Resources and Educational Materials

Certification Programs

Since its inception, the Forum has had an objective to establish interoperability in the broadband marketplace. Today the program encompasses end-to-end broadband testing requirements including fiber, DSL, MPLS and home networking related interoperability and conformance testing. The BBF program includes:

  • Developing common test requirements
  • Establishing a test suite which normally includes functional as well as performance tests, and finally
  • Hosting test events also known as “Plugfests”, which can include private attendee only multivendor Plugfests, conformance testing, public interoperability demonstrations and/or certification.

Certification Program Impact

  • Creates confidence and minimizes risks
  • Creates a trusted industry standard for implementation and high customer satisfaction
  • Leverages vast experience and expertise
  • Avoids extensive provider testing before purchase (even if skills were available to create tests)
  • Significantly reduces costs and accelerates time to revenue for all stakeholders
  • Interop certification critical for developing choice of silicon and products and the starting point for provider integration

NG-PON2 characteristics:

  • NGPON2 (TWDM) expansible from 40Gbps: 4 wavelengths @ 10Gbps per wavelength today moving to 8x80Gbps in future
  • Bonding capable: Multiple wavelengths may be channel-bonded to provide > 10Gbps services with standards work in progress
  • Symmetrical and asymmetrical bit rates to fit any service – Supports 10Gbps down per wavelength and 10Gbps up or 2.5Gbps up per wavelength
  • Tunable: ONU’s utilize tunable optical to dynamically tune to provisioned wavelength(s)
  • Coexistence: wavelength mux to combine NG-PON2 wavelengths to signle fiber, and co-existence elemtn to combine other technologies to single fiber with NG-PON2
  • Point-to-point WDM capabilities on the same infrastructure (4-8 wavelengths)

NG-PON2 Impact for the Industry & Subscribers

  • Converge all services for business, consumer, wireless-wireline on a single fiber network
  • Pay as you grow architecture: add lambdas as required
  • 10Gbps + service capabilities to any subscriber
  • Lower OpEx with use of tunable optics
  • Lower Latency than single wavelength systems
  • Bandwidth rebalancing by reassigning users to different wavelengths
  • Allows providers to deliver dynamic bandwidth to any subscriber at any time
  • Greater inherent reliability and availability with autonomous ONT re-tuning
  • Operational protection: move customers to another wavelength while fixing/resetting the card
  • Green: ability to turn off unnecessary CO PON cards at low traffic levels by reassigning wavelengths
  • NG-PON2 (TWDM) can co-exist with point-to-point NG-PON2, XG-PON1, XGS-PON, GPON, EPON, 10G EPON, RF Video

NG-PON2 technical information

ONU optics

ONT OptionTransmit Power RangeReceive Sensitivity
Type A – 10G/10G4dBm to 9dBm-7dBm to -28dBm
Type A – 10G/2.5G4dBm to 9dBm-7dBm to -28dBm
Type B – 10G/10G2dBm to 7dBm-7dBm to -28dBm
Type B – 10G/2.5G0dBm to 5dBm-7dBm to -28dBm

ODN Classes

ODN ClassMax AttenuationMin AttenuationDifferential ODN Loss


ChannelWavelength DownstreamWavelength Upstream

Typical Applications

ClassOptic Tuning TimeApplication
Class 1<10usNot Used
Class 210us to 25msEnterprise Svcs
Class 325ms to 1secResidential/SoHo

NG-PON2 standards

  • ITU-T G.989: 40 Gbps Capable Passive Optical Networks: Definitions, abbreviations and Acronyms
  • ITU-T G989.1: 40 Gbps Capable Passive Optical Networks: General requirements
  • ITU-T G.989.2: 40 Gbps Capable Passive Optical Networks: Physical media dependent (PMD) layer specification
  • ITU-T G.989.3: 40 Gbps Capable Passive Optical Networks: Transmission convergence layer specification
  • ITU-T G.998 ONU management and control interface (OMCI) specification

BBF projects related to NG-PON2

  • BBF-247 PON Conformance Certification (BBF member program)
  • TR-252 Multi wave-length PON Inter-Channel-Termination Protocol (ICTP) Specification (published) with amendments for NG-PON2
  • TR-331 Architecture & Technical Requirements for PON-based Mobile Backhaul networks
  • TR-385 YANG data models for ITU-T Passive Optical Networks
  • WT-414 Interoperability Test Plan for NETCONF/YANG OLT management
  • TR-402 PON Abstraction Interface for Time-critical Applications

NG-PON2 Council

The NG-PON2 council was formed to centralize and disseminate the expertise and experience of the NG-PON2 market in order to facilitate the rapid deployment of NG-PON2 implementations. If you are interested in joining, contact

View on BBF wiki (login required)


Gfast Characteristics

  • Up to 2 gigabits per second dedicated per customer
  • Dynamic bandwidth brings upstream/upload speed comparable to downstream/download speed

Gfast Impact for the Industry & Subscribers

  • Deploys faster by extending fiber to existing wiring infrastructure
  • Eliminates the need for new construction work in and to premises
  • No customer disruption
  • Self-installation applies in many locations – lowering cost of deployment
    • Minimizing infrastructure construction and civil works approval requirements
    • Reverse power feed provides lower cost power alternative
    • No new fiber in the last segment
  • Recommended way to get ultrafast broadband where it is impracticable to economically deliver fiber
  • Creates new opportunities for communities who have not had the necessary broadband infrastructure to attract business investment
  • Brings high speed networking and the digital community to new areas around the world – possibly 100s million
  • Meets the demands of delivering increasingly ubiquitous cloud-computing
  • An important new tool in providers’ strategy for ubiquitous fiber deployment
  • Impact is dependent of stakeholder/application
      • Enables the opportunity to run services/applications at a residence or small offices that have normally been associated with a fiber-connected metro office
      • Enables high-end consumer video and gaming experiences

Gfast Council

The Gfast council was formed to centralize and disseminate the expertise and experience of the Gfast market in order to facilitate the rapid deployment of Gfast implementations. If you are interested in joining, contact


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