Global IP Network Methodology

Please read our Methodology Paper: The Quality of Internet Service: AT&T's Global IP Network Performance Measurements,
explaining the methods used to obtain the statistics on this site.

For further information on this subject please also
consult the IEEE Paper: Standardized Active Measurements on a Tier 1 IP Backbone,
IEEE Communications, June 2003, L. Ciavattone, A. Morton, G. Ramachandran.

Methodology Paper: The Quality of Internet Service:
AT&T's Global IP Network Performance Measurements

IEEE Paper: Standardized Active Measurements
on a Tier 1 IP Backbone

Acrobat Version (128 kb)

Acrobat Version (142 kb)

Word Version (79 kb)

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you can download it. On most browsers, you should be able to download the paper by right
clicking on the version you want and choosing 'Save Link As.'