PC TO PC IP Phone的研究
摘要
90年代中期以来，Internet的飞速发展对电信业产生了巨大而深远的影响，基于分组交换网络的多媒体通信系统逐渐成为人们关注的焦点。音频和视频压缩技术、实时数据传输技术及网络技术的成熟，使得在IP网络上实现多媒体通信成为可能。IP Phone作为一种新型的语音通信技术，已经越来越多的渗透到人们的实际生活中。简单地说，IP Phone就是在IP网上实现电话功能。IP Phone技术作为一种以IP网络为传输载体的语音和传真通信技术，在语音传输方面效率高、费用低。IP Phone技术的应用很广泛，特别是与电话网、多媒体技术结合，可以开拓出多种多样的新业务。我们研究IP Phone不仅限于IP Phone本身，更重要的是着眼于IP多媒体通信和IP电话的各种增值业务的应用。而且VoIP作为当前电信业务中发展最迅速的部分，更值得我们深入研究。
基于以上的考虑，本论文应用IP电话的关键技术设计实现了一个广域网环境下的PC到PC结构IP电话软件。并对与IP Phone相关的网络协议，工作原理，关键技术进行了深入的研究。通过对IP Phone的研究，了解和掌握了当前国内外相关领域的发展动态和方向。同时，对该软件进行扩展可以实现可视软件，视频会议系统等业务。
本论文首先讨论了与IP Phone相关的协议、标准、关键技术及其工作原理，然后探讨了语音编码技术，数据包的发送与接收，以及音频录制和播放。并且阐述了PC TO PC结构IP电话的系统分析、系统设计、系统实现。该PC TO PC结构IP Phone软件成功实现了广域网环境下语音录制和播放，经过实践证明，达到了良好的预期效果。并为进一步完善功能打下了坚实的基础。
IP Phone仍然面临着许多问题和挑战，需要人们进一步研究和探讨才能更好的服务于人类。
From the 90's middle period, the fast development of Internet takes great effect on the telecommunication trade, and multimedia communication system based on the packet switching network becomes the focus of people's concern. Audio frequency and video frequency compression technology, real-time data transmission technology and network technology make it impossible to achieve multimedia communication on IP network. IP Phone is one kind of new sound communication technologies and has taken great effect in actual lives. In brief, IP Phone means achieving phone function on IP network. As one kind of voice and facsimile communication technology based on IP network, IP Phone technology possesses high transmission efficiency and low fee. It has been applied in many broad fields. If combined with phone network and multi-media technology, the IP Phone technology can create various new businesses. We not only research IP Phone itself, but also focus on IP multi-media communication and various IP phone applications. Since VoIP develops quickly in the present telecommunication service, we should research thoroughly VoIP technology.
Over these considerations, this paper makes a PC-PC IP Phone software on Internet by IP Phone key technologies. Moreover the paper researches thoroughly network protocols, work theories, key technologies that relate IP Phone. By means of researching IP Phone, I know and master the development trends of IP Phone at home and abroad. By adding some functions, we can develop the software to a video phone software or a video conference system and so on.
First of all, the paper discusses protocols, standards, key technologies and work theories that relate with IP Phone. It probes into the speech encoding technologies, sending and reception of data packet, recording and playing of audio frequency. Finally, the paper sets forth PC-PC IP Phone system analysis, system design and system implementation. The IP Phone software successfully makes recording and playing of speech on Internet. And the software achieves well predictive effect in practice. Moreover it makes the substantial base for further improving the functions.
IP Phone confronts with many problems and challenges. People should further research and probe into IP Phone to serve human beings.
