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Proven Operational Benefits and Business Value of Optically Switched Networks
State-of-the-art optical networking intelligence is simplifying end-to- end service provisioning, enhancing bandwidth agility, and reducing operational costs in some of the world’s most innovative networks.
This white paper uses real-world examples from large-scale optical mesh networks to illustrate the tangible benefits – increased operational efficiencies, enhanced capacity utilization, and simplified ...
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The Optical Transport Network (OTN) promises to do for the transport of wavelengths what SONET did for transport of DS-1s and DS-3s. SONET was conceived and developed for the DS-1 and DS-3 world of the late 1980s and 1990s. Much has changed with the rise of Ethernet transport and the need to transport wavelengths of any variety.
The potential of the OTN is to create operation, administration, and monitoring (OA&M) capability for wavelengths regardless of the traffic type being carried as ...
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Desk-top VOA(Variable Optical Attenuator)
VOA-D-M (Manual Adjust) VOA-D-E (Electrical Adjust)
Manufacture and research of optical components Backlit LCD display Testing and maintenance of optical instruments High-resolution attenuation Teaching and experiment in optical communication Wide attenuation range High reliability
131=1310nm 155=1550nm 1315=1310&1550nm etc
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Secure and Reliable Utility Telecom Networks
Strengthening Underlying Telecom Infrastructure in Today’s Risk-Sensitive Environment
In the aftermath of 9/11 and other international terrorist attacks, high-profile power blackouts in the U.S. and abroad, and simulated cyber attacks on critical infrastructure (e.g., the U.S. Department of Homeland Security’s Aurora experiment and the large-scale, multinational Cyber Storm I & II exercises), the focus on utility infrastructure security and ...
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Coarse wave division multiplexing (CWDM) systems and dense wave division multiplexing (DWDM) systems provide low-cost, quick and easy to provision bandwidth to meet the needs of many users; telecom, utility, cable, and enterprise. These systems are ideal to meet rapidly increasing bandwidth demands. Both CWDM and DWDM offer significant cost savings when adding capacity to user networks as well as rapid installation advantages for meeting service demands. This paper compares the technical ...
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Muxponders offer service providers a more efficient use of wavelengths on CWDM and DWDM systems. Muxponders multiplex lower rate signals into a higher line rate. For example, a muxponder would multiplex four OC-48 client rates into an OC-192 line rate or eight GbE client rates into a 10 Gb/s line rate. This would provide a 4:1 or 8:1 efficiency gain in fiber or wavelength utilization in the examples above, respectively, allowing service providers to better utilize their fibers or wavelengths on ...
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Circuit emulation technology enables TDM traffic to be transported transparently over modern packet switched networks (PSN), including Ethernet, IP, MPLS and PBT.
Circuit Emulation Services over Packet-Switched Network offers a different approach to transport TDM traffic over IP, Ethernet or MPLS networks. One main benefit of the technology is its ability to transport many TDM trunks from one location to another over a packet network. Before implementing this bridging technology between ...
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Fiber-to-the Premise (FTTP) deployments are finally taking off. Fueled by multi-billion dollar initiatives in the US and Asia, we see a lot of excitement worldwide with new deployment announcements appearing almost daily.
Fiber optics is often seen as the ultimate future-proof transport alternative because of its extended life expectancy and its capability of transporting virtually unlimited bandwidth. Add to this today's availability of hardened components and connectors, which have ...
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Alloptic recently introduced the MicroNode™ product line, which is a portfolio of optical transceivers that enable the evolution of HFC networks into FTTH topologies. Service providers are rapidly deploying MicroNode technology to enable return path services, expand bandwidth, and replace aging HFC networks.
One network operator recently began upgrading their HFC system using the MicroNode products. A key factor in their decision to use the Alloptic solution was the economic advantages. ...
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The need for Telcos to deliver the triple play of voice, video and data in order to compete with services offered by cable companies has reignited the focus on broadband optical access systems based on Passive Optical Networking (PON). PON components are key to unlocking the bandwidth of fiber. This paper specifically addresses GPON (Gigabit PON) applications and the associated synchronization requirements for the smooth transmission of real-time services over broadband networks.
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Are you Confident that Your Optical Fiber Infrastructure Can Support High Data Rate Applications?
White Paper: Are you Confident that Your Optical Fiber Infrastructure Can Support High Data Rate Applications?
