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Companies by Layer
Companies by Layer
The companies featured in this section are organised according to the
five layers within the Basic Layer Model,
namely:
These links are to individual company web
sites. In general, information is normally provided on areas such as company
history, company strategy, key personnel and stock market performance. A copy
of the latest Annual Report is often available on the site. On many sites there
is also an archive of official press releases and press articles pertaining to
the company in question.
Layer V: Applications (including contents packaging)
companies
AOL
Bloomberg
MSN
Newscorp
Reuters
Layer IV: Navigation and Middleware companies
Netscape
Yahoo
Layer III: End-To-End Connectivity companies
Altavista
Compuserve
EarthLink
FreeServe
Tiscali
T-Online
Wanadoo
Layer II: Network companies
Fixed-line: Incumbents
AT&T
BT
Deutsche Telekom
France
Telecom
NTT
Fixed-line: New entrants
Atlantic Telecom
Cable and Wireless
COLT
DDI
Energis
Global Crossing
Global Telesystems
Jazztel
Level 3 Communications
MCI WorldCom
Qwest Communications
Redstone
Thus
Viatel
Mobile operators
BT Cellnet
NTT DoCoMo
One2One
Orange
Vodafone AirTouch
Cable operators
Cable and Wireless Communications
NTL
Telewest Communications
Looking for a telecoms operator not featured above?
Then serarch on
The Telecoms Virtual
Library
Layer I: Equipment and Software companies
Alcatel
Cisco
Ericsson
Lucent
Motorola
NEC
Nokia
Nortel
Siemens
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