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

By Kevin Wallace

I've got my ccnp and ccna instant, so i have been via 6 different ciscopress books. althoug this ccvp e-book is okay, it rambles over an analogous topics method too lengthy. i will not comprehend if it truly is on the right track for the attempt until eventually i take the try, yet thus far it kind of feels mediocre in comparison to the opposite ciscopress books i have got.

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728) between devices in different sites. ■ High-bandwidth video (for example, 384 kbps or greater) between devices in the same site and low-bandwidth video (for example, 128 kbps) between devices at different sites. The Cisco Unified Video Advantage Wideband Codec, operating at 7 Mbps, is recommended only for calls between devices at the same site. ■ Minimum of 768 kbps or greater WAN link speeds. Video is not recommended on WAN connections that operate at speeds lower than 768 kbps. ■ UCM locations provide call admission control, and automated alternate routing (AAR) is also supported for video calls, which allows calls to flow over the PSTN if a call across the WAN is rejected by the locations feature.

Gateway trunks that connect directly to the PSTN handle all external calls. If an IP WAN exists between sites, it is used to carry data traffic only; no telephony services are provided over the WAN. Chapter 1: Introducing Voice over IP Networks Design Characteristics of Single-Site Deployment The single-site model has the following design characteristics: ■ Single Cisco UCM cluster. ■ Maximum of 30,000 SCCP or SIP IP phones or SCCP video endpoints per cluster. 323 devices (gateways, MCUs, trunks, and clients) or MGCP gateways per UCM cluster.

31 32 Authorized Self-Study Guide: Cisco Voice over IP (CVOICE) Figure 1-20 Cisco AS5400XM Universal Gateway Figure 1-21 Cisco AS5850 Universal Gateway Cisco 827-4V ADSL Router The Cisco 827-4V ADSL Router, shown in Figure 1-22, provides business-class functionality for small businesses, small remote offices, and corporate teleworkers using Cisco IOS technology. It enables service providers and resellers to increase service revenue by Chapter 1: Introducing Voice over IP Networks supporting features for business-class security, integrated toll quality voice and data, differentiated service classes, and managed network access.

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