In 2009, TIA 492-AAAD was finalized, making OM4 laser-optimized fiber a standards recognized solution that offered a new high bandwidth multimode fiber option to the industry. Following close behind, new high data rate 40 and 100 Gigabit Ethernet technologies were standardized in June ...
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With an explosion for high capacity packet based services, driven by residential usage such as video streaming, voice over IP and gaming, coupled with business requirements for flexible VPN’s and high capacity backhaul services. A converged packet / WDM network enables the seamless delivery and huge scalability required to support the growing bandwidth demands of the future network.
A converged packet optical transport network based on Intelligent WDM (iWDM™) enables network operators to ...
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Abstract: We study via simulation the influence of the DPSK decoder free spectral range (FSR) when strong optical filtering is considered for the NRZ and RZ modulation formats and show that larger FSR can improve performance. ©2007 Optical Society of America OCIS codes: (060.2330) Fiber Optics Communications; (060.5060) Phase Modulation
1. Introduction The differential phase-shift keying (DPSK) modulation format has attracted considerable attention in recent years due to its superior OSNR ...
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The demand for Carrier Ethernet is growing quickly with a CAGR in the range of 50% as operators make the shift from legacy services to Carrier Ethernet services as part of their transition to converged multi-service-networks. Infonetics Research Inc. has estimated the worldwide market for Carrier Ethernet services to grow from $2.5 billion to more than $22 billion in 2009.
Carrier Ethernet does indeed represent a big opportunity; how- ever, there are two challenges for Service Providers to ...
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Go Native with Native Packet-Optical transport
The key to building efficient Optical Metro Networks for the future
Introduction: Scaling to meet the Ethernet Convergence Wave
Demand for network capacity has ramped up dramatically thanks to the popularity among both fixed and mobile subscribers of video content, music downloads, multimedia-rich web sites, and new applications, as well as thanks to the increasing adoption of Ethernet business services from enterprises. Fixed operators are ...
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Fiber optic cable is one of the fastest-growing transmission mediums for both new cabling installations and upgrades, including backbone, horizontal, and even desktop applications. It works very well in applications that need high bandwidth, long distances, and complete immunity to electrical interference. That makes it ideal for high-data-rate systems such as Gigabit Ethernet, multimedia, and Fibre Channel, or any other network that requires the transfer of large, bandwidth-consuming data ...
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The surging demand for consumer-driven high bandwidth applications for the residential market, such as HDTV, 3-D TV, video on demand, IPTV, gaming etc., has led to a large scale global investment and deployment of fiber to the home (FTTH) networks. Almost exclusively, these networks run over single-mode optical fiber cabling. The bandwidth potential and distance capabilities of single-mode fiber give the service providers much greater cost savings and flexibility to deploy these newer high ...
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Introduction Solar energy has recently become a popular alternative energy source to meet demands around the world due to the fluctuation of oil/coal prices and global warming issues. Oil is a limited and diminishing resource, and because of this, the price surges when demand is high. Oil and/or coal powered generators, when converting fossil fuel into electrical power, produce enormous CO2 and other pollutants that are harmful to the earth. In a solar farm power generation system, large ...
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The enormous increase in cellular telephone usage has created demand, additional network capacity and bandwidth. Cellular network capacity growth is driven by new cell phone functions and services such as cameras, personal organizers, web browsing, e-mail and text messaging.
Base station transceivers with greater bandwidth are in demand. Fiber optic links give cost eective, high bandwidth new capacity with more exibility than copper links. Fiber links make system modications and future ...
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Industrial Fiber Optic Products forWindTurbine andWind Farm Applications
Introduction Global warming and climate changes from CO2 emissions of traditional energy sources, such as those powered by fossil fuels, have created huge markets for alternative power generation. Wind turbine energy has become a popular alternative to meet the fast growing energy demand. Unlike fossil fuels, which are a limited and di- minishing resource, wind energy is limitless and readily available. Conversion of wind ...
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We describe an optically-pumped cesium beam frequency standard under development for deployment on the GPS-III satellite constellation. In particular, we discuss the design choices that have been made with particular emphasis on optical pumping and interrogation techniques, laser and optical technologies, and the realization of the prototype frequency standard. Preliminary performance data is presented.
