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To: Apollo who wrote (6684)9/20/1999 3:15:00 PM
From: StockHawk  Respond to of 54805
 
A reference to CDMA in PC World 10/99.

pcworld.com

A few excerpts:

>Notebooks and
handhelds connecting via a digital cell phone can
simply dial up a standard ISP. If you're using a wireless
modem, however, you need a special data
account--using the CDPD (Cellular Digital Packet Data)
protocol--from your cellular service. The reason:
Whereas your cell phone connects to the public
telephone system (through which you then connect to
your ISP), wireless modems are designed to connect
only to wireless data networks.

Bell Atlantic, AT&T, GTE, and Ameritech all offer
CDPD accounts nationally; OmniPoint and others do
the same thing regionally.

Handhelds, pagers, and phones are another story.
AT&T's pioneering PocketNet service began delivering
Web-based content to CDPD cell phones last year. But
now major carriers including Sprint, GTE, and AT&T are
rolling out new data services for smart phones on their
digital networks, identified by such obscure acronyms
as CDMA, TDMA, and PCS1900. These networks
support more connections and will eventually move
data at higher speeds than today's CDPD-based
services. But initially the new services will run at a
poky 14.4 kbps, so from a speed standpoint,
CDPD--which can attain a maximum speed of 19.2
kbps--should remain attractive for now. Metricom's
coming service--Ricochet2, due to arrive next summer
in 12 cities--will reach 128 kbps. Cellular carriers say a
third-generation type of digital cellular service, due in or
after 2001, will improve bandwidth further.