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  • 软件语言:简体中文
  • 授权方式:免费软件
  • 运行环境:PDF
  • 软件类型:国产软件/网络安全
  • 相关链接: 演示 官方
  • 收录/更新:2010-03-31/2010-03-31
  • 软件大小:288KB
  • 发布者:admin
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软件简介

A Primer on Asynchronous Modem Communication
by
Winfield Stanton and Thomas Spencer
Last Updated: May 1998
This paper covers the basic RS-232 signaling, error correction, compression, and modulation standards.
In the near future, the asynchronous modem will continue to be an important means of transferring
information to and from the personal computer. By some estimates, more than 60 percent of people who
access the Internet do so with a conventional dial-up modem and a connection to an analog telephone
line (You may be connecting to a bulletin board system (BBS) through a piece of
communications software or you may be using the Windows NT? Remote Access Service (RAS) to dial
out to your Internet Service Provider (ISP). Whether you use a simple file transfer protocol such as
XMODEM or another protocol such as TCP/IP over the RAS Point-to-Point (PPP) protocol, the underlying
asynchronous communications issues are the same.


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