基于以上的考虑，本论文应用IP电话的关键技术设计实现了一个广域网环境下的PC到PC结构IP电话软件。并对与IP Phone相关的网络协议，工作原理，关键技术进行了深入的研究。通过对IP Phone的研究，了解和掌握了当前国内外相关领域的发展动态和方向。同时，对该软件进行扩展可以实现可视软件，视频会议系统等业务。
本论文首先讨论了与IP Phone相关的协议、标准、关键技术及其工作原理，然后探讨了语音编码技术，数据包的发送与接收，以及音频录制和播放。并且阐述了PC TO PC结构IP电话的系统分析、系统设计、系统实现。该PC TO PC结构IP Phone软件成功实现了广域网环境下语音录制和播放，经过实践证明，达到了良好的预期效果。并为进一步完善功能打下了坚实的基础。
IP Phone仍然面临着许多问题和挑战，需要人们进一步研究和探讨才能更好的服务于人类。
From the 90's middle period, the fast development of Internet takes great effect on the telecommunication trade, and multimedia communication system based on the packet switching network becomes the focus of people's concern. Audio frequency and video frequency compression technology, real-time data transmission technology and network technology make it impossible to achieve multimedia communication on IP network. IP Phone is one kind of new sound communication technologies and has taken great effect in actual lives. In brief, IP Phone means achieving phone function on IP network. As one kind of voice and facsimile communication technology based on IP network, IP Phone technology possesses high transmission efficiency and low fee. It has been applied in many broad fields. If combined with phone network and multi-media technology, the IP Phone technology can create various new businesses. We not only research IP Phone itself, but also focus on IP multi-media communication and various IP phone applications. Since VoIP develops quickly in the present telecommunication service, we should research thoroughly VoIP technology.
Over these considerations, this paper makes a PC-PC IP Phone software on Internet by IP Phone key technologies. Moreover the paper researches thoroughly network protocols, work theories, key technologies that relate IP Phone. By means of researching IP Phone, I know and master the development trends of IP Phone at home and abroad. By adding some functions, we can develop the software to a video phone software or a video conference system and so on.
First of all, the paper discusses protocols, standards, key technologies and work theories that relate with IP Phone. It probes into the speech encoding technologies, sending and reception of data packet, recording and playing of audio frequency. Finally, the paper sets forth PC-PC IP Phone system analysis, system design and system implementation. The IP Phone software successfully makes recording and playing of speech on Internet. And the software achieves well predictive effect in practice. Moreover it makes the substantial base for further improving the functions.
IP Phone confronts with many problems and challenges. People should further research and probe into IP Phone to serve human beings.
引文
