Using Wi-Fi in an innovative way in the classroom? Send us a video!

Wi-Fi in today’s classroom is as common as the chalkboard and the familiar rows of desks.  Students are eager to take advantage of new forms of learning that are more in tune with their digital upbringing. Educators are looking to new digital resources – online testing, flipped classroom learning or YouTube EDU  as a means of creating a more dynamic and engaged learning environment for their students. Wi-Fi networks are enabling schools, administrators, teachers and students to connect, communicate and learn in ways they have never done before.

ADTRAN is celebrating technology in education with a contest to see which classroom is using Wi-Fi in the most innovative way.

If you think your classroom has gone above and beyond in terms of using Wi-Fi, then it’s time to take the ADTRAN Ed Tech Challenge!  Prizes for top videos will include an iPad Mini and Apple TVs.

It’s as easy as 1-2-3 to enter:

  1. Register on the entry page.
  2. Record a short 60-90 second video demonstrating how you use Wi-Fi in your classroom then share it on Twitter and tag @ADTRAN and #EdTechChallenge. You may also share your video directly with our Facebook page.
  3. Get as many people as possible to “Like” and retweet your video including the hashtag #EdTechChallenge. We will use a combination of public voting (total number of “Likes” on Facebook and retweets on Twitter) and an ADTRAN panel of judges to determine the winners!

The contest closes December 31, so don’t wait, get your videos in today.

Jason King is the director of marketing for the Bluesocket Business Group at ADTRAN. With over 15 years’ experience in the industry, he is responsible for the overall promotion and positioning of the company’s Wi-Fi solutions. Find him on Twitter @jjking24

Permanent link to this article: http://blog.adtran.com/using-wifi-in-an-innovative-way-in-the-classroom-send-us-a-video/


LAN Switch Considerations for VoIP–– Part 1: Understanding Voice over IP

So you’ve decided to upgrade to Voice over IP (VoIP), whether that’s a shiny new IP PBX to replace your old key system or moving your phone system to a cloud-hosted VoIP or Unified Communications service provider. The next question on your mind should be: is my network ready for VoIP? Seems like a redundant question – if I have a network, VoIP should work since voice is just another application on my data network.

Wrong! Over 90% of VoIP deployments are delayed or stalled because “the network is not ready.” A sobering statistic that can put a damper on all the benefits you were expecting from your new VoIP system. But there’s hope. In this series of blogs on LAN Switch considerations for VoIP, we will go into how selecting and deploying the right network infrastructure can ensure a smooth and successful VoIP deployment.

In this first blog, we will look into the unique characteristics of VoIP, the challenges of delivering voice quality and the role played by the LAN switch in the overall user experience with VoIP.

Why is voice different from other applications on the LAN?

VoIP (whether that’s voice calls or video conferences) has three essential characteristics that distinguish it from other applications on the LAN:

  1. Real-time: Voice and video communications are real-time applications unlike other applications, such as e-mail, Web browsing, Facebook, Twitter or other social media applications. Voice is also a two-way communication with both all parties involved interacting in real-time.
  2. No Guarantee: Surprise! VoIP has no guarantees of delivery. Other applications have a method for retransmission – e-mail continues to retransmit until delivered, Web pages can be refreshed, but voice packets are not retransmitted or guaranteed to be delivered.
  3. Compared with POTS: Legacy phone communications have set expectations among users about always-on, real-time communications. Even when there’s a disaster or power goes out, the expectation is the phone will work.

What are the challenges of delivering VoIP?

Voice is an application that’s constantly contending for priority on the LAN. Let’s look at some of the things that voice encounters in the LAN:

  1. Multicast storms: Multicast traffic is a form of communications that is common in enterprises and many industries that use multimedia content delivery networks. IP multicast is used for IPTV distribution in hotels, the retail sector uses IP multicast to push in-store video advertising and even campus networks use IP multicast to deliver operating system images for multiple locations.
  2. Denial of Service (DoS): DoS is commonly associated with external DoS attacks or hacking, but DoS can happen within the LAN. Windows updates or “patch Tuesday” can cause network slowdowns. Scheduled virus scans can cause applications to behave erratically on the network, and voice as a real-time application experiences the greatest impact.
  3. Spanning Tree Network Loops: How many times have you been on a conference call or Webinar and the conference bridge suddenly drops? This happens as the spanning tree in the switch resets itself to create a new network configuration for one connection, but it impacts everyone. This may not affect your work on a PC but it’s very noticeable on the voice network.

