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Table of Contents

• Telecommunication - Telecom Information

• Telecommunications Discussion Group or Forum

• Area Code Listings

• Number Plan Area - NPA

• Exchange - NXX Codes

• NPANXX Codes

• Telecommunications Providers

• Local Exchange Carrier - LEC Listings

• Competitive Local Exchange Carrier - CLEC Listings

• Inter Exchange Carrier - IXC Listings

• Interexchange Carrier Listings

• Incumbent Local Exchange Carrer - ILEC Listings

• Competitive Access Provider - CAP Listings

• Telephone Company Listings

• Tariff Sources

• CLLI Code Sources

• Central Office Wire Centers

• Database Sources

• Mapping Software

• Wireless Carriers

• Magazines/Publications

• Telcom Jobs

• Used Telecom Equipment

• Buy and Sell Telecom Equipment

• Traffic Calculators, Erlang, Poisson