📄 rfc1259.txt
字号:
At the same time as the NREN is being debated and developed,
telephone companies continue to push at the limits imposed on them by
the "Modification of Final Judgment" (MFJ) of divestiture, the 1982
anti-trust agreement which split up the Bell system. (14) Under
pressure from the D.C. Court of Appeals, Judge Greene recently lifted
the information services restrictions on the BOCs -- despite the
competitive tension between the telephone companies, cable TV
carriers, and newspapers. Thus, in the next year or so, Congress may
well be forced to define a new set of rules for regulated
telecommunications. (15) Like the AT&T divestiture decision, this
would represent a fundamental shift in national policy with enormous
and unpredictable consequences.
Many consumer and industry groups are concerned that as the MFJ
restrictions are lifted, the RBOCs will come to dominate the design
of the emerging National Public Network, shaping it more to
accommodate their business goals than the public interest. The
Communications Policy Forum, a coalition of public interest and
industry groups, has recently begun to consider what kinds of
safeguards will be needed to maintain a competitive information
services market that allows RBOC participation. The role that the
RBOCs come to play in the nation's telecommunications infrastructure
is, of course, an issue that must be carefully considered on its own.
But in this context, the NREN represents a critical opportunity to
create a model for what a public network has to offer, free from
commercial pressures.
With all of the uncertainty that surrounds the RBOCs entry into the
information services market, we should use the NREN to learn how to
develop a network environment where competitive entry is easy enough
that the RBOCs opportunity to engage in anti-competitive behavior
would be minimized. There is evidence that the RBOCs are resisting
attempts to transform the public telephone system into a truly open
public network (16) notwithstanding the FCCs stated intention do
implement Open Network Architecture. (17) But since the NREN
standards and procedures can be designed away from the dominance of
the RBOCs, a fully open network design is within reach. In this
sense the NREN can be a test-bed for "safeguards" against market
abuse just as it is a test ground for new technical standards and
innovative network applications.
Kapor [Page 10]
RFC 1259 Building The Open Road September 1991
An open platform network model carrier from the NREN to the National
Public Network would actually make some MFJ restrictions less
necessary. Phone companies were originally prohibited from being
information providers because their bottleneck control over the local
exchange hubs gives them an unfair advantage. But on a network in
which the local switch is open to information providers -- because
the platform itself is so rich and well-designed -- creativity and
quality triumph over monopoly power. Instead of restricting
information providers, the National Public Network developers should
encourage the entry of as many new parties as possible. Just as
personal computer companies started in garages and attics, so will
tomorrow's information entrepreneurs, if we give them a chance.
Their prototypes today, small computer networks, electronic
newsletters, and chat lines, are among the most vibrant and
imaginative "publishers" in the world.
III. Encourage Pricing for Universal Access
Everyone agrees in the abstract with universal service -- the idea
that any individual who wishes should be able to connect to a
National Public Network. But that's only a platitude unless
accompanied by an inclusive pricing plan.
The importance of extending universal access to information and
communication resources has been widely recognized:
In light of the possibilities for new service offerings by the
21st century, as well as the growing importance of
telecommunications and information services to US economic and
social development, limiting our concept of universal service to
the narrow provision of basic voice telephone service no longer
services the public interest. Added to universal basic telephone
service should be the broader concept of universal opportunity to
access these new technologies and applications. (18)
The problem of disparate access to information resources has been
recognized in other telecommunications arenas as well. Congressman
Edward Markey (D-Mass.), Chairman of the Subcommittee of
Telecommunications and Finance of the House Energy and Commerce
Committee warns that:
[i]nformation services are beginning to proliferate. The
challenge before us is how to make them available swiftly to the
largest number of Americans at costs which don't divide the
society into information haves and havenots and in a manner which
does not compromise our adherence to the long-cherished principles
of diversity, competition and common carriage. (19)
Kapor [Page 11]
RFC 1259 Building The Open Road September 1991
To address this problem in the long-term, there is legislation now
pending which would broaden the guarantee of universal phone service
to universal access to advanced telecommunications services. Senator
Burns has proposed that the universal service guarantee statement in
the Communications Act of 1934 should be amended to include access to
a nation-wide, advanced, interactive, interoperable, broadband
communications system available to all people, businesses,
services, organizations, and households..." (20)
In the near term, the NREN can serve as a laboratory for testing a
variety of pricing and access schemes in order to determine how best
to bring basic network services to large numbers of users. The NREN
platform should facilitate the offering of fee-based services for
individuals.
Cable TV is one good model: joining a service requires an investment
of $100 for a TV set, which 99% of households already own, about $50
for a cable hookup, and perhaps $15 per month in basic service.
Anything beyond that, like premium movie channels or pay-per-events
is available at extra cost. Similarly, a carrier providing connection
to the mature National Public Network might charge a one-time startup
fee and then a low fixed monthly rate for access to basic services,
which would include a voice telephone capability.