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2.Goyal P, Greenberg A. Intergration of call signaling and resource management for IP telephony, IEEE Network, 1999,13(3): 24-32
3.Leavitt N. Will 1999 be the year of IP telephony. Computer, 1999, 23(3): 15-17
4.Black U D. Network Management Standards. New York: McGraw-Hill, 1992
5.Weidong Kou. Networking security and standards. Boston: Kluwer Academic, 1997
6.Gloralski, Kolon. IP Telephony. New York: McGraw-Hill, 1999
7.ITU-T. Packet Based Multimedia Communications Syatem. ITU-T H. 323 V2
8.Fraidoon Mazda. Packet Based Communications (TeleCommunication Series). New York: McGraw-Hill, 1999
9.Syed Riffat Ali. Digital Switching System: System Reliability and Analysis. London: Belwen Press, 1998
10.Schulzrinne, S. Casner, R. Frederick, Ⅴ. Jacobson. RTP: A Transport Protocol for ReM-Time Applications RFC 1889,1996-01
11.H. Schulzrinne, RTP Profile for Audio and Video Conferences with Minimal Control, RFC 1890,1996-01
12.ITU-T Recommendation G.723.1, Dual rate speech coder for multimedia communications transmitting at 5.3 and 6.3 kbit/s, 1996
13.ITU-T Recommendation H.261, Video codec for audiovisual services at 64 kbits, 1993
14.ITU-T Recommendation H.263, Video coding for low bit rate communication, 1996
15.ITU-T Recommendation H. 323 v2, Packed based multimedia communications systems, 1998
16．周明天 汪文勇，TCP／IP网络原理与技术，清华大学出版社，1993
17．黎红长，IP电话技术(上)，世界网络与多媒体，1999，12(52)
18．李鹏、朱光喜，视频会议中音频的Qos控制，计算机与通信，1999，9(42)
19．鲁翔、孙国振等，Internet上保证实时数据传输的协议——RTP，世界网络与多媒体，1999，3
20．黎红长，IP电话技术(上)，世界网络与多媒体，1999，12
21．石峻等，Windows环境下的实时视频捕获技术，计算机工程，1998，8
22．韦乐平，基于现有电信网的下一代电信网的发展，电信商情，1998，8
23．王波，Internet电话的现状及发展，世界电信，1999，7
24．侯自强，IP路由技术演化及发展趋势，现代电信科技，1999，2
25．张应中等，数字通信工程，人民邮电出版社，1998
26．谢希仁，分组语音通信，科学出版社，1996
27．朱利等，基于RTP的IP视频传输与控制，计算机工程与应用，1999-6
28．罗伟其，IP电话的原理、技术、发展，计算机工程与应用，2000-2
29．舒华英，赖平漳，IP电话技术及其应用，人民邮电出版社，1999-11
30．洪峰，IP Phone技术，人民邮电出版社，2000-2
31．糜正琨，IP网络电话技术，人民邮电出版社，2000-6
32．陈永彬，语音信号处理，上海交通大学出版社，1991-1
33．谷保山，Visum C++ 6.0 编程与实例，科学出版社，1999
34．Kruglinski D J 著，王国印译，Visual C++ 技术内幕，清华大学出版社，1994
35．(美)Kate Gregory著，Visual C++6开发使用手册，1999-2
36．胡光锐，语音处理与识别，上海科学技术文献出版社，1994．12
37．T.W.Parsons著，文成义等译，语音处理，国防工业出版社，1990-4
38．朱民雄编著，计算机语语音技术，北京航空航天大学出版社，1992．8
39．陈永彬编著，语音信号处理，上海交通大学出版社，1991．1
40．杨行峻 迟惠生等编著，语音信号数字处理，电子工业出版社，1995．8
41．胡航编著，语音信号处理，哈尔滨工业大学出版社，2000．5
42．T.W.Parsons著，文成义等译，语音处理，国防工业出版社，1990．4
43．周崇经编著，滤波理论与语音编码，辽宁科学技术出版社，1986．12
44．M.A.萨波日科夫等著，王世福等译，声码器通信，宇航出版社，1988．4
45．巴继东编著，IP技术与综合宽带网，北京邮电出版社，2000．3
46．张磊等编著，VoIP语音技术及应用，机械工业出版社，2000．6
47．马自卫，Internet实用技术，人民邮电出版社，1996
48．舒华英等，IP电话技术及其应用，人民邮电出版社，200l
49．Olivier Hersent著，邝坚等译，IP电话—基于分组的多媒体通信系统，人民邮电出版社，2000
50．Walter J.Goralski著，舒华英等译，IP电话原理技术应用，人民邮电出版社，2000
