scope:

This standard defines measurement procedures and performance requirements for the handset generated audio band magnetic noise of wireline telephones. A telephone complies with this standard if it meets the requirements in this standard when manufactured and can be expected to continue to meet these requirements when properly used and maintained.

This standard addresses magnetic interference issues not covered by Part 68 of the FCC Rules and Regulations.

The basic accuracy and reproducibility of measurements made in accordance with this standard will depend primarily upon the accuracy of the test equipment used, the care with which the measurements are conducted, and the inherent stability of the device under test.

This standard proposes or references at least one measurement procedure for each technical requirement. However, these procedures are not exclusive. Any measurement procedure and equipment that can provide an identical result is considered valid.

This standard can be used to evaluate devices with analog interfaces and digital interfaces that will reproduce sine waves in the telephone's receiver. Examples include, but are not limited to: corded and cordless telephones, ISDN telephones, digital proprietary telephones, VoIP telephones, softphones running on personal computers, IEEE 802.11 telephones, USB telephony devices, DECT telephones, and Bluetooth^® telephony devices.

Devices with a digital interface that do not support sine wave test signals may require alternate test methods that are under study for inclusion in an addendum or future revision to this standard.