The document discusses key concepts and technologies of GPON (Gigabit-capable Passive Optical Networks), including:
1) The basic architecture of PON networks consisting of an OLT, ONUs, and a passive optical splitter.
2) Reasons for adopting the GPON standard such as supporting high-bandwidth transmission and long reach.
3) Key GPON technologies including ranging, equalization delay, dynamic bandwidth assignment (DBA), and wavelength division multiplexing (WDM) for upstream/downstream transmission.
These are sample slides taken from my 4 days long "GPON-FTTx" training course. This course has over 380 slides and it is a great source of learning about various topics related to GPON & FTTx. There are tons of exercises and real-world examples provided in teaching material.
Basics of Optical Network Architecture, PON & GPONSyed Shujat Ali
Our Team's University Project | A short presentation based project regarding optical fiber communication in which basics of Optical Network Architecture, PON & GPON were discussed.
These are sample slides taken from my 4 days long "GPON-FTTx" training course. This course has over 380 slides and it is a great source of learning about various topics related to GPON & FTTx. There are tons of exercises and real-world examples provided in teaching material.
Basics of Optical Network Architecture, PON & GPONSyed Shujat Ali
Our Team's University Project | A short presentation based project regarding optical fiber communication in which basics of Optical Network Architecture, PON & GPON were discussed.
Presented by Andy Sutton, Principal Network Architect - Chief Architect’s Office, TSO, BT at IET "Towards 5G Mobile Technology – Vision to Reality" seminar on 25th Jan 2017
Shared with permission
What LTE Parameters need to be Dimensioned and OptimizedHoracio Guillen
How to Dimension user Traffic in 4G networks
What is the best LTE Configuration
Spectrum analysis for LTE System
MIMO: What is real, What is Wishful thinking
LTE Measurements what they mean and how they are used
How to consider Overhead in LTE Dimensioning and What is the impact
How to take into account customer experience when Designing a Wireless Network
Presented by Andy Sutton, Principal Network Architect - Chief Architect’s Office, TSO, BT at IET "Towards 5G Mobile Technology – Vision to Reality" seminar on 25th Jan 2017
Shared with permission
What LTE Parameters need to be Dimensioned and OptimizedHoracio Guillen
How to Dimension user Traffic in 4G networks
What is the best LTE Configuration
Spectrum analysis for LTE System
MIMO: What is real, What is Wishful thinking
LTE Measurements what they mean and how they are used
How to consider Overhead in LTE Dimensioning and What is the impact
How to take into account customer experience when Designing a Wireless Network
The most common passive optical network (PON) standards in current use are Ethernet passive optical network (EPON) and gigabit passive optical network (GPON). GPON is the most widely deployed optical system in today's fiber-to-the-home (FTTH) networks. Why choose GPON?
View all Sessions
Kashif Islam, Solutions Architect , Cisco
Jay Romero, Sr. Director, IT Operations , Erickson Living
Come and learn how Erickson Living achieved deployment success using Cisco ME4600 based GPON Solution. Guest Presenter: Jay Romero, Sr.Director - IT Operations. Passive Optical Networks (PON) provides an effective and efficient way of providing fiber based high speed access to residential and business users. With the ever-growing demand for higher bandwidth, service providers are looking for fiber solutions that are cost-effective and easy to deploy and manage. This session will provide an insight into PON technology, with a focus on Gigabit-Capable PON. Attendees will learn basic design principles and applicable use cases for architecting a GPON Network using the Cisco ME4600 OLT and ONT/ONU. The presentation will outline the requirements to configure and verify an end-to-end service over ME4600 OLT. Redundancy mechanisms, such as Type B protection, in a GPON based environment will also be covered Attendees will walk away from this session with a firm understanding of the GPON technology, a clear view of applicability of GPON vs point-to-point ethernet for varius scenarios and reference designs for an effective, fast and reliable GPON network using Cisco ME4600 series of OLT and ONT products.
The logical alternative is to install a fiber-based distribution network that can handle speeds well beyond 1 Gbps, that is, Fiber-To-The-Desktop (FTTD). For the FTTD, you have to choose the best optical technologies: Gigabit Passive Optical Network (GPON) based optical technologies. This blog introduces the concept of using GPON for FTTD applications to serve the needs of the modern-day business.