What Role Does the Switch Play in VoIP?

The LAN switch plays two key roles with respect to VoIP:

  1. Traffic Cop: The switch essentially acts as a traffic cop, identifying and prioritizing traffic, and also providing dedicated lanes to ensure network traffic flows smoothly without interruptions.
  2. Power source: The LAN switch also provides power to endpoints, such as the IP Phones. Switches with PoE provide the necessary network power for IP phones, allowing for centralized power management and improved energy efficiency.

In summary, we’ve seen that voice is a real-time application, with no guarantees of delivery and high user expectations. Voice is constantly contending for priority on the LAN. And the switch plays a central role in the overall experience with VoIP.

That begs the question: won’t any switch work for VoIP? We’ll answer that and more in part 2 of this blog series.


To learn more on this topic, view the on-demand Webinar Top Three LAN Switch Considerations When Deploying VoIP.


Samir Kakkar is product manager for ADTRAN’s Enterprise Networks Division

Permanent link to this article: http://blog.adtran.com/lan-switch-considerations-for-voip-part-1-understanding-voice-over-iplan-switch-considerations-for-voip-part-1-understanding-voice-over-ip/


Preparing Your Network for a Gig

Make no mistake, if you offer a 1 Gigabit-per-second symmetric broadband service you had better be able to deliver the goods. Even when you consider that the average peak time usage per broadband* user today is only around 2Mbps levels, that Gigabit Broadband ‘Killer app” still exists – the broadband speed test! – which needs to be supported. Most new Fiber-to-the-Home (FTTH) networks can handle this widely used application, having the available access capacity to both support the full Gigabit per second burst satisfying the network speed test while still supporting peak time applications.

Many industry analysts are surprised to hear that most Gigabit Broadband players are using the fiber sharing GPON technology, and not point to point (P2P) Ethernet, FTTH technology. The surprise is warranted as P2P, sometimes referred to as Active Ethernet, supports a dedicated fiber and full Gigabit of bandwidth to each user while GPON supports 2.5Gbps per ‘PON’ connection shared by 16 or 32 homes/businesses to download content (and a 1.25Gbps shared pipe for uploading content).

If broadband utilization growth continues at the yearly rate we have seen for the last 10 years (~40%) it will take 10 years until a 2.5Gbps GPON port can no longer support a Gigabit speed test (>47Mbps average user bandwidth at peak times). The FTTH network could tap out in less than 5 years if an older, less developed GPON FTTH service delivery platform/network was deployed OR more heavy users like business customer using 100+ Mbps were to be served.

This lack of FTTH platform development is akin to a highway having extra traffic lanes only part way between major interchanges. This accelerated network obsolescence results from the inability to funnel any more than half of the 2.5Gbps per PON traffic into the cloud.  Many Gig service providers reduce the customer split from 32 to 16 to accommodate higher service rates, but that generally buys you only another couple of years at 40% growth rate before around 100Mbps per user ‘redlines’ the FTTH GPON platform. Next generation 10G PON technologies will be rolled out in the coming years that will extend the PON exhaustion date twice as far as today’s most robust GPON platforms. That is what 10G versus 2.5G per PON will get you – 1.5 to 2 times the life expectancy. 5 to 10 more years of growth–up until 500Mbps per user on average is consumed during peak times – before exhausting a NGPON2 10G PON interface. This would support the wide spread delivery Gigabit broadband services, and the current high growth rate out to somewhere near 2030. Indeed this continued growth likely won’t happen everywhere but is will happen in many places, especially where those heavy user enterprise customers begin subscribing to Gigabit Broadband.

Now please realize that we have only been discussing the FTTH service delivery platform sitting in the access or last mile network being impacted. A 1000 or more of these Gigabit services will be supported on a single Next Generation FTTH service delivery platform, pushing each platform to require high performance cloud-facing interfaces supporting near Terabit speeds (Tbps or 1 million Mbps) to effectively transport all the cloud-based applications from a 1000 aggregated Gigabit Broadband users.  Just like the FTTH access network, the middle-mile or metro optical networks will need to be highly scalable to support this massive onramp of broadband traffic. Imagine if we only widened a city’s side streets, but never expanded highway interchanges, overpasses, turnpikes and lane count.

