(f) For transmitted voice signals,
telecommunications products shall
provide a gain adjustable up to a
minimum of 20 dB. For incremental
volume control, at least one
intermediate step of 12 dB of gain
shall be provided.
(g) If the telecommunications p
allows a user to adjust the receive
volume, a function shall be provided
to automatically reset the volume to
the default level after every use.
(h) Where a telecommunications
product delivers output by an audio
transducer which is normally held up
to the ear, a means for effective
magnetic wireless coupling to hearing
technologies shall be provided.
(i) Interference to hearing
technologies (including hearing aids,
cochlear implants, and assistive
listening devices) shall be reduced to
the lowest possible level that allows a
user of hearing technologies to utilize
the telecommunications product.
(j) Products that transmit or conduct
information or communication, shall
pass through cross-manufacturer, non-
proprietary, industry-standard codes,
translation protocols, formats or other
information necessary to provide the
information or communication in a
usable format. Technologies which
use encoding, signal compression,
format transformation, or similar
techniques shall not remove
information needed for access or shall
restore it upon delivery.
(k)(1) Products which have
mechanically operated controls or
keys shall comply with the following:
Controls and Keys shall be tactilely
discernible without activating the
controls or keys.