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The MPO Connector, MPO Pins, Keys and Polarity 3
SYSTIMAX® InstaPATCH® 360 Product Descriptions 5
SYSTIMAX InstaPATCH® 360 Typical MPO Connectivity Configurations 6
SYSTIMAX InstaPATCH® 360 Warranty and Supported Applications 10
SYSTIMAX InstaPATCH® 360 Configuration, Installation and Administration 11
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Enhanced Survivability for Voice/Data Traffic
Disaster Recovery Mandates Utility operators face increasing pressure to ensure the reliability of critical communications infrastructure and protect the energy distribution network from service affecting damage. This includes greater scrutiny of the industry by the US Congress and national media, and a renewed emphasis on critical infrastructure protection by NERC/FERC and other regulatory bodies.
As redundancy and disaster recovery mandates ...
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The relentless pressure to reduce costs, increase network performance, improve productivity, and meet regulatory requirements and business continuity needs are a constant battle for the information technology and telecommunications groups of any organizations. Technologies have emerged to help solve these requirements but in many cases they have proven to be inefficient, difficult, unsecured or expensive.
With the Layer-2 link balancing technologies that have entered the market place in the ...
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Base stations that can connect devices at up to 50 Mbit/s or more will be operational within the next few years. For the backhaul network, the extra capacity needed and the mix of services will require changes in the technology used IP/Ethernet will become the transport technology of choice.
This white paper introduces the technologies for next generation backhaul networks, and the connection and management solutions provided by Eclipse™ Packet Node wireless platforms from Aviat Networks.
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Base stations that can connect devices at up to 50 Mbit/s or more will be operational within the next few years. For the backhaul network, the extra capacity needed and the mix of services will require changes in the technology used IP/Ethernet will become the transport technology of choice.
This white paper introduces the technologies for next generation backhaul networks and the connection and management solutions provided by Eclipse Packet Node wireless platforms from Aviat Networks.
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This paper presents a network solution for radically improved efficiency and manageability of existing network infrastructures while solving the QoS bottleneck for handling mission-critical IP data and video. Customers benefit from reduced cost in both CAPEX and OPEX through higher network utilization and superior manageability. This is obtained by combining the best in cost-efficient Ethernet data access and the latest advances in optical transport technologies. There is currently a strong ...
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A major challenge the cable industry is facing today is the need to evolve existing networks into a centralized IP video delivery system where video is video, regardless of its destination. This paper will discuss several challenges and considerations in this evolution:
• Choosing the correct platform • Finding the bandwidth on the HFC network • Taking advantage of universal video edge QAM (EQAM) technology to alleviate bandwidth bottlenecks • Changing the in-home equipment strategy to lower ...
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Police, fire and rescue, and emergency medical services face a growing array of threats to public safety.Traditional disaster threats like extreme weather (e.g., hurricanes, blizzards), natural disasters (e.g., earthquakes, epidemics), and manmade disasters (e.g., transportation mishaps, hazardous material spills) have been joined by new threats (e.g., terrorist attacks). Street-level, white-collar, and organized crime continue to present new challenges to police departments. Meanwhile, local ...
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III. TOP OF RACK EXAMPLES AND CONSIDERATIONS 5
White Paper: Top of Rack: An Analysis of a Cabling Architecture in the Data Center
Cabling architectures lay the infrastructure foundation for data center networks. Sometimes overlooked, physical layer connectivity is a necessity that requires careful planning and consideration when choosing a cabling architecture. There are several types of cabling architectures found in the data center; direct-connect, zone-distribution, and top-of-rack (ToR). ...
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Powerful firewall technology and virus scans get all the attention, but they won’t do you any good if anyone off the street can stroll through the front door and leave with the contents of your network in his or her pocket.
This white paper shows why physical security is important and explores ways to keep unauthorized personnel from accessing your network through methods such as locks, fiber cable, and security cameras. It also explores ways to protect your network from accidental damage ...
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Your company, like many others, has a sizable investment in computer networks: hardware, software, and customer-related information. You also have a significant investment in the people and processes that support the mission-critical applications you depend on daily to run your business. But one electrical anomaly, one good zap to your network, can sideline this entire segment of your company's operation. Computer networks are electrical systems. Network devices rely on steady, even power, as ...
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The market for Ethernet gear continues to be one of the largest revenue opportunities for telecommunications September, 2009 equipment manufactures globally, with carrier Ethernet alone surging to over $140B. With the evolution “Over the 5 years from 2009 to 2013, we expect service providers of cloud computing, and the rise in popularity of worldwide to spend a cumulative $ 146 billion on Carrier Ethernet applications such as Facebook, Flickr, YouTube, the equipment” amount of data stored in ...
