摘要： PC-Phone业务已经成为目前业界关注的焦点，该文研究了以SIP为会话初始协议的一个支持视频和音频的多媒体可视软件电话(Soft Pone)设计与实现，并在此基础上提出了一种改进的LZW无损压缩算法实现对Soft Phone中SIP文本消息的无损压缩，达到了降低传输延迟、缩短会话建立时间的目的。
关键词:
会话初始协议,
软电话,
LZW算法,
下一代网络
Abstract: PC-Phone service has recently become focal point. Soft Phone is a kind of software which can sustain audio and video multimedia session. This thesis investigates and applies this software based on SIP protocol, and stands out an improved LZW algorithm, which realizes the compression of SIP messages to decrease the transmission delay and shorten the session setup-time.
Key words:
session initiation protocol (SIP),
Soft Phone,
Lempel-Ziv Welch (LZW) algorithm,
next generation network (NGN)
中图分类号:
胡 颖;姜建国. 改进的无损压缩算法在软电话中的研究与应用[J]. 计算机工程, 2007, 33(22): 272-273,.
HU Ying; JIANG Jian-guo. Investigation & Application of Improved Lossless Compression Algorithm in Soft Phone[J]. Computer Engineering, 2007, 33(22): 272-273,.