The ISO is the world's leading developer of International Standards.

Organization of current and retired telecommunications employees who have joined together to make your community a better place to live and work.

Telephone related history and information

Minnesota Telephone Association

Country and area codes

The Federal Communications Commission

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Enhanced 911 and 911 information

Time and date information around the world

Federal standard 1037C telecom glossary

Dictionary and search engine for computer and internet technology

Definitions from the technology online dictionary

International Alliance of Avaya Users