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IP Convergence for Enterprise Networks
The Internet, when it became a mass market phenomenon in the mid-1990s, changed the direction of the telecommunications industry. It is now the primary driving force for a new generation of integrated network solutions, called IP/Convergence.
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Acquiring VoIP Knowledge Training Needs and How to Meet Them
This document provides a perspective on requisite VoIP expertise within a Service Provider organization. In addition, Service Providers selling a Hosted IP solution into the Enterprise market will need to ensure a sufficient level of technical understanding within their customer's organizations. This document also provides insight into this level of knowledge as well as the issues Enterprises will face in acquiring this knowledge should they be considering an onsite IP PBX solution.
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RTP Control Protocol Extended Reports (RTCP XR)
This document defines the Extended Report (XR) packet type for the RTP Control Protocol (RTCP), and defines how the use of XR packets can be signaled by an application if it employs the Session Description Protocol (SDP).
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Drivers for VOIP
This brief white paper discussed the motivations for developing Voice over IP technologies, and considers the issues facing network managers when justifying the deployment of voice over IP.
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Building Voice over IP
Discusses H.323 vs. SIP, Strategies for building VoIP networks, A full-blown IP telephony solution, and A migration strategy.
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The question of return on investment (ROI) of VoIP
This article will focus on how to create a solution depending on the enterprise's situation, and there are many considerations. Initially the key aspect is to understand how much the customer is planning to change their existing architecture. Will the customer maintain legacy equipment and cabling while adding on a new VoIP service?
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Voice Over IP (VoIP) Howto
This document explains about VoIP systems. Recent happenings like Internet diffusion at low cost, new integration of dedicated voice compression processors, have changed common user requirements allowing VoIP standards to diffuse. This howto tries to define some basic lines of VoIP architecture.
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H.323 Mediated Voice over IP:Protocols, Vulnerabilities & Remediation
VoIP protocols can be classified according to their role during message transmission. H.323 and SIP are signaling protocols and thus, they are involved in call setup, teardown, and modification. RTP (real-time transport protocol) and RTCP (real-time transport control protocol) are media transport protocols, and are involved in end-to-end transport of voice and multimedia data. TRIP, SAP, SRP, OSP, et. al. comprise a group of VoIP-related support protocols. Finally, because H.323 mediated VoIP relies upon the underlying transport layer to move data, more traditional protocols that security professionals are familiar with, such as TCP/IP, DNS, DHCP, SNMP, RSVP, and TFTP, may be required.
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High Availability for Business IP Telephony Assured Voice over IP in Wide Area Networks
New service demands and convergence pressures are forcing a rapid evolution in IP telephony. As IP telephony products and services mature, the pace of integration with new and existing enterprise networks continues to increase. Voice protocols now offer a richer set of features, greater scalability, and more standardization than only a few years ago.
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