By Andrew Froehlich
VoIP and convergence are sizzling themes, and the CVOICE 8.0 examination pursuits applicants seeking to cross examination 642-437 and pursue their CCNP Voice certification. businesses proceed so as to add VoIP carrier at a checklist speed, and community directors are ramping up their abilities. This new member of the Sybex learn consultant sequence covers every thing you’ll want to know to go the certification exam.VoIP (Voice over IP) is speedily turning into a popular answer for firms, and Cisco has answered to the necessity with a brand new certification to guarantee skillability in VoIP technologyPrepares IT execs for the CVOICE 8.0 examination and encompasses a CD with the Sybex try Engine, flashcards, and the thesaurus in PDF format.Covers gateway elements, dial plans, uncomplicated operation and parts of VoIP, tips on how to enforce a gateway, the functionality and interoperation of gatekeepers, the way to enforce an IP-to-IP gateway, and moreAdministrators of Cisco VoIP networks will locate the entire crucial instruments for CVOICE examination luck in CVOICE 8.0: imposing Cisco Unified Communications Voice over IP and QoS v8.0 research advisor.
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Additional resources for CVOICE 8.0, with CD: Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (Exam 642-437)
A. Centralized services model 4. B. Distributed services model C. Inter-networking of services model D. Geographical diversity model Which of the following commands is the correct syntax and interface mode to configure AutoQoS for VoIP on a Cisco router? A. Router(config-if)#auto qos voip 5. B. Router(config-if)#auto qos voip cisco-phone C. Router(config)#auto qos voip D. Router(config)#auto qos voip cisco-phone What is the correct command used to configure loop-start signaling on an FXS port? A.
See Chapter 1. 4. A. The correct syntax for AutoQoS for VoIP on a router is auto qos voip. This command is performed while in interface configuration mode. See Chapter 12. 5. D. Because an FXS port is an analog connection, you will be in config-voiceport mode. The correct command while in this mode is signal loopstart. See Chapter 2. 6. D. 323 gatekeeper and not a CUBE. See Chapter 10. 7. B. Sampling at a rate of twice the highest frequency to be represented follows the Nyquist sampling theorem.
From an IP router perspective, packets enter a router interface, and they contain an IP address that identifies the destination device. The router uses the IP address to perform a routing table lookup to see which router interface is the shortest path to the destination. A CO switch is similar in that it too contains a table. But instead of IP addresses, the table consists of telephone digits. These digits have a hierarchical structure similar to IP addresses. A hierarchical structure helps to reduce the lookup table size and makes decision making faster and more efficient.