Authorized self-study guide: Cisco Voice over IP by Kevin Wallace

By Kevin Wallace

I've got my ccnp and ccna instant, so i have been via 6 different ciscopress books. althoug this ccvp booklet is okay, it rambles over an identical topics approach too lengthy. i will not be aware of if it really is heading in the right direction for the attempt until eventually i take the attempt, yet up to now it sort of feels mediocre in comparison to the opposite ciscopress books i have acquired.

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Depending on the protocol and the extent of the loss, a client might be able to recover lost data with error correction techniques, might interpolate over the missing data, or might suffer a data dropout. RTP and the RTCP were specifically designed to stream media over networks. They are both built on top of UDP. Real-Time Transport Protocol RTP defines a standardized packet format for delivering audio and video over the Internet. It was developed by the Audio-Video Transport Working Group of the IETF and was first published in 1996 as RFC 1889, which was made obsolete in 2003 by RFC 3550.

The Cisco 3800 Series also supports the existing portfolio of Cisco modular interfaces. This accommodates network expansion or changes in technology as new services and applications are deployed. By integrating the functions of multiple separate devices into a single compact unit, the 3800 Series reduces the cost and complexity of managing remote networks. 25 26 Authorized Self-Study Guide: Cisco Voice over IP (CVOICE) Figure 1-11 Cisco 3800 Series Integrated Services Routers New 3800 Series models include the Cisco 3825 Integrated Services Router and the Cisco 3845 Integrated Services Router, available with three optional configurations for AC power, AC power with integrated inline power support, and DC power.

Table 1-1 lists issues associated with implementing VoIP in a converged network and solutions that address these issues. Table 1-1 Issues and Solutions for VoIP in a Converged Network Issue Solutions Latency Increase bandwidth. Choose a different codec type. Fragment data packets. Prioritize voice packets. Jitter Use dejitter buffers. Prioritize voice packets. Bandwidth Calculate bandwidth requirements, including voice payload, overhead, and data. Packet loss Design the network to minimize congestion.

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