The Com-Power DB-568 is designed to analyze longitudinal balance of terminal telephone equipment that use digital service. Com-Power's Telecom Test System is designed to perform testing according to TIA-968 technical requirements for connection of terminal equipment to the telephone network (formerly FCC Part 68).

Administrative Council for Terminal Attachments and Industry Canada CS03.

This system contains most of the specialized circuitry needed to perform testing on analog modems and analog telephones. Generic third party equipment for may be needed to perform some of the tests.