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Unformatted text preview: RTP such as error control. 15. The web server and media server can be two distinct machines since it is the meta-file-data file combination that is important. 2 17. Both SIP and H.323 use the Internet as a telephone network. The main difference is that H.323 uses a gateway to transform a telephone network message to an Inter-net message. See Table 29.1. 19. H.323 can also be used for video, but it requires the use of videophones. Currently most people don’t have videophones. Table 29.1 Solution to Exercise 17 Issues SIP H.323 Transport layer UDP or TCP UDP for data, TCP for control Address format IP address, e-mail address, or phone number IP address Establishment 3-way handshake H.225, Q.931, H.245 Data exchange UDP, TCP RTP, RTCP, UDP, TCP Termination BYE message Q.931...
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- Winter '09
- IP address, Transmission Control Protocol, Odd-Numbered Review Questions