The meaning of home networking is changing due to the
introduction of new technologies that are allowing for
more advanced applications. Today, the term home
networking means much more than having a house wired
with a phone line, Internet connection, and the latest
computers. At the very least, families want the ability
to share a printer or free themselves from the jumble of
wires and cords that typically plague home offices.
The technology available in home networking today is
much more sophisticated and practical than most families
realize. It can help them simply and affordably create a
home that evolves with their ever-changing
communications needs, networks their entertainment and
computing devices, and actually increases the level of
safety and security at home.
Transforming a Home
Almost every house in America comes equipped with a
standard phone line that runs throughout the structure
on twisted pair copper wire, delivering reliable voice
and data service to users. But this same, inexpensive,
ubiquitous wiring can also be used to network a home's
printer and entertainment devices and to add a new level
to home security.
By simply installing this twisted pair wiring to all
rooms in the home, you can virtually provide any type of
service required to each room. These services include 75
-300ohm video feeds for cable, satellite, VCR, and DVD;
550kHz - 108mHz audio feeds for AM/FM and CD; 300 -
3400kHz telephony feeds for phones, conferencing and
intercoms; and 10/100BaseT data feeds for computer
networking, Internet access, printer-sharing, and fax
machines.
This home networking setup is of a simple design. By
terminating these different media into a sophisticated
multiplexing device which can split audio/video and
voice/data input signals without degradation, a home
owner will have the ability to branch these signals
across the twisted pair wire to any location in the
home. Home networking will allow central location of
satellite and cable receivers, AM/FM antennas, computer
resources, etc., which plug into these multiplexers.
Then by simply making patch cord changes to a small
rack, located in a closet, the homeowner can control
what piece of information is fed to each room.
By implementing this new technology, homeowners will
no longer need sloppy expensive coaxial cabling,
generally used for video. Nor will they need to install
new cabling to meet the changing needs of a particular
room in the home. By simply making a change in the small
patch panel rack, families can deliver access to a
single, centrally located device, such as a DVD player,
stereo, or printer, to any room in the house. Instead of
buying expensive equipment for every room where they
desire access to movies, music, and printers, this
technology allows families to share just one unit.
Home networking essentially transforms the home into
a flexible series of rooms that can easily be readapted
as the family unit changes over time. For example, the
same standard RJ 45 outlet that can be used for an
audio/video baby monitor when the child is young can
then be easily used to network the room for a computer
and Internet and DVD access when that child grows up.
That bedroom can later use the same connectors and be
turned into a home office when the child leaves home.
Safety and Security Features
These same twisted pair wires and RJ 45 outlets can be
used to increase the level of safety and security in a
home. By sending a standard 75ohm video stream signal
from a camera outside or inside the home to the
multiplexer, any TV in the home can become a
surveillance monitor. This can also be set up to provide
surveillance to a pop-up window for TVs equipped with
P-I-P. Once installed, families can see images of anyone
standing in front of their homes via their television
sets.
Security features can also be accessed from outside
of the home, via the Internet. While away, parents can
use features such as the baby camera to check up on
their child and the baby sitter, making sure that
everything is going well.
Market Outlook
The future of home networking is strong. In fact, the
Yankee Group estimates that at least 21 million
households in the United States are interested in home
networking and that 12.4 million would like to implement
systems within the next year. Of those interested, the
most popular uses for a home networking system include
using it to communicate with friends and family and for
entertainment purposes such as viewing movies and
listening to music from any room in the house.
Because most families want to use a home network for
communication and entertainment, several different types
of companies will be able to break into this burgeoning
market. The companies include cable and infrastructure
manufacturers such as ITT Industries and Avaya, home
automation and home theater installers such as AVS and
Panja, and computer and networking manufacturers such as
Dell and IBM.
Eventually, this market will expand to include the
use of smart appliances and controllers, but most
analysts and industry professionals agree that popular
use and acceptance of these technologies is still
several years away. In the meantime, families can still
enjoy some practical uses of home networking today --
bringing the sophistication of the future into everyday
living.
Anthony Cicero is director of technology at ITT
Industries, Network Systems & Services --
Americas. ITT provides the connection that forms the
infrastructure for the future of communication..
People have been talking about the connected home for
years now, so why hasn't home networking finally
penetrated the market on the broad scale? There is not
one answer to this question as a number of factors have
contributed to the gradual adoption of home networking.
Home networking has had to overcome expensive
technology, limited access to broadband connections, and
consumer confusion. Now, with the lowering costs of
technology, the increase in high-speed connections, and
the proliferation of easy-to-use devices, consumers have
a real need for home networking.
Step One: Following Broadband Adoption
The adoption of high-speed Internet connections may have
gotten off to a slow start, but most industry analysts
agree that broadband is the next true killer app. With
the increase of Internet usage, consumers do not have
the time for anything but broadband. Broadband and home
networking go hand in hand because a user can maximize
their single high-speed connection and share it with all
the connected devices, which enables access to
bandwidth-intensive applications and files like
multimedia streaming, VoIP and multiple-player gaming.
In fact, according to Parks Associates, of the 30
million U.S. households predicted to have broadband
Internet connections by 2004, 17 million of them are
projected to have home networks.
The number of multiple-PC homes is growing at a
similarly astounding rate. The number of households with
more than one computer will grow at double-digit rates
through 2002, while the growth for single-PC homes
remains the same. Home networking adoption depends not
only on the penetration of broadband and multiple PCs
but also the pervasiveness of devices that drive
consumer demand for networking technology. As more and
more appliances penetrate the market, consumers are
interested in a way to simplify and coordinate the
abundance of products.
Step Two: The Proliferation of Devices
The second factor driving the demand for home networking
is the vast market penetration of devices. In fact,
according to Strategy Analytics, 85 percent of U.S.
homes will be online by 2005 with at least 75 percent of
that group using multiple devices. Home networking
enables all devices -- PCs, stereos, household
appliances, TVs, printers, PDAs, electronic games, etc. --
to operate together, sharing data over one unanimous
information source. By enabling these devices to
communicate, users can perform the networking basics
like sharing peripherals and Internet access. They also
can utilize the network to enable the printer in the
office to print documents stored on the computer in the
bedroom, while the bedroom PC is supplying the MP3 files
that are played on the stereo downstairs.
Tomorrow's Home Networking Solution
At the convergence of these trends, there is a clear
demand within the technology industry for a home
networking solution. Currently, there are several ways
to network the home:
Phone line networking uses the existing home phone
wiring connections to transmit information. This
technology has been around the longest. Phone line
connections are compatible with other networking
technologies and require no additional networking.
Ethernet enables flexible networks, meaning a user
can simply use two network interface cards and a
Category 5 cable to create an Ethernet connection, or
the user can set up multiple hubs, routers, and bridges
to create a multifaceted network. With this flexibility,
there is room to select the speeds at which the network
runs, which range from 10 Mbps to 100 Mbps. Yet Ethernet
requires new wiring to be installed, often requiring
reconstruction of homes. It is also hard to use and
often requires a lot of technical support.
Wireless networking enables computers and appliances
to communicate through radio signals, providing added
mobility, which is particularly convenient when using
laptops and handheld devices.
Powerline networking uses the home's existing
powerlines to send data at Ethernet-class rates to and
from computing and household appliances. Powerline
networking can coexist with already-popular devices that
use residential powerlines to communicate, including
X-10, Cebus, and LonWorks.
Step 3: Choosing The Best Home Network
It is evident that there are a number of viable home
networking solutions from Ethernet to phone lines. The
most effective network depends primarily on the products
being connected. Each solution presents unique benefits,
but some of the available networks do not provide a
comprehensive solution that meets all of a consumer's
demand, which is why using powerline and wireless
simultaneously makes sense in many cases.
One networking option may lie in the marriage of
wireless and powerline networking. This solution
combines the ubiquity and pervasiveness of powerline
with the utility and mobility of wireless. With
powerline as the backbone of the network, consumers can
plug in their appliances to any power outlet in the
home. Users can then set up a wireless network that
allows the mobile appliances to communicate with the
static appliances.
Ensuring the interoperability and coexistence between
networks are the industry alliances that have brought
companies together to develop standards-based networking
solutions. One alliance that is bringing powerline to
the forefront of home networking is the HomePlug
Powerline Alliance, which is comprised of more than 80
companies that are developing an open specification that
leverages the wide availability of residential
powerlines. Industry alliances, like HomePlug, help
reduce consumer confusion by creating one industry
standard for its specific home networking solution.
Operating with one industry standard helps bring the
vision of the connected home to a reality by ensuring
compatibility within the proliferation of home
networking products and services.
While home networking is in the early adopter stage
of its lifecycle, this is one market that will
experience substantial growth. Today, several networking
solutions are being developed by industry alliances,
which have brought companies together to create home
networking options that represent all segments of the
technology market. With an increasingly tech-savvy
population using multiple appliances, users will demand
a way to organize the mass of information stored on
their computing and household devices, and as the
technology continues to advance, more devices will be
developed that help people add practicality, leisure,
and efficiency to their lives. With the broad adoption
of home networking, we all may be living in that
futuristic home where our appliances are part of the
family in the near future.
Alberto Mantovani is HomePlug
president and division director, Small Business and
Consumer Networking with Conexant
Systems, Inc.'s Personal Computing Division. The
HomePlug Powerline Alliance (HomePlug) is a
not-for-profit corporation formed to provide a forum for
the creation of open specifications for high speed home
powerline networking products and
services. Conexant is a worldwide supplier of
semiconductor solutions for the personal networking
market.
From ADSL To
Cable To Wireless: My Five Years of Home Networking
BY TOM FLANAGAN
It was the fall of 1995. It came looking like my normal
Bell Atlantic phone bill. My wife opened it and passed it to
me saying that I might be interested. I am rarely interested
in bills but this was not just a bill. I was being invited
to participate in Bell Atlantic's trial for a new service
called ADSL. I felt as if I had won the lottery. I quickly
signed up and in a matter of weeks I was surfing the
Internet from home with what was in effect my own private T1
line. I had 1.5Mbps coming to my home and 256Kbps leaving.
The cost for all of this was $29.95 per month plus $25.00
monthly to CAIS, the local ISP who was participating with
Bell Atlantic in the trial.
The data service worked wonderfully right from the start
but I had a problem with my POTS telephone service. The
levels on the phone would drop if the ADSL modem was on. Of
course it was always on. Aside from the speed that's the
point of broadband service. It took three visits by Bell
Atlantic to rectify the problem including one visit where
new wires were installed between the NID and the modem. (The
NID is the little gray box outside the house where the phone
wires terminate.) It seems that there was a second pair of
wires attached to my main telephone line in the NID. The
extra set of wires ran inside my 35-year-old house but were
not connected to anything. They had the effect of adding a
big antenna to the phone line. Once the offending wires were
removed my DSL service was everything I could have hoped
for.
I learned a lot about the DSL configuration from the
service technicians who visited me. The trial configuration
used a pair of Westell modems, one at my house and one at
the Central Office. At the CO was an Ethernet hub that
interconnected the other ADSL modems used for the trial with
a router. The router had a T3 link to CAIS who, as a TIER 1
ISP, was OC3 connected directly to the Internet backbone. I
figured this was the most direct connection to the Internet
that any individual could get.
Being inquisitive I began experimenting with the DSL
service. My first step was to add an Ethernet hub to the
Westell modem. I began attaching additional PCs and
discovered there appeared to be no limit to the number of
PCs I could activate. I enabled Novell Networking (IPX) on
one PC and began to see file servers. I am not sure if
others in the trial or by Bell Atlantic were running them
itself. The lack of security was obvious. I resisted the
urge to become the neighborhood ISP and reverted to using a
single PC on the network.
All went well with my ADSL service for the next two
years. Then we moved. The primary determinant in selecting
our new home was the school district but the fact that we
were able to keep the same Central Office was a real plus
for me since it led me to believe we could maintain our ADSL
link. Not true. Since we were buying a new house the actual
distance could not be calculated until the neighborhood was
built out. Our new house was 14,400 feet from the CO while
our old house was 11,000 feet away. Bell Atlantic cut off
ADSL service at 12,000 feet. We reverted to the dark ages of
networking and began to access the Internet using a V.90
dial modem.
I began a monthly e-mail campaign to my local Cable
Company begging for cable modem service. COX Communications
was rolling out cable modem service all around me, yet it
never got into my neighborhood. This went on for 2 years.
Once again relief came in the mail. Telocity, an alternative
to Bell Atlantic as a DSL provider was more liberal in its
DSL reach. Telocity said they could give me DSL service up
to 18,000 feet from the CO. I signed up and began the six to
eight week wait for the service to be turned up.
The very next day COX Cable called and said that Cable
modem service was now available in my neighborhood. It is as
if they were listening to my conversations with Telocity.
Cox could install in 3 days so I cancelled the order for DSL
with Telocity and signed up for Cable Modem. I now live in
one of the few neighborhoods in the world where there is a
choice of broadband services.
The cable installers took about an hour to run the cable
into my home office and hook up the modem to my PC. Things
were starting to look good, but for some reason they were
unable to get the modem to sync up with the network. This
problem took 3 weeks and 5 truck rolls to resolve. The
problem it turned out was that a chip in the neighborhood
pedestal that enables upstream transmission on the cable
network had been installed upside down. At least that is
what they told me. Finally, after a 2-year hiatus we were
back on-line.
My kids were now in their mid teens. Internet access for
homework (right, that is what they are always doing!),
Napster, and Instant Messenger took on high importance. We
now had multiple PCs and it was time for a home network. I
really wanted to use wireless technology since my company is
considering using wireless nodes for laptop users at our new
building. I didn't want to pay too much of a premium since I
was spending family money for this. I considered Ethernet
and HPNA but after paying $1,000 to have speaker wires
installed for my TV surround sound system I was not about to
use anything that involved new wiring. Both of these
technologies offer deceptively low cost interface cards and
home gateway routers, but if you assume over $100 per node
to get the wires where you want them, both Ethernet and HPNA
lose their attractiveness. In late February several new
wireless home gateway products appeared on the market. There
was a resulting price drop that made wireless a "no
brainer" when compared to the alternatives.
I choose to use wireless products from 3Com for several
reasons. First, with a $50.00 rebate they were priced
competitively with all the other products on the market.
Second, their wireless home gateway included a three-port
Ethernet switch and a packet filtering firewall. During my
research I discovered that many of the home products claim
firewall capability but what they really offer is the
ability to hide your home IP addressees behind their NAT
(Network Address Translation) feature. The Ethernet ports
allowed me to connect my office PC directly to the gateway.
Remember that it was already connected to the cable modem
using Ethernet. It also allowed me to bring the laptop up
using Ethernet before trying anything wirelessly. I now had
two PCs sharing the cable modem's broadband connection to
the Internet. I verified that the VPN feature allowed me to
connect to my office network. My connection via the home
network and VPN was nearly as fast as the LAN at the office.
Straight Internet connections in fact were much faster. The
extra layer of VPN encryption and a slow VPN server at the
office reduced my VPN connect speed. Despite this speed
reduction for the first time I felt I had the performance
that would allow me to work from home. I now stay home four
out of five days saving me an 80-mile round trip commute.
Sweet!
I was now ready to tackle setting up the wireless
connections. To my surprise this was a non-event. To keep
things simple I decided to set up everything using the
default settings. This included the wireless network
interface cards in my laptop and a second desktop PC and the
wireless settings in the gateway. Everything worked
flawlessly right out of the box. The fact that all the
networking equipment was manufactured by 3Com likely
facilitated this.
The next step was to install Microsoft networking to
enable printer sharing and file sharing among the home PCs.
I started with the newest PC, which runs Windows ME. The
networking wizard walked me through the set-up and at the
end suggested I make a disk that would auto configure
additional PCs on the home net. Skeptically I did this. I
then took this disk to my laptop and desktop, which were
both running Windows 98. The configuration Wizard copied the
appropriate settings to each machine and I was ready to go.
All that remained was to identify the resources (folders and
printers) that were to be shared. Within an hour of the
start I was printing from my laptop via the wireless network
using printers attached to my Windows ME PC. Cool!
Over the next few weeks I read several articles about
wireless security that caused me to rethink my decision to
accept the default settings. I changed the internal name of
my wireless network and turned on encryption. I also looked
at my firewall log, which showed no intrusion attempts.
Over all, my home networking experience has been
excellent. I have had to reboot the PCs on occasion in order
to restore printer connections. I have also had a few
outages on the cable network but these have never lasted
more than a few minutes and are similar to my experience
with DSL. In closing I would say that the choice between
Cable and DSL is a toss-up in terms of performance and in my
area the pricing is the same. The bottom line is get
broadband however you can. In my opinion wireless is the
only way to do home networking. It is fast, convenient,
secure, easy to install, and cost effective. It also allows
me to work from my porch and patio on these beautiful
Virginia spring days. What could be better?
Tom Flanagan is Director of Business Development at Telogy
Networks, a Texas Instruments company, which develops
integrated silicon and software solutions leveraging TI's
market leading DSPs and Telogy Software products for Voice,
Fax, and Data over IP.