Posts tagged: widely-deployed

Next-Generation PON will Support at Least 40 Gbps Downstream

By admin, July 18, 2012 8:50 pm

What the next generation of fiber-to-the-premises networks will look like is becoming clear, now that members of the Full Service Access Network (FSAN) have reached an agreement on what they’re calling NG-PON2.

The agreement is not actually a standard, but instead outlines the direction that standards efforts will take, explained FSAN Chair Martin Carroll, who is also a distinguished member of the technical staff at Verizon?(News – Alert).

As FSAN considered the next generation of FTTP, various members proposed a wide range of approaches, including some that were “more elaborate and on the bleeding edge” and some that were “more current and readily available,” Carroll said.

Members ultimately settled on what they’re calling time and wavelength division multiplexing (TWDM) because the group believes that approach will meet target bandwidth and other requirements and can be developed relatively quickly. Standards could be ratified by as early as 2013 and products could be deployable by 2015, FSAN says.

Like today’s FTTP networks based on GPON, TWDM will rely on time division multiplexing but in addition will “use multiple wavelengths to stack TDM streams,” said Carroll.

The minimum bandwidth goal for an individual NG-PON2 is 40 Gbps downstream and 10 Gbps upstream, with total bandwidth shared among multiple subscribers. Noting that the current highest-speed PON, XG-PON, operates at 10 Gbps downstream, Carroll said the minimum target bandwidth levels should be easily reachable by using four wavelengths.

He added that systems with downstream bandwidth as great as 160 Gbps could be part of the standard, but he believes the 40 Gbps system will be considerably more cost effective.

The 40 Gbps requirement was driven by the per-customer bandwidth goal of 1 Gbps and apparently envisions each PON continuing to serve about 32 customers as with typical PONs deployed today. But bandwidth will not have to be allocated equally between all of the customers served from a single PON. Carroll believes network operators are likely to give residential customers service at rates below 1 Gbps, while business customer data rates will start around 1 Gbps.

Operators envision a wide range of use cases for NG-PON2, including support for mobile backhaul and potentially as a replacement for Sonet and SDH-based data services. Because NG-PON2 will use a point-to-multipoint approach, Carroll expects it to be more cost effective than point-to-point alternatives.

I asked Carroll whether the people creating the NG-PON2 standard would consider home run wiring – an approach that is gaining in popularity because some operators believe it is more future-proof than PON. Carroll said the emphasis is on PON, but he noted that the group also wants to have some wavelengths available for using WDM technology in more of a point-to-point configuration.

“It would be a PON architecture on the fiber side, but when you look at what the signal itself does, it would be more of a point-to-point allocation of the wavelength,” he said.

FSAN initially was primarily a North American organization dominated by the former RBOCs, but over the last decade it has become a much more global organization – and that reality has driven some of the requirements for NG-PON2. Carroll noted, for example, that NG-PON2 must co-exist not only with GPON, which has been widely deployed by Verizon, but also with XG-PON. The latter requirement was driven largely by China Telecom and China Unicom?(News – Alert), Carroll said.

FSAN expects to work through the International Telecommunications Union in creating the NG-PON2 standard – another example of the global nature of the technology. online casino .


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Edited by Braden Becker

Mindspeed Unveils Latest Optical Networking Unit Burst-Mode Driver Solution

By admin, March 7, 2012 6:53 pm

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Seven Communication Service Providers Chosen for Inaugural Calix Innovation Awards

By admin, November 16, 2011 3:53 pm

Calix (News – Alert), Inc., a provider of a broad range of broadband communications access systems and software, recently named seven communications service provider customers as the winners of the inaugural Calix Innovation award. The announcement was made at the Calix User Group Conference in Las Vegas.

In a press release, Calix explained that the winners were chosen on the basis of three criteria. The awards were presented to service providers who demonstrated excellence in leveraging the Calix Unified Access portfolio to deliver new revenue generating services. In addition, the company also considered the service providers’ commitment to their local communities, and overall business transformation. Each recipient’s achievement was showcased through video case study.

Calix provided the list of the inaugural Calix Innovation Award winners.  BEK Communications received the honor for innovation in local content creation and delivery; CenturyLink won for introducing innovation in advanced entertainment services. Dickey Rural Networks (DRN) was awarded for its innovation in fiber-enabled operational efficiencies, while Palmetto Rural Telephone Cooperative (PRTC) was recognized for its innovation in network and regional transformation.

Reservation Telephone Cooperative (RTC) was recognized for innovation in advanced security services, Sebastian Corporation for innovation in broadband service delivery to remote areas and Volcano Communications received the award for bringing innovation in broadband service delivery in extreme conditions

In the press release, Calix informed that nominations for the 2012 Calix Innovation Awards will open early next year. The company invited interested vendors to visit its website to submit nominations for the 2012 contest.

“Our eighth Calix User Group Conference was another tremendous success. This event provides a clear vision of the future of the communications industry and the role that Calix access innovation plays in facilitating service provider transformation and future success. With our largest number of attendees to date and overwhelmingly positive feedback, we are looking forward to continuing to build on this tradition in 2012 and producing the highest quality event for our customers that will assist them in meeting their business objectives for years to come,” John Colvin, senior vice president of North American field sales and marketing noted in a statement.

Recently, Calix introduced the 725GE optical network terminal (ONT), an enhancement to North America’s most widely deployed family of RFOG-capable ONTs. The 725GE is built on the latest version of the RF over glass (RFOG) Society of Cable Telecommunications Engineers (SCTE) standard, and includes a second Gigabit Ethernet (GE) port, which is ideal for smart grid applications, the company informed.

Madhubanti Rudra is a contributing editor for TMCnet. To read more of her articles, please visit her columnist page.

Edited by Jennifer Russell