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Stupid Network
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"Looking for this article recently at David
Isenberg's site, we were surprised to find that the pointer to it was
broken. To help keep these memes on the Web, here's a copy.
Rise of the Stupid Network
Why the Intelligent Network was once a good idea,
but isn't anymore. One telephone company nerd's
odd perspective on the changing value proposition
by
David Isenberg -
isen@isen.com -
www.isen.com
INTRODUCTION:
OBSOLETE ASSUMPTIONS & ENDURING MENTAL MODELS
Design-by-assumption works as long as assumptions hold. Assumptions
are shortcuts to useful efficiencies, provided they are not violated.
The classic telephone company value proposition, embodied in today's
telephone network, holds:
that expensive, scarce infrastructure can be shared to offer
premium priced services,
that talk - the human voice - generates most of the traffic,
that circuit-switched calls are the "communications technologies"
that matter, and
that the telephone company is in control of its network.
Telephone companies still behave as if these assumptions hold despite:
up to several thousand-fold declines in key infrastructure costs
over the last two decades,
a 20 year double-digit annual growth rate in the volume of data
traffic, so that the volume of data traffic is now overtaking the
(also growing, but more slowly) volume of voice traffic,
the many different data types that now travel over the telephone
network (despite the fact that the network is not optimized for
all these data types),
the many different types of "communications technologies," from
television to Ethernet, that are not part of telephone network
architecture, and
the Internet, which, because it makes the details of network
operation irrelevant, is shifting control to the end user.
The Intelligent Network is a straight-line extension of the four
assumptions above - scarcity, voice, circuit switching, and contro"
....
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