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How do you secure your network from increasing Internet threats and still ensure the performance needed by on-demand applications, remote resources, and on-line content usage?
Network administrators must implement a broader set of security features and simultaneously improve application performance to the meet the needs of their organizations. This introduces major challenges. Additionally, treating Internet security and performance as opposing functions eliminates any hope of diagnosing ...
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Triple-Play FTTH E-Ring - Gigabit Ethernet Ring Passive Optical Networks using ReadyLinks Optical Service Gateways
This paper describes how Fiber to the Home Service Providers can implement Ethernet Ring Passive Optical Net- works utilizing ReadyLinks’ RHINO™ Gigabit Ethernet FTTH Optical Service Gateways to serve both residential and business users. The pros and cons of Ethernet Ring PON FTTH vs. splitter-based GPON FTTH will be detailed. The advantages of using Gigabit Ethernet Switches and ...
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Abstract: We describe long-term field measurements at 43Gb/s over a high-PMD link, using one receiver with adaptive PMD compensation and a second receiver without. The Q at both receivers is monitored and correlated with instantaneous DGD.
Polarization Mode Dispersion (PMD) has been identified as a system degrading effect on some older installed fiber [1,2,3]. As the PMD-limited reach is proportional to 1/(bit rate)2, this becomes an increasingly severe problem with higher data rates.
Both ...
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Wavecrest Computing 2006 Vernon Place Melbourne, FL 32901 Toll-free: 877-442-9346 Voice: 321-953-5351 Fax: 321-953-5350
Social networking in the workplace is a major dilemma for today's businesses. The question is: “Does it help or hurt the organization?” After reviewing key aspects of the issue, the author – an analyst with Wavecrest Computing – offers some thoughts on solutions.
At Wavecrest Computing, we've been helping businesses and other organizations deal with Internet usage issues for ...
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The legacy network landscape is eroding as more service providers migrate to an IP-based infrastructure. By 2012, some experts believe that IP-voice minutes will exceed traditional, TDM-based voice minutes in the world’s communications networks. Driving this IP migration are two powerful forces: a dramatic shift in consumer behavior toward a multi-device/multimedia lifestyle and the need to reduce operating costs in an increasingly competitive marketplace.
The proliferation of iPhones™ and ...
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Strategies for a Successful Subscriber Migration to a Next-Generation Architecture
By Maya Henderson Program Manager, MetaSwitch Carrier Systems Division
TABLE OF CONTENTS Executive Summary................................. ........................................ ........................................ ................ 4 About the Author.................................. ........................................ ........................................ .................... 5 ...
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VLANs limit the broadcast domain, ensuring that subscribers cannot see each other’s information and also reducing network traffic. They are a fundamental part of how broadband access networks deliver information to subscribers. There are two ways that VLANs are used in this role. A service VLAN (S-VLAN) delivers a single service to all subscribers, while a customer VLAN (C-VLAN) delivers multiple services to a single subscriber. These are often combined by using a single S-VLAN to carry ...
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Introduction Fiber optic networking has traditionally required two strands of fiber to accomplish full duplex communications. To achieve full duplex transmission (meaning that transmitting and receiving signals can occur simultaneously) one strand is reserved for transmitting, the other for receiving.
Single strand fiber solutions are the simplest way to fiber optimization, immediately doubling the capacity of the installed fiber plant. Instead of using two dedicated strands, one for receiving ...
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Technological advances, such as virtualization and multicore servers, open the way to a new generation of more efficient, higher performance data centers. The new developments can bring important benefits, but they also challenge organizations to
make critical infrastructure decisions that will impact the future of their IT systems and ability to stay competitive. Among the most important of these decisions is how to implement 10 Gigabit networking in the data center.
Virtualization has ...
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As digital broadband technologies continue to evolve, the market for delivery of standard definition and high definition digital television programming to the residential subscriber is becoming increasingly competitive. Depending on their geographical location, a digital TV customer might be able to choose among a number of service providers, including cable companies, telecom companies with DSL or Passive Optical Networks, satellite companies, and companies delivering services over wireless ...
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Most laptops, smartphones, and PDAs now have full networking capabilities. These small, portable network devices make every data port or wireless access point on your premises a potential gateway into your network. The solution to this security threat is network access control (NAC), which keeps untrusted devices from connecting to your network while allowing approved devices on.