Passive Optical Network: FAQ’s
What is Passive Optical Network?
Passive Optical Network (PON) is a type of fibre-optic access network. A PON reduces the amount of cabling and equipment required compared to an active optical network, where each user has a separate connection to the network hub. Generally, a PON configuration contains an optical line terminal (OLT) at the service provider's central office and a number of optical network units (ONUs) or optical network terminals (ONTs) near end users.
How does it work?
PON uses an optical splitter to allow multiple subscribers to share a single fibre connection to the service provider's network. Furthermore, the splitter is a passive device that does not require any power.
The OLT contains a laser that sends an optical signal down the fibre to the splitter. As a result, the splitter then separates the signal into multiple signals, each of which is sent to a different ONU or ONT.
The ONU or ONT converts the optical signal back into an electrical signal that can be used by the customer's equipment.
www.nmcabling.co.uk
Let's dive deeper into the world of ODC! Ricardo Alves (OutSystems) will join us to tell all about the new Data Fabric. After that, Sezen de Bruijn (OutSystems) will get into the details on how to best design a sturdy architecture within ODC.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
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We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
Search and Society: Reimagining Information Access for Radical FuturesBhaskar Mitra
The field of Information retrieval (IR) is currently undergoing a transformative shift, at least partly due to the emerging applications of generative AI to information access. In this talk, we will deliberate on the sociotechnical implications of generative AI for information access. We will argue that there is both a critical necessity and an exciting opportunity for the IR community to re-center our research agendas on societal needs while dismantling the artificial separation between the work on fairness, accountability, transparency, and ethics in IR and the rest of IR research. Instead of adopting a reactionary strategy of trying to mitigate potential social harms from emerging technologies, the community should aim to proactively set the research agenda for the kinds of systems we should build inspired by diverse explicitly stated sociotechnical imaginaries. The sociotechnical imaginaries that underpin the design and development of information access technologies needs to be explicitly articulated, and we need to develop theories of change in context of these diverse perspectives. Our guiding future imaginaries must be informed by other academic fields, such as democratic theory and critical theory, and should be co-developed with social science scholars, legal scholars, civil rights and social justice activists, and artists, among others.
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
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Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
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- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
2. Overview of Optical Access Network Analysis of GPON Standards Contents GPON Key Technologies GPON Management and Service Provisioning Basic Concepts of PON Basic Services over GPON Network
3. Basic Concepts of PON This chapter describes the basic concepts and working principle of PON network. After reading it, you will have a preliminary understanding on the PON network. This chapter introduces the basic architecture, upstream and downstream working principle of the PON network.
10. Comparison Between GPON and EPON Ethernet GEM/ATM Data encapsulation mode 8B/10B NRZ Line encoding Pure data service Multi-service/ FTTx Application mode Enterprise Intranet Carriers Choice of carriers Px10/Px20 Class A/B/C Power budget Weak, extended by vendors powerful OAM Small vendors involved Large vendors involved Maturity RTT Equalized logical reach by adjusting EqD Ranging 72% 92% Broadband efficiency Defined by vendors Standard format DBA None OMCI ONT interconnectivity CESoP CESoP / Native TDM support 1:16~1:32 1:64~1:128 Split ration 1.25G/1.25G 2.488G/1.244G Rate IEEE ITU.T Standard EPON GPON
11. Overview of Optical Access Network This chapter describes the architecture of the optical access network. After reading it, you will have a understanding on the FTTx network. Besides, this chapter describes various devices applied in the FTTx network and you can get a knowledge of those devices applied in the optical access network.
