VOIP allows IP networks to carry voice applications like telephony and conferencing. It uses protocols like SIP, H.323, and MGCP for signaling and codecs like G.711 and G.729 for compressing analog voice. Key VOIP components include IP phones, gateways, call agents, and MCUs. Signaling protocols establish and terminate sessions, with SIP and H.323 using a peer-to-peer model and MGCP using a client-server model. Considerations for VOIP include low jitter, latency under 150ms, minimal packet loss, and high availability to provide a reliable voice service over IP networks.
Zyxel’s Fiber Access solution provides versatile fiber connectivity for service providers according to the deployment requirements. Service providers can highly optimize and integrate various FTTx applications with the freedom to deploy services easily on GPON, GEPON, Active Fiber solutions with OLT, ONU/ONT and active fiber gateways.
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.
Kyeong Soo Kim, Academic Weeks Videoconference Session with Pakistan COMSATS Institute of Information Technology (CIIT), Swansea University, Swansea, Wales UK, Dec. 14, 2010.
Zyxel’s Fiber Access solution provides versatile fiber connectivity for service providers according to the deployment requirements. Service providers can highly optimize and integrate various FTTx applications with the freedom to deploy services easily on GPON, GEPON, Active Fiber solutions with OLT, ONU/ONT and active fiber gateways.
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.
Kyeong Soo Kim, Academic Weeks Videoconference Session with Pakistan COMSATS Institute of Information Technology (CIIT), Swansea University, Swansea, Wales UK, Dec. 14, 2010.
Space-efficient Verifiable Secret Sharing Using Polynomial Interpolationnexgentechnology
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International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
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A NEW SYSTEM ON CHIP RECONFIGURABLE GATEWAY ARCHITECTURE FOR VOICE OVER INTER...cscpconf
The aim of this paper is to present a new System on Chip (SoC) reconfigurable gateway architecture for Voice over Internet Telephony (VOIP). Our motivation behind this work is
justified by the following arguments: most of VOIP solutions proposed in the market are based on the use of a general purpose processor and a DSP circuit. In these solutions, the use of the serial multiply accumulate circuit is very limiting for the signal processing. Also, in embedded VOIP based DSP applications, the DSP works without MMU (memory management unit). This is a serious limitation because VOIP solutions are multi-task based. In order to overcome these
problems, we propose a new VOIP gateway architecture built around the OpenRisc-1200-V3 processor. This last one integrates a DSP circuit as well as a MMU. The hardware architecture is mapped into the VIRTEX-5 FPGA device. We propose a design methodology based on the design for reuse and design with reuse concepts. We demonstrate that the proposed SoC architecture is reconfigurable, scalable and the final RTL code can be reused for any FPGA or ASIC technology. Performances measures, in the VIRTEX-5 FPGA device family, show that the SOC-gateway architecture occupies 52% of the FPGA in term of slice LUT, 42% of IOBs, 60% of bloc memory, 8% of integrated DSP, 16% of PLL and the total power is estimated at 4.3Watts
A NEW SYSTEM ON CHIP RECONFIGURABLE GATEWAY ARCHITECTURE FOR VOICE OVER INTER...csandit
The aim of this paper is to present a new System on Chip (SoC) reconfigurable gateway
architecture for Voice over Internet Telephony (VOIP). Our motivation behind this work is
justified by the following arguments: most of VOIP solutions proposed in the market are based
on the use of a general purpose processor and a DSP circuit. In these solutions, the use of the
serial multiply accumulate circuit is very limiting for the signal processing. Also, in embedded
VOIP based DSP applications, the DSP works without MMU (memory management unit). This
is a serious limitation because VOIP solutions are multi-task based. In order to overcome these
problems, we propose a new VOIP gateway architecture built around the OpenRisc-1200-V3
processor. This last one integrates a DSP circuit as well as a MMU. The hardware architecture
is mapped into the VIRTEX-5 FPGA device. We propose a design methodology based on the
design for reuse and design with reuse concepts. We demonstrate that the proposed SoC
architecture is reconfigurable, scalable and the final RTL code can be reused for any FPGA or
ASIC technology. Performances measures, in the VIRTEX-5 FPGA device family, show that the
SOC-gateway architecture occupies 52% of the FPGA in term of slice LUT, 42% of IOBs, 60%
of bloc memory, 8% of integrated DSP, 16% of PLL and the total power is estimated at
4.3Watts.
This presentation contain basic knowledge about how voIP work and what are the security threat in voIP. It will also contain how we can prevent attack on voIP system.
A short presentation on SIP Trunking. A background with SIP training and PSTN (T-1, ISDN PRI) and TCP/IP knowledge will be helpful. For more info connect with me at http://TrainingCity.com
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
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.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
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.
