Below is a basic schematic for testing your modem at the INI (Indoor Network Interface). For detailed instructions please reference the INI Test FAQ. NOTE: If you live in a standard residential home please reference the NID Test FAQ and NID Test Schematic .

*Some modems (STH Test and Cayman Test) have the ability to test attainable line rate, relative bandwidth capacity, power, attenuation, and signal-to-noise ratio. If available, these measurements are the most accurate assessment of line quality.


Schematic by Andy Houtz
Andy Houtz DSL

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by Andy Houtz edited by FAQFixer
last modified: 2006-12-27 22:12:29