请输入您要查询的字词:

 

单词 line
释义

line

1. A station line refers to the circuit between a private branch exchange (PBX) switch and a station user’s terminal equipment, which usually is in the form of telephone, although it could be a computer workstation, a printer, a facsimile machine, or some other device. 2. In rate and tariff terminology, line refers to a local loop connection from the telephone company central office (CO) switch to the user premises in support of customer premises equipment (CPE) other than a switch. Such CPE can be in the form of a single-line residence or business set, a multiline set, or the common control unit of a key telephone system (KTS). Such a line is single-channel in nature, i.e., supports a single conversation and is voice grade, i.e., provides enough bandwidth to support a voice conversation, and has a single associated telephone number. A line may be thought of as a tributary of a trunk. See also line side, trunk, and trunk side.

74570c12.qxd 9/11/07 12:25 PM Page 287

随便看

 

科学参考收录了5291条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。

 

Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号 更新时间:2024/12/27 19:21:11