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To: Kent Rattey who wrote (72181)5/23/2000 9:21:00 AM
From: Ruffian  Read Replies (3) | Respond to of 152472
 
AT&T's 'Debacle'? Look Again

George Gilder and Ralph Vigilante's May 1 Manager's Journal, "AT&T's
Wireless Debacle," purported to be a critique of AT&T's wireless
technology from an industry pundit, but it ignored Mr. Gilder's personal,
major financial interest in Qualcomm, the company that promotes the
technology the authors prefer. In skewering TDMA, a wireless technology
used by several hundred million mobile telephone customers world-wide,
Mr. Gilder committed misstatements of fact, misunderstandings of
technology, and made gratuitous, irrelevant and ultimately mean-spirited ad
hominem references (both pro and con).

Let's look at the more obvious distortions: The
Time Division Multiple Access technology Mr.
Gilder derides is the basis of mobile telephone
and data services that, world-wide, support
more than 300 million customers; subscribers
to such services are increasing by 25% a year.
Moribund? Hardly. The TDMA family of technologies, which includes the
variant of TDMA known as GSM (Global System for Mobile), is the
dominant technology by a factor of more than 5 to 1 in this explosively
growing mobile communications market. AT&T's variant of TDMA
dominates in North and South America; GSM dominates in Europe and
much of the rest of the world. At current growth rates, there will be more
than half a billion customers world-wide enjoying service based on time
division technologies by 2004. This is 5 to 10 times greater than the likely
global penetration of CDMA (Code Division Multiple Access) technology.
Despite years of development, promotion, and claimed advantages for
superiority, the CDMA technology Mr. Gilder champions has not become
the market leader, and is not even the second most popular technology
world-wide.

In fact, the High Data Rate technology Mr. Gilder favors is not even a pure
CDMA technology. It uses time division multiplexing to achieve those
predicted high speeds. So to focus on whether TDMA or CDMA is
superior is pointless: the best of third-generation systems will use a
combination of technical magic to wring the most out of available radio
frequencies and deliver services that are better than the ones we have
today. AT&T and many other wireless companies have strategies -- and a
deep technical storehouse of techniques -- to do just that.

Mr. Gilder's essay misses the fundamental point that soon, wireless
services based on TDMA will inter-operate. TDMA and GSM vendors
and service carriers have put immediate self interest aside and agreed to
converge on a new technology called EDGE (Enhanced Data for GSM
Evolution), which promises seamless operation of both voice and data
systems over much of the globe. Customers will soon be able to have a
single wireless handset or other mobile device that will work everywhere.
And EDGE services will not depend on any new wireless spectrum so the
costs for this new service can be kept very reasonable.

In contrast to what Mr. Gilder would have you believe, the technology for
EDGE is ready, the global standards for it have been worked out, and
orders for EDGE equipment have been placed with wireless vendors.
EDGE-based services will begin to roll out in markets next year, a year
earlier than Mr. Gilder states. As a result, those half billion TDMA
customers will enjoy seamless services globally by the middle of this
decade. EDGE customers will enjoy spectacular, always-on 384 kilobit
per second data services that approach the performance levels associated
today with fixed broadband technologies like cable, DSL and our own
fixed wireless service.

Of the major, international, mobile equipment vendors, Qualcomm is alone
in not supporting EDGE and the global convergence that is beginning to
happen in wireless. Qualcomm is set to miss out on the EDGE opportunity
in the same way they missed the second generation TDMA technology
known as GSM.

As a result, CDMA customers may have to make do with a patchwork of
incompatible services globally. If you follow Mr. Gilder's view to its logical
conclusion, the U.S. would not become the leader of wireless technology
world-wide but an information island, using over-engineered and overly
expensive technology, based on standards unique to the U.S.

Thus, the U.S. CDMA industry -- and Qualcomm -- are swimming
against the tide of recent history. If nothing else, the Internet phenomenon
has demonstrated the necessity of having a single world-wide standard for
new communication services. But CDMA is not converging on a single
world-wide standard. There are several incompatible CDMA standards,
including one for the U.S. and one for Europe and the rest of the world.
AT&T's stated plan, one which most familiar with the wireless industry
know, is to use the globally supported CDMA where and when it makes
technical and economic sense to do so. We have even designed our third
generation wireless networks to support global CDMA technology where
governments have made new wireless spectrum available. The CDMA
standard we have chosen not to support is a U.S.-only variant called
CDMA2000.

In the last analysis, arcane technology choices hardly matter to customers
who care about a superior service with the widest possible distribution at
the lowest cost. George Gilder admonishes us to "listen to the technology"
to find out what it is telling us. Unfortunately, when he listens, George
sometimes hears voices that are not there.

David Nagel
Chief Technology Officer
AT&T
Menlo Park, Calif.