Because regulators are concerned about any telephone service that
might cause the price of basic voice service to rise, they are
unwilling to approve new services which don't immediately recover
their own costs. They are concerned that any deficit will be passed
on to consumers in the form of higher charges for standard services.
As a result, telephone companies tend to be very conservative in
estimating the demand for new services. Prices for new services turn
out to be much higher than what would be required for universal
digital service. This is a kind of catch-22, in which lower prices
won't be set until demand goes up, but demand will never go up if
prices aren't low enough.
Open architecture could help phone companies offer lower rates for
digital services. If opportunities and incentives exist for
information entrepreneurs, they will create the services which will
stimulate demand, increase volume, and create more revenue-generating
traffic for the carriers. In a competitive market, with higher
volumes, lower prices follow.
Kapor [Page 12]
RFC 1259 Building The Open Road September 1991
IV. Make the Network Simple to Use
The ideal means of accessing the NPN will not be a personal computer
as we know it today, but a much simpler, streamlined information
appliance - a hybrid of the telephone and the computer.
"Transparency" is the Holy Grail of software designers. When a
program is perfectly transparent, people forget about the fact that
they are using a computer. The mechanics of the program no longer
intrude on their thoughts. The most successful computer programs are
nearly always transparent: a spreadsheet, for instance, is as self-
evident as a ledger page. Once users grasp a few concepts (like rows,
cells, and formula relationships), they can say to themselves,
"What's in cell A-6?" without feeling that they are using an alien
language.
Personal computer communications, by contrast, are practically
opaque. Users must be aware of baud rates, parity, duplex, and file
transfer protocols -- all of which a reasonably well-designed network
could handle for them. It's as if, every time you wanted to drive to
the store, you had to open up the hood and adjust the sparkplugs. On
most Internet systems, it's even worse; newcomers find themselves
confronting what John Perry Barlow calls a "savage user interface."
Messages bounce, conferencing commands are confusing, headers look
like gibberish, none of it is documented, and nobody seems to care.
The excitement about being part of an extended community quickly
vanishes. On a National Public Network, this invites failure. People
without the time to invest in learning arcane commands would simply
not participate. The network would become needlessly exclusionary.
Part of the NREN goal of "expand[ing] the number of researchers,
educators, and students with ... access to high performance computing
resources" (21) is to make all network applications easy-to-use. As
the experience of the personal computer industry has shown, the only
way to bring information resources to large numbers of people is with
simple, easy-to-learn tools. The NREN can be a place where various
approaches to user-friendly networks are tested and evaluated.
Technically trained people are not troglodytes; they approve of
human-oriented design, even as they manage to use the network today
without it. For years, leaders within the Internet community have
been taking steps to improve ease of use on the network. But the
training of the technical community as a whole has given them little
practice making their digital artifacts appropriate for non-technical
consumption. Nor are they often rewarded for doing so. To a phone
company engineer designing a new high-speed telephone switch, or to a
computer scientist pushing the limits of a data compression
algorithm, the notion of making electronic mail as simple as fax
Kapor [Page 13]
RFC 1259 Building The Open Road September 1991
machine may make sense, but it also feels like someone else's job.
Being technically minded themselves, they feel comfortable with the
specialized software they use and seldom empathize with the neophyte.
The result is a proliferation of arcane, clumsy tools in both
hardware and software, defended by the cognoscenti: "I use the "vi"
editor all the time -- why would anyone have trouble with it?"
If we have the vision and commitment to try this, the transformation
of the network frontier from wilderness to civilization need not
display the brutality of 19th century imperialism. As commercial
opportunities to offer applications and services develop,
entrepreneurs will discover that ease of use sells. The normal,
sometimes slow, play of competitive markets should cause industry to
commit the resources to serve the market by making access more
transparent. But at the start transparency will need deliberate
encouragement -- if only to overcome the inertia of old habits.
V. Develop Standards of Information Presentation
The National Public Network will need an integrated suite of high-
level standards for the exchange of richly formatted and structured
information, whether as text, graphics, sound, or moving images. Use
the NREN as a test-bed for a variety of information presentation and
exchange standards on the road towards an internationally-accepted
set of standards for the National Public Network.
Standards -- the internal language of networks -- are arranged in a
series of layers. The lower levels detail how the networks'
subterranean "wiring" and "plumbing" is managed. Well-developed sets
of lower-level standards such as TCP/IP are in wide use and continue
to be refined and extended, but these alone are not sufficient. The
uppermost layers contain specifications such as how text appears on
the screen and the components of which documents are composed. These
are the kinds of concerns which are directly relevant to users who
wish to communicate. Recently independent efforts to develop high-
level standards for document formats have begun, but these projects
are not yet being integrated into computer networks.
Today, for example, the only common standard for computer text is the
American Standard Code for Information Interchange (ASCII). But
ASCII is inadequate; it ignores fonts, type styles (like boldface and
italics), footnotes, headers, and other formats which people
regularly use. Each word processing program codes these formats
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -