Links
GENERAL TELECOM AND IT INFORMATION
FCC Homepage: http://www.fcc.gov/ccb/
Area Code and Exchange Finder: http://www.allareacodes.com/
Glossary (by ATIS): http://www.atis.org/glossary/default.aspx
PRODUCT, SERVICE AND SUPPLIER INFORMATION
AT&T Service Library: http://att.com
Sprint Rates, Terms and Conditions: http://sprint.com
Verizon Business Service Guide: http://verizonbusiness.com