This white paper explains the basics of NAC and simplifies the many confusing NAC options available in the ...
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TELLABS’ ETHERNET- OVER-SDH SOLUTION IS A COST-EFFECTIVE WAY OF TURNING AN SDH TRANS- PORT NETWORK FOR VOICE ONLY INTO A FULLY INTEGRATED VOICE AND DATA NETWORK
T his paper describes Private Line Interconnect and Internet Access services built on well known, easy to use and cost-
efficient Ethernet technology carried by latest generation SDH equip-
ment, thus leveraging on the large installed base of SDH networks.
Enterprise LAN bandwidth has exploded over the last couple of decades. In ...
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The IEEE 802.3ba amendment that will add 40 Gb/s and 100 Gb/s rates to the Ethernet standard is nearing completion, scheduled for publication in mid 2010. The draft currently specifies supportable distances of 100 meters on OM3 fiber and 150 meters on OM4 fiber for both rates. The common distances for both rates are the result of using inverse multiplexing over parallel fibers, wherein the signals are transmitted over multiple lanes, each operating at 10 Gb/s. The 40 Gb/s interface employs four ...
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Providing fast and accurate data in clinical trials
Customer: Health Decisions, a Clinical Research Organization (CRO).
Challenge: Speeding up the delivery of data from clinical trials and improving data accuracy.
Solution: A solution using Mi-Forms from Mi-Co, based on Anoto digital pen and paper technology.The solution includes a Mi-Forms Client, Mi-Forms Designer and Logitech digital pens.
Benefits: Faster incorporation of data, greater data accuracy, ease of use and the possibility to ...
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ABSTRACT A key challenge set by carriers for 40Gb/s deployments was that the 40Gb/s wavelengths should be deployable over existing 10Gb/s DWDM systems, using 10Gb/s link engineering design rules. Typical 10Gb/s link engineering rules are:
1. Polarization Mode Dispersion (PMD) tolerance of 10ps (mean); 2. Chromatic Dispersion (CD) tolerance of ±700ps/nm; 3. Operation at 50GHz channel spacing, including transit through multiple cascaded [R]OADMs; 4. Optical reach up to 2,000km.
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The world is currently experiencing a dramatic escalation in the demands placed upon its global data communica- tions infrastructure. The increase is driven predominately by a shift from text only trac with modest bandwidth requirements to full multimedia content with bandwidth requirements orders of magnitude more. To accommo- date the ever increasing demand for bandwidth, commu- nication links have evolved from copper based channels running in the MB/s range to ber optic based links running ...
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Delivering Interactive Communication Across IP Networks
For decades, the experts have been telling us that content is king. Whoever controls The King is dead content, they say, will profit the most from network services. And video-on-demand will Interactive be the ultimate Internet moneymaker. communication rules ... again and again But history disagrees. Interactive communication has always made more money than and again. content distribution. In the nineteenth century, before telephones and ...
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Whether a result of tele-working initiatives, contingencies for events such as 9/11, SARS, and the East Coast Blackout, or just addressing the need to balance longer work days with family commitments, companies are being driven to provide expanded access to corporate IT resources from outside the internal network. However, addressing this requirement can be problematic.
One problem is that the modern enterprise network is a dynamic environment. Corporations have an ever- changing variety of ...
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Solar power and WiMAX are similar in that they both provide a service which would not otherwise be possible due to lack of cabled infrastructure. Combining both of these technologies together allows for the deployment of broadband networks in areas with little or no access to electricity. In this document, we will discuss the benefits, applications and power requirements of providing solar power to Vecima Networks' VistaMAX base stations.
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From most of its 70-year history, video has been delivered using analog technology. Analog video is simple and reliable, and drove the widespread adoption of television as a mass medium. But as the medium grew, its inherent limitations—bandwidth inefficiency, transport quality and video processing equipment expense—drove the migration to digital video. Digital video was first introduced commercially in 1986. The predominant delivery technology today, digital video has a number of benefits. The ...
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III. USE CASES 4 DESIGN 4 HORIZONTAL DISTRIBUTION AREA (HDA) 5 CABLE PATHWAY 6 EQUIPMENT DISTRIBUTION AREA (EDA) 8
IV. APPLICATIONS 9 SERVER VIRTUALIZATION AND CLOUD COMPUTING 9 HIGH PERFORMANCE COMPUTING (HPC) 9
White Paper: Direct Connect: A Cabling Architecture for Small and Medium Data Centers
Business pressures and Data Center constraints have driven the Data Center to transform from a traditional, rigid structure to an efficient, flexible environment. Organizations are now equipped to ...
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Extending high-quality health care services to rural areas can be both very expensive and very difficult. The limited number of people requiring health care services in rural areas does not make it economically feasible to invest in health care infrastructure. In addition to economic considerations, the recruitment of specialists and doctors to work in rural areas is extremely difficult especially with the current shortage of medical professionals.
Telemedicine is basically the practice of ...
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70/80 GHz e-band products are being touted by many global mobile operators as an
integral component in cellular backhaul networks. With the drive towards 4G technologies
such as WiMAX and LTE supporting ever higher data rate multi-media applications such as
mobile broadband internet, carriers are seeing tremendous cost and bandwidth constraints
with their current backhaul solutions. E-band wireless is a mobile backhaul technology that
offers scalable and flexible wireless backhaul at costs ...
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As spam continues to evolve, Barracuda Networks remains committed to providing the highest level of protection against the latest spam trends. When image spam first began its assault on email users in early 2006, Barracuda Networks was one of the first anti-spam vendors to provide Optical Character Recognition (OCR) capabilities to defend against this threat. Throughout the growth of image spam volume, Barracuda Spam & Virus Firewall’s OCR techniques enabled it to maintain its target 95 percent ...
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Malicious software or “malware” is the biggest network security threat facing organizations today. Cybercriminals target enterprises that hold a great deal of money or conduct a high volume of transactions on a daily basis. A network intrusion can cost an organization as much as $5 million.
This threat of malware is very real. Private information is at risk without the proper network security measures. Unfortunately, a majority of anti-virus programs and network firewalls cannot protect ...
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This PMC-Sierra white paper provides an architectural overview of storage technology, SAN switches and Storage Elements. The systems discussed are partitioned into the functional building blocks needed to address individual functional requirements of the systems. Finally the paper explores the technology trends in the SAN industry and their evolution with the changing trend in IC technology and SAN protocols.
Heng Liao is a Technical Advisor in the Product Research Group and oversees ICs for ...
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Besides being technically savvy, today’s network professionals must be aware of the business factors sur- rounding their department’s activities and responsibilities. This means two things – becoming aware of the way in which the networking team supports the business directly, and understanding how to characterize your infrastructure equipment and management technology investments in terms of business value. Commonly, that means building a business case for any technology investment. This ...
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P-OTS A More Flexible Approach to Network Transition White Paper December, 2008
© Copyright by ECI Telecom, 2008. All rights reserved worldwide.
The information contained in the documentation and/or disk is proprietary and is subject to all relevant copyright, patent, and other laws protecting intellectual property, as well as any specific agreement protecting ECI Telecom's rights in the aforesaid information. Neither this document nor the information contained in the documentation and/or ...
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In general, legacy solutions provide basic connectivity in a reliable fashion, but are costly and difficult to manage as the enterprise attempts to force fit them into the IP-centric world. With the emergence of IP networking and related security needs, native IP solutions have become the focal point. As a result, the industry has introduced IP VPNs as a solution.
An IP VPN establishes a base network, including physical access to each site, secure transport over a wide area network, and IP ...
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Broadband has become part of our everyday lives. Searching for information, sending emails, buying goods, and downloading videos can all be done with a few clicks. New applications, however, promise to even further revolutionize how we use the network, while at the same time providing new revenue opportunities for the service providers looking to support this growth and fund broadband expansion. Examples include: • Premium (“over-the-top”) services: Access to off-net applications—ranging from ...
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Structured cable systems have very thorough standards for fiber optic and twisted pair installations. The cabling components and installed systems have test requirements spelled out clearly so that end users have assurance that the installation meets industry requirements. Test tools are readily available and user friendly. Unfortunately, for coaxial installations the standards are not as comprehensive, particularly for field- testing. TIA/EIA 570 "Residential Cabling" specifies that RG6 type ...
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Beyond Five Nines: The New Age of “Uber Reliability”
With the advent of the age of “uber reliability,” best-effort services are passé. Even the long-vaunted “five nines” gold standard of reliability may no longer be good enough for some end users and applications.
Executive Summary The benchmark for telecom reliability is 99.999% (“five nines”), which is equal to about five-and-a-half minutes of downtime per year. The five-nines benchmark is a common way to quantify “carrier class” — one of ...
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IEEE 1588 (also known as Precision Time Protocol or PTP) is specifically designed to provide precise timing and synchronization over packet-based Ethernet infrastructures. With the advent of IEEE 1588-2008 (version 2), PTP has now been adapted to meet the more sophisticated synchronization requirements of telecommunications applications. IEEE 1588-2008 captures those requirements by providing a set of added capabilities and protocol extensions that allow service providers to fine tune their ...
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Minimizing carbon intensity in telecom networks using TCO techniques
Climate change is one of the most compelling global challenges of our time. Compared to other sectors such as travel and transport, buildings and energy production, the ICT sector is relatively energy-lean, responsible for about 2 percent of global energy use and subsequent carbon emissions (with telecom representing just 0.6 percent). While telecom is relatively energy-lean, telecom networks are still energy-driven and ...
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Drivers for Deep Fiber Access Solutions William R. Kautz William A. Walker Staff Marketing Manager Staff Engineer
A deep fiber access solution is the best way to deploy
the triple play of video, data and voice.
Abstract This paper outlines the various drivers and factors behind the push for higher bandwidth access and offers general guidance in choosing the right FTTx solution. End-user demand for higher bandwidth services, an easing regulatory environment and increased competition are ...
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The most widely held belief regarding data-centric mobile environments is that a packet-based aggregation network is the optimal transport solution for the long term. However, the migration plan from an existing multitechnology infrastructure to an all-IP utopia varies from operator to operator. Even within a single cellular network, individual sites may have different requirements and different preferred migration paths based on the existing infrastructure for BTS/Node B connectivity, the ...
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OPTIMIZING ACCESS NETWORKS WITH ADAPTIVE OPTIMIZATION
INTRODUCING ECLIPSE™ ADAPTIVE OPTIMIZATION™
Aviat introduces Adaptive Optimization™ (AO) - a key feature of the Eclipse Packet Node solution, the `any-G' transport solution providing high-speed native IP microwave transport for mobile network migration to support the anticipated demands of future 4G broadband networks.
AO makes Adaptive Modulation carrier class by solving the issue whereby adverse path conditions periodically constrict ...
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Learn more about the importance of efficiently and accurately testing, measuring and analyzing PTP data to assure IEEE 1588 network readiness. This paper focuses on emerging new solutions for measuring packet synchronization and the requirements needed to ensure a consistent, predictable, measurable level of PTP network quality.
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This white paper will describe how the many useful LTE tools and studies that are available in SignalPro can be used by the RF engineer to design a well performing LTE network. EDX® SignalPro® is the combination of EDX’s comprehensive line of wireless network engineering tools. It offers all of the study types you need to design a basic wireless network, including area studies, link/point-to-point studies and route studies. EDX SignalPro also incorporates the finest telecom-specific mapping ...
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One of the key questions operators must address prior to setting up a Mobile WiMAX™ network is whether to
deploy a centralized or distributed network architecture. While a centralized topology is far more prevalent than
its counterpart, the distributed approach is an up-and-coming alternative deserving serious consideration.
As a world leader in WiMAX™, Alvarion works closely with operators to help them fully understand their
network topology and determine the architecture most suitable to ...
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Over the past couple of decades, along with an increase in the speed of data communications networks, there has been an increase in the expectation of availability of those networks.
Service providers have been selling data services to their subscribers with guarantees of performance with several dimensions (Service Level Agreements) including availability. Increasingly, the nominal availability has been set at “five 9’s” or 99.999%. This translates into downtime of 5¼ minutes per year
(or ...
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This paper focuses on wireless mesh infrastructure systems used for creating large Wi-Fi access networks, and examines three different approaches currently available for implementing them. It examines the strengths and weaknesses of each approach with a particular focus on the capacity that is available to users. Can wireless mesh infrastructure systems deliver enough capacity to support broadband services for a large number of users?
Mesh is a type of network architecture. Originally, ...
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Today's society is becoming increasingly dependent on GPS timing for many critical everyday services, such as digital TV and radio distribution systems and mobile networks. The problem is that it is very easy to jam the reception of the Coordinated Universal Time (UTC) signal via the GPS. The GPS is also military controlled, which could be a concern to some countries.
This paper describes a new solution for delivery of UTC time which is independent of the GPS. The solution enables distribution ...
