Multimedia Services Over Terrestrial Cable Television Networks

Cable Television (TV) networks deliver TV broadcasts from TV stations to cable TV subscriber homes. Digital TV broadcasts using VHF and UHF frequencies between 47 MHz to 862 MHz. Each TV channel occupies 6 MHz bandwidth and modulated using 64/128/256 QAM before combines together with all other channels at the cable TV headend. Coaxial cables are used to deliver the TV RF signals to the subscriber homes. The frequency band below 47 MHz is used to carry return path traffic from the subscribers to the cable TV headend.

In order for the cable TV network to delivery high speed data services, a set of cable network communication interface and operation support standards call DOCSIS (Data Over Cable Service Interface Standards) are developed by the cable industry. There are four version of DOCSIS; Versions 1.0, 1.1, 2.0 and 3.0. DOCSIS 1.0 enables cable TV operators to provide internet access up to 36 Mbps downstream over their HFC (Hybrid Fiber Coax) networks. Version 1.1 adds QoS (Quality of Service) capability to enable cable TV networks to deliver voice and streaming services (IP multicast). Version 2.0 enhanced the upstream speed (30 Mbps maximum) using 64 QAM modulation and 6.4 MHz upstream channel bandwidth to accommodate increase in demand of symmetric services (e.g. IP telephony). DOCSIS 3.0 significant increases the downstream speed (to 160 Mbps) and upstream speed (to 120Mbps) by bonding multiple upstream and downstream channels. Version 3.0 also introduces support for IPv6.

PacketCable is another cable industry standards developed to provide packet based voice, video and other high speed multimedia service over HFC cable systems. PacketCable is a set of protocols developed to deliver QoS enhanced communications services using packetized data transmission to a consumer’s home over the cable network. PacketCable network architecture support toll quality VOIP (Voice over IP) services and allows connection of a plain analog phone using an Embedded Multimedia Terminal Adapter (EMTA). It supports primary and secondary residential voice line with battery backup capability. PacketCable leverages QoS capability of DOCSIS 1.1/2.0 and will support SIP (Session Initiation Protocol) in version 2.0. While the initial service offerings for PacketCable product line are Packet Voice and Packet Video, the long term objective encompasses a large family of packet based services such as Virtual Private Network (VPN), real time interactive video sessions, multimedia telephony, interactive gaming and media streaming.

The two main components in DOCSIS are the Cable Modem (CM) in the subscriber premise and the Cable Modem Termination Systems (CMTS) in the cable operator headend. DOCSIS specifies the physical and MAC layers communications interfaces between CM and CMTS. PacketCable networks use IP as the basis for robust multimedia architecture. PacketCable architecture supports end-to-end functions including signaling for services, media transport at variable QoS levels, security, provisioning of the client device, billing, and other network administration functions.

PacketCable VOIP telephone service uses a managed IP network instead of the public internet to carry its voice traffic. PacketCable specifications for Voice over IP (VoIP) describe the basic functions that are typically consolidated onto a single Class 5 central office switch. These functions can be implemented across multiple elements or can be consolidated onto a single element, which leads to a low cost, highly flexible, scaleable distributed architecture.

With the deployment of DOCSIS and PacketCable network architecture, cable operators can become full service providers of triple play of voice, data and multimedia services. Cable operators can also use their cable network to provide CableHome services such as remote control, management and diagnose of customers’ home network (router, firewall, network address translation, secure software download, etc) and other devices.

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Conferencing internet Services ? Improved Communication

Communication is one of the most important aspects of business as well as social affairs. Especially in business, nobody can remain in isolation. To expand and sustain a business it is required to keep maintain communication with lots of people. It is needed to keep well connected with both internal as well as external public of a business organization. It may be propagating ideas among the colleagues or making deals with clients. It is possible for large organizations to have offices at distance geographical locations, but small organizations cannot do that due to lack of financial resources. Still they need to keep contact worldwide. Nowadays, while talking about conferencing, internet is the best solution. There are lots of internet conferencing services available throughout the world to make communication easier, better and cost effective. Through the route of conferencing internet has provided this much fruitful solution to the small companies in terms of communication.

