By Kevin Wallace
Grasp the fundamentals of VoIP (Voice over IP) implementation with theCisco approved self-study e-book for CVOICE origin learningMaster the fundamentals of VoIP (Voice over IP) implementation, managementand troubleshooting organize for the CVOICE 642-432 examination as you earnyour CCVP certification examine from extra content material that challengesreaders at the tougher points of this applied sciences, and is going beyondthe Cisco curriculum fabrics with real-world implementationexamples the second one version of Cisco Voice Over IP (CVOICE) providesreaders with the entire serious details had to enforce andsupport information and voice integration options on the network-accesslevel. furthermore, this ebook prepares the reader for the CVOICEcertification examination 642-432, which applies to a number of Cisco IPTelephony professional certifications and the Cisco qualified VoiceProfessional (CCVP) certification. The e-book relies at the 5.0curriculum, and has additional assurance on quite tricky parts ofthat path, similar to H.323 gateway/gatekeeper and QoS configuration.This publication will serve readers as a useful research relief and aninvaluable concept, configuration, and troubleshooting reference.Coverage begins with a evaluate for readers new to voice technologiesand keeps with in-depth details on implementation, conceptsand protocols, name keep watch over versions to be had, roadblock andtroubleshooting recommendations, and QoS matters. The ebook additionally expandsbeyond the curriculum to hide subject matters akin to WRR, AutoQoS on aCatalyst swap, LFI, utilizing MQC to configure category, marking,LLQ, WRED, policing, and shaping. How does the e-book vary from theprevious version? It comprises up to date assurance of voice technologies,IOS model 12.3 updates together with AutoQoS, H.323 improvements, MGCPenhancements, and SIP improvements, and functional editorial elementslike hands-on lab routines and configuration examples are givengreater emphasis.
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Additional info for Cisco Voice over IP CVoice) Authorized Self-Study Guide
Campus LAN Environment [View full size image] Components for integrated voice and data campus networks, as discussed previously in the "Packet Telephony Components" section, include the following: • IP Phone • Gateway • MCU • Application server When you are designing the campus infrastructure for voice, you must consider the following key issues: • Robust, fault-tolerant, highly available network design • Ability to power IP phones • Redundant power supply for network components • Ease of IP addressing • QoS enhancements Note Cisco Systems' internal telephone network in San Jose can be considered a campus LAN environment.
E&M Type II Type III, as demonstrated in Figure 2-15, is useful for environments where the M-lead is likely to experience electrical interference and falsely signal its attached equipment. When idle, Type III latches the M-lead via an electrical relay to the SG lead. When the PBX activates the M-lead, it first delatches the SG lead via the relay and signals normally, as in Type II. Type III is not a common implementation. Figure 2-15. E&M Type III 59 60 Type IV, shown in Figure 2-16, is a variation of Type II.
Each row of keys on the keypad is identified by a low-frequency tone; each column of keys on the keypad is identified by a high-frequency tone. The combination of both tones notifies the telephone company of the number being called, hence the term dual-tone multifrequency (DTMF). Figure 2-8 illustrates the combination of tones generated for each button on the keypad. Figure 2-8. Dual-Tone Multifrequency Informational Signaling DTMF tones are used not just for address signaling but also for informational signaling.
Cisco Voice over IP CVoice) Authorized Self-Study Guide by Kevin Wallace