|Description / Abstract
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|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
|Additional Supplemental Documents