In previous days only conferencing was possible only through audio medium. However now it is possible to make video conferencing with the advent of technology. Video conferencing nternet medium is being used for conducting seminar or business meetings with delegates based in different continents. It helps in cutting the cost of accommodation, transportation and other logistical aspects. The costliest item in the world ‘time’ is also saved with the help of video conferencing ervices. It appears as if all the participants are sitting across the table in the same room. The professionals can attend a business meeting sitting in the comfort and privacy of their own office. Traveling time, traveling costs and all other traveling hassles can be right cut off using internet video conferencing services.

Small business houses can use these video conferencing internet services to add up clientele at places they cannot afford to travel to. Many of them do not have either the man power or the financial ability to spare such huge time and money on expansion.

It is quite convenient and cost effective for them to take up internet Video Conferencing services so as to enhance their reach. Moreover video conferencing internet services provide the exact experience as in face to face meetings. Since the traveling time is cut off, the employees can stay more time at their homes and it actually helps the employee satisfaction angle of the company. Since tiredness due to extensive travel is eliminated, the employees can also show more productivity.

There are many video conferencing internet service providers with an array of services at several pricing schemes. Companies can choose among these schemes according to their budget and requirement. The materials required to use internet based video conferencing services are mostly available in any office. A computer, an internet connection, a web cam and audio devices are all that you need. Nowadays however, some service providers have designed their technology in such a way that any type of camera having video technology can be used for the conferencing. With the advent of computer technology, it is now even less costly since almost all laptops have all these things assembled within. The only external thing required is an internet connection. In short, internet conferencing services are making business communication less costly, less time consuming and much convenient.

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by Gloel

Affordable telephone and video conferencing services

Investing in teleconferencing services of any sort, be it audio conferencing a> or video conferencing or both, has become a serious and even expensive issue. Presently there are many companies that particularly serve to support their clients with complete conferencing solutions. Their services mainly include different types of teleconferencing services like voice conferencing, web video conferencing, phone video conferencing etc. In fact presently the diversity of conferencing services and the possibilities of telecommunication are endless. Now these different types of conferencing services are mainly getting nourished with the aid of internet, wireless telephones connections and growing satellite technologies.

The companies dealing with this type of conferencing services normally offer you several set of schemes meeting your budget and goals. Among the multiple and affordable teleconferencing service providers you can choose the most suitable and synchronized services with flexible sessions. Besides teleconferencing services, some of these companies also provide online training and some additional conferencing ervices like event conference call, webinar etc. with specialized web conferencing tool. A web conferencing company also gives you options to hold a desktop video conferencing session as long as you like. They actually do not limit any time limit in phone video conferencing and you can access them whenever you wish.

With the help of a cost effective web conferencing company you can get the opportunity to interact with as many people as you want, irrespective of their distances from your place. You also can carry the teleconferencing on for as long as you want at utmost comfort in your home or office environment. According to your affordability you can increase or upgrade your teleconferencing plan to attain more people at one go. These affordable telephone conferencing services meet your satisfaction giving out a considerable saving end of the month. This way, teleconferencing services have become the most comprehensive and inevitable resources to many of us.

So these conference calling services welcome you to share and exchange your thoughts and ideas more effectively and powerfully maintaining optimum privacy and observance of conversation and the secrecy of your business data. Few of the advanced phone conferencing service providers keep the record of your conversation on their database for a certain period of time with your consent so that people who missed the conference can call to the center and get the conversation detail. Some of the tele conferencing ervice providers like A+ conferencing widely helps those who have clients and colleagues throughout the world with their strength of upgraded conferencing network. Their services, besides conference calling, normally include video email with file sharing options. These conference calling services create a virtual office for you to manage your business.

If you can reach the most efficient service provider you may get some additional services like credit card processing, billing services etc.

Thus phone video conferencing is the most affordable and powerful way of communication by which you can broadcast your thoughts and ideas to the audience throughout the world. By documenting your conferences, these services also allow you to develop and expand your targeted audience most effectively.

