By Mauricio G.C. Resende, Panos M. Pardalos

A lot of the guide issues community layout and the various optimisation matters that come up. therefore linear programming figures prominently as a big optimisation approach.

For the particular networks, they're now usually optical fibers, as copper networks are being actively phased out. mobile networks are also seriously mentioned. the following, optimisation difficulties frequently contain discovering optimum placements of base stations, topic to geographical and envisioned site visitors rather a lot.

Various routing tools are mentioned for switching packets throughout a community. a few of these were used for years. site visitors load projections for years to come are given. a tremendous challenge is construction out enough potential to deal with those quite a bit. Very nontrivial and costly topic.

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8. In a multisite deployment, both IP Phone packets are affected by WAN failures. a. Data, video b. Signaling, data c. Data, media d. Signaling, media and Which two of the following are dial plan issues requiring a CUCM solution in multisite deployments? a. Overlapping directory numbers b. Overlapping E. 164 numbers c. Variable-length addressing d. Centralized call processing e. Centralized phone configuration What is a requirement for performing NAT for Cisco IP Phones? a. Use DHCP instead of fixed IP addresses b.

164 international dialing b. External dialing from an IP Phone to the PSTN c. VoIP security for phone dialing d. The ability of an outside user to directly dial into an internal phone Which of the following statements is the least accurate about IP networks? a. EP packets can be delivered in the incorrect order. b. Buffering results in variable delays. c. Tail drops result in constant delays. d. Bandwidth is shared by multiple streams. Which statement most accurately describes overhead for packetized voice?

Using the IP WAN link for cost reduction c. Using the IP WAN link for cost reduction with remote routing over the WAN, and then transferring into a local PSTN call at the remote gateway d. Using the PSTN for cost reduction with minimal IP WAN usage Review Questions 9. What is the greatest benefit of toll bypass? a. It increases the security of VoIP. b. It creates an effective implementation of Unified Communications. c. It reduces operating costs by routing internal calls over WAN links as opposed to the PSTN.

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