12. CO Curb Customer Premise BA FTTC FTTB OLT OLT Architecture of Optical Access Network DSLAM 250-700m Urban Coverage 3.5-5km Remote Business xDSL 2~20Mbps OLT FTTH ODN MDU ONT ONU Optical Line Termination Optical Networks Termination Optical Networks Unit Multi-Dwelling Unit 2.5Gbps Down /1.25Gbps Up 2.5Gbps Down /1.25Gbps Up 2.5Gbps Down /1.25Gbps Up
13. From the architecture diagram, the optical access network comprises the following scenarios: 1. FTTB scenario As an access scenario for business users, Fiber to The Business (FTTB) scenario falls into single business unit (SBU) and Business Multi-tenant unit (MTU) in terms of capacity . Of them, SBU provides a comparatively small number of ports, including following types: POTS, 10/100/1000BASE-T, RF(33dBmV), and DS1/T1/E1 ports; MTU provides a comparatively larger number of ports, including following types: POTS, 10/100/1000BASE-T, RF and DS1/T1/E1 ports. 2. FTTC & FTTCab scenario As an access to the curb or the cabinet over fibre, Fiber to The Curb& Fiber to The Cabinet (FTTC & FTTCab) scenario is for the Multi-dwelling unit (MDU), providing a comparatively larger number of ports, including following types: 10/100/1000BASE-T, RF(33dBmV), VDSL2, and so on. 3. FTTH scenario As an access to the home over fibre, Fiber to The Home (FTTH ) scenario is mainly for the single family unit ( SFU), providing a comparatively small number of ports, including following types: POTS, 10/100/1000BASE-T, and RF(18dBmV). What is Optical Access Network?
14. Analysis of GPON Standards This chapter analyses major GPON standards. After reading it, you will have a understanding on the module reference, performance, frame structure, as well as basic terms of GPON network, such as GEM, port and T-CONT.
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16. GPON Network Model Reference WDM ONU/ONT NE WDM OLT NE Service node Optical splitter T reference point V reference point R/S S/R ODN UNI SNI IFpon IFpon ONU Optical Network Unit ONT Optical Network Terminal ODN Optical Distribution Network OLT Optical Line Terminal WDM Wavelength Division Multiplex Module NE Network Element SNI Service Node Interface UNI User Network Interface
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29. GPON Key Technologies This chapter describes GPON key technologies. After reading it, you will have a understanding on key technologies of GPON, such as ranging, equalization delay (EqD), dynamic bandwidth assignment (DBA), QoS and optical power.
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47. GPON Management and Service Provisioning This chapter describes GPON management and service provisioning. After reading it, you will have a understanding on OMCI ( the management and maintenance message type ) and ONT service implementation.
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50. GPON Service Provisioning and Zero Configuration on Terminals Carriers’ nightmare Application scenario Service Provisioning NMS 2000 Access Network Billing 2 Configure service network 3 Order Management Start up ONT and make registration with serial number ONT ONT ONT ONT CRM User Send terminals to users 1 2 Finish the auto-configuration of OLT Initial configurations (such as service system information configuration, data configuration) are required on terminals and then they can be put into use. To finish these configurations, it is not cost-effective to carriers. GPON supports zero configuration on terminals and plug-and-play of terminals, which is cost-effective. Flexible Configuration plan of GPON STB 3 Use OMCI to finishing data configuration on ONT 1 Subscribe for services
51. VOIP Service Management Solution in GPON SoftX3000 Service Provisioning IADMS Access Network CRM Billing UMS 1 Subscribe for services 2 Configure SoftX 3 Configure IADMS Activation code generator 4 Generating activation code User 5 Send activation code and terminal to users Phone Phone Phone Phone Order Management 6 Input activation code 7 Configure terminals automaticallythroughTR069 Maintenance personnel use activation code generator to generate terminal activation code (including IADMS IP, PPPoE user name and password). Users input activation code on terminals, terminals register on IADMS upon power-up and the IADMS makes auto-configuration on terminals. Basic operation and maintenance process Description Process and Networking ONT ONT Service provisioning Terminal activation Daily management
52. Basic Services over GPON Network This chapter describes basic services provided by GPON System, such as Triple-play, TDM and RF overlay services.