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by wallyg

Web Based Video Conferencing Services Easiest Way To Communicate

Web based video conferencing has facilitated the professional as well as personal life of the individuals. conferencing olutions"> Video conferencing solutions are the best solution for avoiding the hindrance related to the distance in carrying out any work. Webinar providers are source to conduct online meeting with more than two employees or clients. Web based video conferencing services have lead to introduction to many new techniques in business. Now it’s easy to conduct meetings, seminars with the employees sitting at distant places. Distance was one among the major hindrance in the development of any business but video conferencing solutions have facilitated the professional and personal life of the people to a greater extent. Webinar providers help in carrying out the work through the web services and online chats and meetings.

Video conferencing solutions are the best for creating an impact on the distant person as many a time’s telephonic conversation cannot create that impact which is required in any personal meet, in business etc. Web based video conferencing services has lead to the beginning of new era of technology which is been accepted by many people. In recent years there are fast and tremendous changes in the computer world.

Much advancements are been made continuously in the field to facilitate the individual life in a better and best possible way. Webinar providers help the companies to conduct seminars among the different branches of the company and can enable efficient working within the company. Companies often deal with there client through and with the help of web services. In web chat just cams form both the sides are required and internet connection is required. . It enables the individual to establish communication over the internet and it is getting popular with the expansion and introduction in its technology to facilitate the lives of individuals professionally as well as personally. Individuals compulsorily now, be in touch with the people at distant places to enable proper and perfect working.

Webinar providers have enabled the conduct of seminars through web services to train their people, to deal with the clients, to deal with partners and associates. The accessibility of business has become easier to distance places, off shore countries due to the use of the internet services. It gives the business owner the facility to gather people and employee from different departments and different branches of the offices. Anyone can chat to a person at distant places through the web based video conferencing services. Businesses using the video conferencing solutions to overcome the problem of distances are working more effectively and efficiently. Secrecy is maintained in the process as the person who has been provided by the URL and address can only attend the meeting or video conference. Proper secrecy can be maintained with the help of URL and password to access the procedure to attend the meeting.

The web services have enabled the individuals to remain in touch through the services being provided instead of the distances between places. Much advancement is being look forward to get more facilitated in the personal and professional lives.

secondlife.wikia.com blogs.secondlife.com Philip Rosedale | Founder and Chairman of the Board Philip Rosedale founded San Francisco-based Linden Lab in 1999, and has led the creation of the virtual world of Second Life from initial concept to a market-leading virtual world, with a robust economy and a global population. As a pioneer in the virtual world industry, Rosedale is actively involved in the strategy, development and design of Linden Labs products, including the world of Second Life and the Second Life Grid platform. Rosedale is known for his entrepreneurial approach to new technologies, starting a network software company when he was 17. In 1995 he created an innovative internet video conferencing product, which was later acquired by RealNetworks, where he went on to become Vice President and CTO. In 1999, the advent of consumer broadband and better PC 3D graphics inspired Rosedale to leave RealNetworks and found Linden Lab, pursuing his lifelong dream of creating an internet scale virtual world. Rosedale holds a BS degree in Physics from the University of California at San Diego Linden Lab was founded in 1999 by Chairman of the Board Philip Rosedale and is headquartered in San Francisco. The company is led by CEO Mark Kingdon, the former CEO of Organic, Inc.
Video Rating: 5 / 5

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by Chris Pirillo

Webinar services, video conferencing solutions an easy way to carry on business

Video conferencing solutions have lessen the burden of traveling far with the purpose of business or individual motto’s. The IP Video Conferenc conferencing a> have facilitated the business in far better way, the clients can deal with the company directly through the conferencing. It is one among the greatest technology that has enabled to maintain long distance businesses and long distance relationship. Many seminars from one country to another is now been easily conducted with the help of webinar services. Many business persons have faced problems due to larger distances between their company and the clients of the company. The distance was somehow like a hindrance for the business persons who wished to expand their business.