The internet has become so widespread that such issues as access, regulation and related
policies have become major factors in the economy and social fabric of societies in every part
of the world. Peoples without running water are demanding access to the internet and those
without it are becoming deprived citizens. This new book examines current issues of interest
to the blossoming area.
Lecture Discovering computers fundamentals - Chapter 2 include objectives: Identify and briefly describe various broadband Internet connections, describe the types of Internet access providers, explain the purpose of a Web browser and identify the components of a Web address, describe how to use a search engine to search for information on the Web,...
Since the fi nal decades of the twentieth century, data networks have known steadily growing
success. After the installation of fi xed Internet networks in many places all over the planet
and their now large expansion, the need is now becoming more important for wireless access.
There is no doubt that by the end of the fi rst decade of the twentieth century, high-speed wireless
data access, i.e. in Mb/s, will be largely deployed worldwide.
The FCC “has generally advocated market-based mechanisms that will
promote competition, provide flexibility to broadband providers, and stimulate investment in
broadband networks.”5 It believes that “[w]ireless broadband, as well as other alternative
broadband platforms such as satellite and broadband over power lines, can create a competitive
broadband marketplace and bring the benefits of lower prices, better quality, and greater
innovation to consumers.
This article compares and contrasts two technologies for delivering broadband wireless Internet access
services: ‘‘3G’’ vs. ‘‘WiFi’’. The former, 3G, refers to the collection of third-generation mobile technologies
that are designed to allow mobile operators to offer integrated data and voice services over mobile
networks. The latter, WiFi, refers to the 802.11b wireless Ethernet standard that was designed to support
The vast majority of U.S. residential consumers face a monopoly
or duopoly in broadband Internet access. Until now, the Internet has been
characterized by a regime of “net neutrality,” which means there has been no
discrimination between the price of transmitting packets based on the
identity of either the transmitter or the identity of the receiver, based on the
application, or the type of content the packet contains.
Wireline network operators have increased available customer bandwidth with xDSL
modems, DSLAMs and Broadband Remote Access Server (BRAS) systems. While this
basic topology enables standard broadband service, most service providers want to
expand their portfolios of broadband offerings to improve their competitive position,
increase revenues and decrease operational expenses.
The foundation of multimedia distribution is provided by several components, the most important ones being services, content distribution
chain and protocols. The fundamental idea is to use the Internet for
content acquisition, management and delivery to provide, e.g., Internet
Protocol Television (IPTV) infrastructure with Quality of Service (QoS)
facilities. Another important goal is to offer the end user the so-called
Triple Play, which means grouping together Internet access, TV and
telephone services in one subion on a broadband connection.
There has never been more pressure on bandwidth and cable plant. The resources of cable
providers and telephone companies are being stretched to the limit due to the addition of
such items as second lines for children, computers, security and the advent of the “smart
house.” This situation is compounded by the race to offer the telecommunications “triple
play” – a combination of voice services; cable TV and video on demand; and high-speed
data and Internet access.
Khu vực này là một trong những được bao phủ bởi một BS. Bất cứ khi nào người dùng di chuyển ra khỏi khu vực, thông tin liên lạc (hoặc phiên) bị gián đoạn. Một ví dụ điển hìnhĐường trục: đài phát thanh liên kết Internet Backbone: có dây liên kết (sợi quang học cũ)
A major global enterprise-network service provider needs to deploy
both metro- and regional-access rings to meet a customer’s demand
for a highly reliable network to support critical enterprise applications.
This includes interconnection of its mainframe systems and storagearea
Engage a professional services partner with in-depth technical expertise
and proven experience to complete the project on-time, on-budget
while delivering superior quality to meet the end customer’s needs.
As a long-time supplier of IP network infrastructure to cable multiservice
operators (MSOs) around the world, ARRIS has built a strong
reputation for high-quality products that work as advertised. ARRIS
provides operators of broadband local access networks with video, highspeed
data, mobile and fixed-line telephony systems for the delivery of
voice, video and data to residential and small-to-medium sized business
One of the greatest challenges facing mobile operators today is reducing the cost of the
backhaul portion of their network, while increasing reliability and revenue generating
opportunities. Additionally, mobile operators need to be sure that the backhaul transport
solution is capable of addressing the traditional 1 and 2G-based Radio Access Networks
(RANs) as well as the 3G-based RANs. The number of 3G-based RANs will grow driven by
new services with higher bandwidth that enable end-users to get broadband access through
their mobile devices....
The Soneplex Remote Test Access Unit (RTAU) module provides a full complement of DS1 test
capabilities to the Soneplex Broadband platform. Test capability can now be deployed directly in
the loop electronics, at a cost well below methods typically deployed such as test heads or
portable test equipment. The Soneplex RTAU allows operators to test from multiple points in the
network, both remote and local, supporting intrusive testing, remote loopback control, test signal
generation and insertion, performance monitoring, measurement, jack access, and more....
Voice over Internet Protocol (VoIP) is a form of communication that allows you to make phone calls over a broadband internet connection instead of typical analog telephone lines. Basic VoIP access usually allows you to call others who are also receiving calls over the internet. Interconnected VoIP services also allow you to make and receive calls to and from traditional landline numbers, usually for a service fee. Some VoIP services require a computer or a dedicated VoIP phone, while others allow you to use your landline phone to place VoIP calls through a special adapter.
Benefits Realized by the Customer:
BGX/ACE systems support rapid change, maintenance and turn-up of new services, creating faster generation
of revenues and decreased costs of technical labor and service downtime. Technicians are no longer forced
to work in crowded splice cases. The risk of cutting the wrong fiber or knocking down live service is virtually
eliminated. BGX/ACE systems arrive preprovisioned, eliminating guess work from fiber identification.
Technicians access the network at virtually any time without inconveniencing customers and without
requiring expensive new structures....
Most businesses have broadband (high speed) access to the Internet. It is important to keep in mind that
this type of Internet access is always “on.” Therefore, your computer - or any network your computer is
attached to - is exposed to threats from the Internet on a 24 hour a day/7 day a week basis.
For broadband Internet access, it is critical to install and keep operational a hardware firewall between
your internal network and the Internet. This may be a function of a wireless access point/router or may
Broadband Wireless Mobile (3G and 4G) will be the next key developments in wireless communications. Immense interest has been fuelled by large demand for high frequency utilisation as well as a large number of users requiring simultaneous multidimensional high data rate access for the applications of wireless mobile internet and e-commerce. Broadband wireless mobile extends the corporate LAN to common areas such as meeting rooms and enables in-building public wireless hotspots such as airport lounges to provide wireless portable computer connectivity...
Guy Davies has worked as an IP Architect for Telindus, a network integrator in the
UK, for four years. While at Telindus, he has been involved in many projects ranging
from the design, implementation and operation of customers’ core IP networks through
to migration of ATM networks to an IP and MPLS-based infrastructure, and the design
and implementation of large secured wireless networks and consultancy as well as the
development of wireless rural broadband access.
Introduction to Broadband Wireless
roadband wireless sits at the confluence of two of the most remarkable growth stories of the telecommunications industry in recent years. Both wireless and broadband have on their own enjoyed rapid mass-market adoption. Wireless mobile services grew from 11 million subscribers worldwide in 1990 to more than 2 billion in 2005 . During the same period, the Internet grew from being a curious academic tool to having about a billion users.