Today’s FTTH platforms generally have only a 10Gbps Ethernet connection between the access network and metro network connecting to the cloud. This is just 1% of the Tbps requirement modelled. Most of today’s second mile or metro networks are receiving a ‘packet optical’ upgrade as Gigabit Broadband continues to ramp.  Packet Optical allows exponentially more traffic to be added onto a fiber link by using multiple wavelengths of light – as in dozens and dozens – as opposed to a single wavelength pair and blinks those lasers on and off at 10 or even a 100 times faster than access fiber –  as in Fiber-to-the-Home  – connected to a home or business.

*Note: I am calling a ‘broadband’ user someone with at least the average broadband speed in the U.S. which is about a 10Mbps connection. These people typically use more traffic during peak times than the average user with a smaller connection to the Internet.  Broadband users use more bandwidth online gaming, watching YouTube, viewing shows on their Roku or Apple TV and (perhaps) even illegally streaming pay-per-view boxing .

Kurt Raaflaub leads ADTRAN’s strategic solutions marketing, and has more than 20 years’ experience in telecom. He has global solutions marketing responsibility for the areas of SDN/NFV, Gigabit Broadband, and Customer Connectivity directed at the residential, enterprise and backhaul markets. Prior to his current position, Raaflaub was responsible for directing ADTRAN’s Broadband, Carrier Ethernet and Packet Optical solutions marketing activities within ADTRAN’s Carrier Networks Division. In 2006, he joined ADTRAN from Nortel where for over a decade, he held various roles focused on marketing and managing new disruptive market opportunities.

Kurt Raaflaub 273x300 Preparing Your Network for a Gig

Permanent link to this article: http://blog.adtran.com/prepare-your-network-for-more-than-a-gig/


5 Must-Have Features for Your Next Wi-Fi Solution

Wi-Fi is rapidly becoming a primary means of connectivity in nearly every commercial vertical. Enterprises are relying more on wireless connectivity to increase employee productivity, retail stores are using Wi-Fi for cutting-edge inventory management systems, and schools are utilizing wireless networks to create a high-tech classroom. As demand on existing wireless networks increases, many IT managers are considering an upgrade to their wireless network. In this article, we examine the top 5 must-haves in your next Wi-Fi solution.

Distributed Control Plane

Many Wi-Fi solutions consist of multiple access points with a centralized hardware controller. In many cases, all client traffic and management traffic is switched to a centralized controller, which executes security and quality of service policies and forwards the traffic to the wired network. As the number of users, access points, or connection speed increases, the business must upgrade the controller, as it presents a throughput bottleneck for all traffic leaving the wireless network. Newer managed Wi-Fi solutions remove the controller from the data path while still maintaining centralized management, allowing the control function to be located offsite or hosted by a third party. With current Wi-Fi speeds topping 1Gbps and multiple devices per user, it is crucial for organizations to consider a cloud/virtualized solution where the management and control function of the wireless network are independent of the data path for client traffic.

Flexible Licensing Model

Many Wi-Fi vendors now offer managed Wi-Fi solutions with cloud-based management boasting low deployment costs and state-of-the-art features. Unfortunately, many of these solutions only offer regular, recurring licensing models, which, if the license were to lapse, the Wi-Fi access points and control would no longer function and essentially be dead weight. Because many businesses and educational institutions have budgets that change from year to year, a best-in-class Wi-Fi solution will offer a flexible licensing model which frees customers from a regular, recurring payment and allows them to own the end-to-end system or outsource the hosting and support depending on their internal resources and financial needs.


Today’s laptops, tables, and phones all offer the latest in Wi-Fi connectivity and so should your next Wi-Fi solution. Studies show that most users have at least 2 Wi-Fi-enabled devices, and with more devices comes more bandwidth demand. In addition, The Internet of Things (IoT) promises to deliver more Wi-Fi-enabled, smart devices in the business, which will also increase network demand. 802.11ac Wave 1 offers actual throughput approaching 1Gbps, which can serve more users with higher speeds than previous technologies. Future Wi-Fi standards will increase throughput and efficiency even further. With demand on the wireless network at your business getting larger by the day, it is crucial that your next Wi-Fi solution be provided by a vendor that offers the latest, most reliable Wi-Fi technology.

Role-Based Access Control

Heightened security requirements such as the Payment Card Industry Data Security Standard (PCI DSS) and the need to ensure that mission-critical traffic receives adequate bandwidth necessitates the ability to control access based on the type of user. Modern Wi-Fi APs offer an integrated firewall, which provides the ability to block unwanted traffic before it enters the wired network, leaving more capacity for legitimate traffic. Before you purchase your next Wi-Fi solution, make sure your vendor is familiar with PCI compliance, offers a security feature-set that allows for granular access control, and allows you to control bandwidth consumed by your end-users.

