论文部分内容阅读
5月16日,在北京举行的第二届 IP 语音网络技术研讨会上,Cisco 公司副总裁及分组电话部门的市场执行总监 AlistairWoodman 先生做了主题为“IP 电话的现在和未来”的讲演,在讲演中,Woodman 先生为大家分析了市场上 VolP业务的动态,以及 VoIP 的整体结构,尤其是对 PSTN 和 VoIP 是并存还是前者将被后者所替代的问题进行了阐述,并指出两者将会长期并存。传统的电话网络 PSTN 如今正面临VoIP 的挑战,相对于前者,VoIP 具有极大的价格优势。而价格常常是决定孰胜孰败的关键因素之一。对此,Woodman先生认为,对于已经存在的 PSTN,VoIP应该是并行于它的交换网,两者将会同时运行,互相补充,其原因是这样可以大大减低单网运行的危险性。很多时候,由于 VoIP 电话网络是非连通性传输,其数据包丢失的可能性远大于 PSTN,所以,对于许多关键业务,譬如涉及重要财务数据的语音交换,人们宁愿使用相对较昂贵但更加安全的传统的电话网络。从而可以得出结论,PSTN 和 VoIP将会长期并存。对于 VoIP 的未来趋势,他表示了很
On May 16, at the 2nd IP Voice Networking Symposium held in Beijing, Alistair Woodman, Vice President of Marketing and Director of Group Telephony Marketing, delivered a speech entitled “The Present and Future of IP Telephony,” at In his speech, Mr. Woodman analyzed the market dynamics of VolP services and the overall structure of VoIP. In particular, he elaborated on the coexistence of the PSTN and VoIP or whether the former will be replaced by the latter and pointed out that both will Long-term co-existence. The traditional telephone network PSTN is now facing the challenge of VoIP, compared to the former, VoIP has a great price advantage. And the price is often one of the key factors that determine the winner or the winner. In this regard, Mr. Woodman believes that for the existing PSTN, VoIP should be parallel to its switching network, both of which will run at the same time, complement each other, because it can greatly reduce the risk of single network operation. In many cases, VoIP telephony networks are much less likely to lose packets than PSTN due to their non-contiguous transmission, so people prefer to use relatively more expensive but more secure traditional voice services for many critical services, such as voice exchanges involving important financial data Telephone network. It can be concluded that the PSTN and VoIP will coexist for a long time. He said very much about the future trend of VoIP