍了数字电话系统中用户线接口电路的一个重要电路&基于数字信号处理（dsp）和∑Δ调制技术的新一代编解码器（codec）。

The principle, characters and realization method of long distance automatic connection between two subscriber's exchanges with loop carrier telephone terminal are presented.

提出了两台用户交换机之间通过环路载波机进行远距离自动转接的方案，并给出其原理、特点和实现方法。

XDSL have been considered the one of the technologies which have the good fortune and feasibility in recent years. xDSL systems are built upon the existing twisted-pair telephone subscriber loop plant and can provide different bandwidth by different modulation technologies, so different transmission rates are fulfilled.

xDSL技术被看作近年来最具发展前途和可行性的主流技术之一，xDSL是以现有的入户铜绞线为介质基础，通过不同的调制方式提供不同的带宽，从而实现不同速度的网络用户接入技术。