53. ASP/ISP CPE MSE Ethernet OLT Softswitch NMS TL1/CORBA /API BB service platform Carrier’s OSS Notification Triple Play Solution in GPON Phone PC SBU NSP CBU E1 FE ODN Splitter Base station BRAS AAA Server IP Core Internet VoD Server Middle ware IPTV Phone PC SFU CPE MDU VDSL IP Voice
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55. RF Overlay Service Solution in GPON EDFA （ Erbium Doped Fiber Amplifier ） Optical Couplers （ WDM ） OLT (Optical Line Terminal) ONU (Optical Network Terminal) Central Office Video 1550nm Voice/Data& Video 1490/1310nm ， 1550nm Voice/Data Downstream 1490nm Upstream 1490nm Customer Premises Optical Splitter Video （ RF ） IP Voice and Data @1250Mbps Voice and Data @2500Mbps Video Analog TV Digital TV HD/VOD 42Mhz 550Mhz 860Mhz Upstream Downstream 1310nm 1490nm 1550nm
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Editor's Notes
Good morning/afternoon, ladies and gentlemen. I’m very glad to have a chance to introduce GPON technology to you. Huawei provides this solution based on fixed network consolidation and migration. Why will we talk about the fixed network consolidation and migration?
IN brief the EM’s features cover the full FCAPS areas and we of course also provide this functionality both as a GUI and northbound integration capability.
最大逻辑距离：就是不考虑设备本身硬件处理时延，光纤传输时延等因素的情况下的最大传输距离。 最大物理距离：就是实际的传输距离 最大距离差：就是不同的 ONU 距离 OLT 设备的距离差
1.In GPON, downstream frames are transmitted in a broadcast manner with a fixed length of 125us. Same downstream data arrives at all ONUs and then each ONU filters the incoming data based on ONU-ID. 2.In GPON, upstream frames are transmitted in the TDMA manner. The uplink is divided into time slots and the time slots are allocated to ONUs according to the BWmap field in GPON upstream frames. In this way, all ONUs can transmit data in a certain order and no collision occur. Each frame has 9120 time slots. 3.In GPON, T-CONT is introduced to the uplink. T-CONT is a container that carries data, similar to the VC in the SDH. Data are transmitted through the particular T-CONTs. T-CONT eases bandwidth allocation and facilitates dynamic bandwidth
1.In GPON, upstream frame comprises these fields: PLOu, PLOAMu, PLSu, DBRu, and Payload. The following describes the meanings of these fields: PLOu: Physical layer overhead Upstream. It is for frame location, synchronization and identifies which ONU the frame belongs to. PLOAMu: The PLOAMu field reports maintenance and management status of ONUs. (Not all frames contains this field. Whether to send the field is negotiable.) DBRu: The DBRu field mainly reports the status of T-CONTs. To apply for bandwidth for the next, the field completes the dynamic bandwidth assignment to ONUs. (Not all frames contains this field. Whether to send the field is negotiable.) Payload: The payload of the data. It could be either DBA status report or data frame. If it is the data frame, it consists of GEM header and Frame. GEM header: The GEM header identifies data of different GEM ports. GEM port is the minimum unit for transmitting data in GPON, similar to the PVC in the ATM. Each type of service traffic corresponds to GEM ports, and the GEM port corresponds to T-CONTs. GEM header is divided into PLI, Port ID, PTI and HEC. The meanings of theses parts are as follows: PLI: it indicates the length of the payload. Port ID: it uniquely indicates a GEM port. PTI: it identifies the payload type, mainly identifying the status and type of the data that is currently being sent, such as whether it is the OAM message, or whether the data is transmitted completely. HEC: It provides Forward Error Correction (FEC) and ensures transmission quality.
In GPON, downstream frame comprises PCBd and Payload fields. The PCBd is mainly the physical control block, providing frame location, synchronization and bandwidth allocation functions. The Payload is mainly used for loading downstream data. Each frame may consists multiple units. PCBd: It contains the synchronization field, identifying whether to enable the FEC algorithm. The PCBd field is mainly used for the upstream bandwidth allocation to enhance the bandwidth utilization. Of the US BW Map field, AllocID identifies the serial number of T-CONTs; SStart and SStop indicates the number of time slots for starting and stopping transmission respectively; CRC is the parity bit.
in 2004, Huawei cooperate with NEUF telecom in France establish world’s first commercial triple play network, which by now, is becoming world’s biggest triple play network provide multi-service for 1,700, 000 customers. In 2006, reference to this successful application, DSL Forum publish it’s TR-101, try to standardize the triple play service.
That’s all for my presentation, any questions is welcome.