51．洪峰，IP Phone技术，人民邮电出版社，2000
2.Goyal P, Greenberg A. Intergration of call signaling and resource management for IP telephony, IEEE Network, 1999,13(3): 24-32
3.Leavitt N. Will 1999 be the year of IP telephony. Computer, 1999, 23(3): 15-17
4.Black U D. Network Management Standards. New York: McGraw-Hill, 1992
5.Weidong Kou. Networking security and standards. Boston: Kluwer Academic, 1997
6.Gloralski, Kolon. IP Telephony. New York: McGraw-Hill, 1999
7.ITU-T. Packet Based Multimedia Communications Syatem. ITU-T H. 323 V2
8.Fraidoon Mazda. Packet Based Communications (TeleCommunication Series). New York: McGraw-Hill, 1999
9.Syed Riffat Ali. Digital Switching System: System Reliability and Analysis. London: Belwen Press, 1998
10.Schulzrinne, S. Casner, R. Frederick, Ⅴ. Jacobson. RTP: A Transport Protocol for ReM-Time Applications RFC 1889,1996-01
11.H. Schulzrinne, RTP Profile for Audio and Video Conferences with Minimal Control, RFC 1890,1996-01
12.ITU-T Recommendation G.723.1, Dual rate speech coder for multimedia communications transmitting at 5.3 and 6.3 kbit/s, 1996
13.ITU-T Recommendation H.261, Video codec for audiovisual services at 64 kbits, 1993
14.ITU-T Recommendation H.263, Video coding for low bit rate communication, 1996
15.ITU-T Recommendation H. 323 v2, Packed based multimedia communications systems, 1998
16．周明天 汪文勇，TCP／IP网络原理与技术，清华大学出版社，1993
17．黎红长，IP电话技术(上)，世界网络与多媒体，1999，12(52)
18．李鹏、朱光喜，视频会议中音频的Qos控制，计算机与通信，1999，9(42)
19．鲁翔、孙国振等，Internet上保证实时数据传输的协议——RTP，世界网络与多媒体，1999，3
20．黎红长，IP电话技术(上)，世界网络与多媒体，1999，12
21．石峻等，Windows环境下的实时视频捕获技术，计算机工程，1998，8
22．韦乐平，基于现有电信网的下一代电信网的发展，电信商情，1998，8
23．王波，Internet电话的现状及发展，世界电信，1999，7
24．侯自强，IP路由技术演化及发展趋势，现代电信科技，1999，2
25．张应中等，数字通信工程，人民邮电出版社，1998
26．谢希仁，分组语音通信，科学出版社，1996
27．朱利等，基于RTP的IP视频传输与控制，计算机工程与应用，1999-6
28．罗伟其，IP电话的原理、技术、发展，计算机工程与应用，2000-2
29．舒华英，赖平漳，IP电话技术及其应用，人民邮电出版社，1999-11
30．洪峰，IP Phone技术，人民邮电出版社，2000-2
31．糜正琨，IP网络电话技术，人民邮电出版社，2000-6
32．陈永彬，语音信号处理，上海交通大学出版社，1991-1
33．谷保山，Visum C++ 6.0 编程与实例，科学出版社，1999
34．Kruglinski D J 著，王国印译，Visual C++ 技术内幕，清华大学出版社，1994
35．(美)Kate Gregory著，Visual C++6开发使用手册，1999-2
36．胡光锐，语音处理与识别，上海科学技术文献出版社，1994．12
37．T.W.Parsons著，文成义等译，语音处理，国防工业出版社，1990-4
38．朱民雄编著，计算机语语音技术，北京航空航天大学出版社，1992．8
39．陈永彬编著，语音信号处理，上海交通大学出版社，1991．1
40．杨行峻 迟惠生等编著，语音信号数字处理，电子工业出版社，1995．8
41．胡航编著，语音信号处理，哈尔滨工业大学出版社，2000．5
42．T.W.Parsons著，文成义等译，语音处理，国防工业出版社，1990．4
43．周崇经编著，滤波理论与语音编码，辽宁科学技术出版社，1986．12
44．M.A.萨波日科夫等著，王世福等译，声码器通信，宇航出版社，1988．4
45．巴继东编著，IP技术与综合宽带网，北京邮电出版社，2000．3
46．张磊等编著，VoIP语音技术及应用，机械工业出版社，2000．6
47．马自卫，Internet实用技术，人民邮电出版社，1996
48．舒华英等，IP电话技术及其应用，人民邮电出版社，200l
49．Olivier Hersent著，邝坚等译，IP电话—基于分组的多媒体通信系统，人民邮电出版社，2000
50．Walter J.Goralski著，舒华英等译，IP电话原理技术应用，人民邮电出版社，2000
51．洪峰，IP Phone技术，人民邮电出版社，2000