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VoIP Architecture

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VoIP Architecture

  1. Common VoIP Architecture
    This white paper describes the architecture of AT&T?s common infrastructure for real-time communications services over Internet protocol, commonly referred to as VoIP. The infrastructure will be used to implement all planned and future real-time services that use IP as their main transport technology. Existing voice services will migrate to this architecture over time and when appropriate. AT&T is migrating to a single Multiprotocol Label Switching (MPLS)-enabled IP core network in support of a major initiative, the Concept of One, which will ensure optimum use of resources by maximizing commonality. All services will eventually be carried over this IP network. The common infrastructure described in this paper is limited to the essential capabilities and components that will enable AT&T to develop and deploy real-time services, such as voice, interactive text and video, and various multi-media collaboration services.
       
  2. VoIP architecture
    VoIP systems can be divided into three major groups that include systems that have been developed from the traditional PBX platforms, systems evolved from the traditional data-switching networks, and VoIP systems that have been developed from scratch. Each system has its own merits, cost and implementation implications and can be used to achieve 99.999% availability. The traditional PBX systems have consistently delivered 99.999% reliability that is now being used as a standard for VoIP systems. However, these legacy PBX systems operate independently of one another and cannot back each other up. Each PBX at a given site is in effect isolated from the rest of the network and is a single point of failure. It is a fragmented and centralized architecture. Data-optimized switch platforms can also be used to transmit voice; however even though the bandwidth requirement of voice is small, it has a very low tolerance of delay. To develop a VoIP platform, a call control is implemented in a centralized server which is a single point of failure.
        
  3. Aruba unveils mobile VoIP architecture
    Aruba Networks introduced its Mobile Edge architecture for securely connecting mobile workers to enterprise VoIP and data networks. It is enabled by new controlled access points and updated ArubaOS software. The AP-65 allows users to create temporary corporate hotspots at any location with an available internet-connected Ethernet port while the low-cost AP-41 lets telecommuters and executives extend the corporate WLAN to their home offices. Network managers today are faced with three major IT trends that they must address: mobility, security, and convergence. All three trends intersect at the edge of the network- the point where users connect to enterprise services. The edge of the enterprise network today, built on the past decade of networking technology, is a fixed edge. It was designed for a time when users and devices were not mobile.
       
  4. MultiPath Architecture VoIP Technology
    Quintum's Tenor VoIP solutions also eliminate the risk of complex implementation by providing the simplest, most unobtrusive installation of any VoIP product on the market. Tenor sits between the PBX and router, sending whichever types of calls they choose to your IP network. A simplified, intuitive interface makes it easy to select which calls go where ? and to modify that selection as confidence in VoIP increases. Little or no re-configuration of existing equipment is required. Since Tenor Switches work with your existing router and PBX configurations, you don't have to shoulder the risk of a major infrastructure overhaul. And you can continue fine-tuning your calling parameters to maximize your VoIP savings.
        
  5. Softswitch: Architecture for VoIP
    A key enabling technology for delivering telecom services over the Internet inexpensively, softswitches empower new service providers to compete successfully with incumbents. If we equate cheaper, simpler, smaller, and more convenient to use with disruptive technology, then softswitch qualifies.  Now this comprehensive reference to softswitch applications, protocols and platforms gives you an inside look at the software. Frank Ohrtman investigates the technology, the marketplace, and the players. Softswitch can help you:
    * See what makes softswitching tick
    * Anticipate how softswitches will affect your systems, services, and vendors
    * Learn how to get hardware-level quality, scalability, and signaling from a softswitch
    *Evaluate softswitch advantages as Class 4 and Class 5 replacements
     
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Posted on: April 18, 2011

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