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The introduction of the WaveRider Dynamic Polling MAC establishes new standards in the performance of Fixed Wireless Access (FWA) systems operating in the license-exempt bands. This product upgrade provides significant improvements in the operation and performance of the WaveRider LMS8000 NLOS system by Vecima Networks, resulting in an improved business case for the operator and an enhanced end-user experience.
The Challenges of Outdoor Wireless Networks
Vecima Networks has always ...
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The Internet was never designed to deliver the level of performance that most businesses have come to expect from their own private networks. External problems can be assigned to the limitations of the de facto standard routing protocol used between backbones, Border Gateway Protocol (BGP), which has no mechanism to account for performance when deciding how traffic is moved among providers. Additionally, there are fundamental scaling flaws in the design of the Internet that can often cause ...
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Municipalities around the world are demanding metro-wide wireless networks providing ubiquitous broadband coverage to enable public safety applications. This network allows applications to be moved from the office to the field. The police department, fire department, paramedical assistance and other agencies would have the ability to access central databases, share files from the field and use advanced applications (such as face recognition, fingerprints, video and voice over IP) from anywhere ...
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The factors that determine the behaviors of a wireless network are numerous and complicated. In addition to static factors such as the location and operating characteristics of base station equipment, terrain, clutter and building distribution, the system is also sensitive to time‐dependent factors including the locations and behavior of large numbers of both mobile and fixed remote users. There are various techniques one might adopt to predict the behavior of these users.
This paper looks ...
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The market for public-access Wi-Fi networks is poised for rapid growth, and telecommunication carriers, including telephone companies, cable operators, wireless carriers, and DSL providers, are well positioned to profit from this expanding market. Indeed, as the range of Wi-Fi-enabled devices broadens, so does the demand for Internet access anywhere, anytime. Not long ago, early adopters had to purchase and install their own wireless cards into their laptop computers; whereas today, Wi-Fi ...
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IPv6 is the next-generation Internet Protocol designed by the Internet Engineering Task Force (IETF) to replace the current IP Version 4 (IPv4) protocol used predominately on the global Internet today. IPv6 is necessitated by the inherent limitations of the current IPv4 protocol, as well as numerous economic, geopolitical, and technological requirements. Although introduced in the early 1990s, IPv6 has not been significantly deployed for general use on the Internet to date. More recently, ...
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© 2010 Extreme Networks, Inc. All rights reserved. 40 and 100 Gigabit Ethernet Overview—2
As server technology evolves, the number of servers per rack is increasing. Blade servers are an example of this, where a server chassis containing 8 or more servers is capable of pushing out over 10 Gbps of traffic to the network. To add to this, advances in virtualization are increasing the density of virtual servers per physical server creating yet more traffic on the wire. As a result network managers ...
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1Net defines ECI’s total focus on facilitating our customers' optimal transition to Next-Generation Networks, through the unique combination of innovative and multi-functional network equipment, fully integrated solutions and all-around services
www.ecitele.com ECI Headquarters Tel: +972 3926 6555 Fax: +972 3928 7100
EMEA Tel: +44 1256 388000 Fax: +44 1256 388143
RoAPAC Tel: +65 6505 1960 Fax: +65 6505 1999
CIS Tel: +972 3926 8548 Fax: +972 3926 6452
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Wireless LAN Virtualization: Twice the Network at Half the Cost
The Drive towards the All Wireless Enterprise
Creating networks that can run business-critical applications is one of the core focuses of the enterprise IT department. This has traditionally meant wired Ethernet, with wireless often seen as an afterthought for convenience rather than the network of choice. But as aging wired infrastructure approaches its next expensive refresh cycle and users demand mobility IT departments are ...
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Mobile data traffic is soaring. Examples show mobile opera- tors experiencing huge increases – up to nine-fold in only three months*. The reason? Today’s highly connected users around the globe are hungry for ever greater flows of mobile media. Presently, the number of mobile broadband users has already passed the number of fixed broadband users and is expected to pass 1 billion in just a few years. With the introduction of even higher data rates through technologies such as HSPA+, WIMAX and ...
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The Home Subscriber Server (HSS), as defined by the Third Generation Partnership Project (3GPP), is a central database of subscriber information, including the subscribers’ service profile and their current status in the network. Centralization of subscriber information is a key principle of the IP Multimedia Subsystem (IMS) architecture and provides significant administrative benefits. The HSS offered by Sonus - the HSXTM - is designed to address the requirements of the IMS domain.
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