Tham khảo tài liệu 'krone - white paper - voip application in small sites', công nghệ thông tin, quản trị mạng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | whitepapers Voice over internet protocol application in small sites Introduction The term VOIP appears in many different contexts. Most literally interpreted as Voice Over Internet Protocol it represents an aspect of the trend to carry all types of communication content as IP datagrams. Nearly all businesses use data networks employing IP as the Layer 3 data encapsulation protocol. Most businesses still employ separate networks to carry telephonic voice signals. Both systems may share the same cable infrastructure but not the same cable, nor is there any interaction between them. Over the last few years the benefits of intercommunication between voice and data networks have been exploited in call centres and by other Computer Telephony Integration (CTI) applications for business such as Unified Messaging. At the same time there has been a massive growth in world-wide IP networks, including the Internet itself. Business are now able to connect disparate sites via networks totally based on IP packet delivery. The billing regime for IP based access networks is based on bandwidth consumed whilst the telephone network’s is a combination of duration of call and distance to destination. The conversion of voice into digital IP packets provides the potential for financial savings and the implementation of enhanced services. The purpose of this report is to examine the opportunities for VOIP within the small business and small site market segments. What The most straightforward implementation of VOIP is two remote PC’s, equipped with either speakers and a microphone or headsets, and support for communication via the Internet. Software handles the conversion from analogue to digital plus compression of the signal from 64Kbps down to around 8Kbps or even less. Each PC has a connection to the Internet, usually through dial up modems. The software is free, calls can be set up to anywhere in the world and, the only cost is the charge for time at local call rates. The shortcoming