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
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.
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.
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
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
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
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.
The Art of the Pitch: WordPress Relationships and Sales
Voip basics
1. VOIP - Basics Vamsi Krishna, Manager – Business Solutions Works for Tata Communications
2. VOIP – What is this all about VOIP is a family of technologies that enables IP networks to be used for voice applications such as telephony, conferencing, messaging etc. In the traditional PSTN world, end users need not be aware/worry on various elements involved in telephone calls. How ever in VOIP awareness on Signalling, Bearer Channels, Codecs, Database services etc would be required.
3. VOIP – What is this all about SS7 – Signaling System 7 is the signaling type being used in PSTN – Out band Signaling i.e control messages are carried on dedicated channels. In VOIP – signaling are of two types: Peer to Peer (SIP & H.323) In this type the end points have intelligence to create, establish sessions directly, understand and interpret control messages. Client Server (SCCP, MGCP, H.248) In this type, a Call Agent holds all the intelligence. A scenario could that when a phone gets off hook, media gateway doesn’t provide the dial tone but sends the event alert to “call agent” which instructs the media gateway to provide the dial tone to the phone.
4. VOIP – What is this all about G.711 – a Codec/ compression mechanism to digitize and packetize the analog voice calls to a 64 kbps stream. Bandwidth per voice call required would be approx 80 kbps. G.729 – a Codec/compression mechanism to digitize and packetize the analog voice calls to a 8 Kbps stream. Bandwidth per voice call required would be approx 24-28 kbps.
5. Components of VOIP IP Phone/End Points – End user interface for telephone calls. Gatekeeper: Provides Call Admission Control, Bandwidth Management, QOS, Network Translation. Gateway: Does IP-TDM conversion. Call Agent: Similar to Gatekeeper MCU: Mixes multiple calls and supports conferencing Application Servers: Supporting Messaging, Presence, Voice Mail, IVR etc.
6. VOIP Signaling – H.323 H.323 is an ITU Standard. It’s a Peer to Peer Signaling Protocol. Its an umbrella of protocols defined to support synchronized voice, video and data. Primarily built for Multimedia Conferencing. This is a connection-less protocol. This evolved from H.320 ISDN Standard.
7. VOIP Signaling – MGCP MGCP is a Client Server Signaling Protocol. It’s a IETF Standard Emerging standard for PSTN Gateway Control or Thin Device Control. Useful since each end point need not deploy full signaling intelligence such as H.323 In this, the gateway/end point communicates/notifies events to a more intelligent central device called call agents which instructs the gateway/endpoint on further steps.
8. VOIP Signaling – SIP SIP is an IETF Standard, less complex than H.323. Session Initiation Protocol. It’s a Peer to Peer Signaling Protocol. Its defines on the commands and responses to set up and close sessions between two end points. It also details on Security, Proxy and transport protocol services. SIP along with other partner protocols such as SDP (Session Discovery Protocol), SAP (Session Announcement Protocol) provides information on multicast sessions to the users. SIP is a text bases protocol heavily borrowing functionalities from HTML such as request and respond model, similar header and response codes. It uses URL Style addressing.
9. VOIP Signaling – SCCP Cisco Proprietary Works between Cisco End Points and Call Manager.
10. Comparing VOIP Signaling Protocols H.323 calls for complex configuration between Gateways. This will require configuration of dial plans, route patters on the Gateways. Ex can be H.323 between CUCM – Cisco 3845 connecting to PSTN World. Cisco 3845 is configured with full dial plans. Both Q931 and Q921 terminates on 3845. In MGCP Scenario, Q921 terminates on to the router while Q931 is backhauled on to the CUCM. All Route plans, dial patterns are configured on the CUCM, In SIP Scenario is very much came as H.323.
11. VOIP Considerations Jitter – Should be as low as possible Latency – one way to be less than 150 ms Low packet loss – as this is a UDP. High availability In TDM, dedicated bandwidth, dedicated timeslots, no variable delay or jitter. PSTN provides 99.999
12. More on VOIP RTP – This is the protocol which carries the actual voice/video payload between the two points. RTCP is a sister protocol providing call control/stats for the RTP Stream. RTP & RTCP function over UDP. RTP is generally between 16384 to 32677 port number. RTP is even port numbers, RTCP is odd port number. cRTP & sRTP have been developed to enhance RTP. RTP defines on how the payload is to be transported such as payload identification, time stamping, sequencing etc. Using Time Stamps & Sequence Numbers on the Header the receiving end point can buffer and play back appropriately. RTP doesn’t request for retransmission. RTP Header is of 40 bytes Size.
13. What is a PBX A small exchange owned by company. This lets the company take fewer number of trunks from telco. Typically number of lines required are 10% of the extensions.