Reporting and Analytics

The key to evaluating your company’s Wi-Fi budget is understanding how well your current network serves the demands of its end users. Further, comprehensive reporting can reduce trouble tickets and user downtime. Today’s best Wi-Fi solutions provide administrators with comprehensive, customizable reports including usage per user, number of users per AP, and more. Preparing a business case to upgrade your Wi-Fi network is much easier if you can export factual, relevant data about current and historical network demand, which is why your Wi-Fi solution needs quality reporting and analytics.

In closing, today’s users have more devices and demand more bandwidth than ever before. You next Wi-Fi solution should arm you with the latest speeds and feeds without the bottleneck or increased cost of upgrading a hardware controller.  In addition, the best Wi-Fi solutions are CFO and helpdesk friendly by providing a flexible licensing model and granular, customizable reporting and analytics. Lastly, security and quality of service are paramount as businesses and educational institutions depend more on wireless networks for mission critical functions such as accepting credit cards and accessing student records.


About the author: Chris Tucker brings over 15 years of telecommunications experience to ADTRAN and currently supports several cable MSO and CLEC customers with ADTRAN’s leading business services products. Prior to joining ADTRAN, Chris served as a solutions engineer for a major DOCSIS cable modem manufacturer where he supported product qualification efforts at many of the top ten US cable MSOs. Chris has also served in several sales engineering and technical business development assignments supporting the introduction of cutting-edge service delivery solutions into the cable, telco, and satellite service provider verticals. Chris holds a Bachelor of Science degree in Electrical and Computer Engineering Technology from Purdue University. 


Permanent link to this article: http://blog.adtran.com/5-musthave-features-for-your-next-wifi-solution/


Is FTTH fast enough for European Operators?

2015 may prove to be a decisive year for European Fibre-to-the-Home (FTTH) investments. Competition within the European telecoms market is intensifying. Consolidation within the cable providers is creating pan-European multi-service giants. Liberty Global leads the charge, with mobile players like Vodafone moving in on the action. With their infrastructures upgraded to DOCSIS 3.0 for many years now, these multi-service operators are moving to compete with more sophisticated offerings, over and above the traditional headline speed positioning of old. In the cable world it is clear the game has changed. The new weapon of choice is service bundles, with exclusive TV content being the ammunition. As more operators seek to enter the TV arena, increasing demand for content rights is applying upward pressure on the cost. This is now compounded by disruptive Over the Top (OTT) providers like Netflix, Amazon and Google. Only those service providers with true scale will be able to justify the premiums required to secure exclusive access to the most popular content.

As we reflect on the European FTTH market, we continue to see steady progress, coupled with some remarkable growth spurts in the likes of Russia, Romania and Spain. Unfortunately these bursts in activities are not reflective of activities and investments throughout Europe. Recently we witnessed the celebratory news headlines which applauded the EU28 FTTH subscriptions surpassing the 15 Million mark. While this is indeed a fine milestone, and worthy of celebration, we must temper our jubilance with the reality that this reflects a mere 7 percent of households across the EU28. Closer examination of the trajectories of many EU28 markets currently focused on FTTH, will not see them reach parity with copper connections within the next 20 to 35 years.

It is widely acknowledged by most operators that some of the largest barriers they face with FTTH deployment come from the customer base they are seeking to serve. Service rejection and scheduling delays result in substantial erosion of scale economies, drive costs upward and compound delays. Until recently, technologies which shortened copper loops to deliver higher speed broadband were not deemed by the industry to be sufficient for inclusion within a formal FTTH or FTTB classification. With the bulk of Europe’s reported Fibre connections being FTTB, where copper is used for the final service delivery, recognition of the complimentary benefits that the very latest copper technologies bring to accelerating FTTH deployments is welcomed.

G.fast will permit service providers to embark on a more traditional telecoms technology deployment where the operator is in charge of their deployment schedule, and strong geographical scale economies can be achieved, accelerating deployment times and reducing service delivery costs. Offering speeds which can compete with the strongest cable offerings permits Europe’s operators to elevate themselves above the headline speed marketing campaigns and reinvigorate their campaigns with multi-service bundles enhanced with localised content.

Ironically it seems that the antidote to Europe’s FTTH woes may prove to be a sprinkling of copper.

Ronan Kelly is ADTRAN Chief Technology Officer for the EMEA and APAC regions

Permanent link to this article: http://blog.adtran.com/is-ftth-fast-enough-for-european-operators/

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