36 CFR Part 1194 - Proposed Information and Communication Technology (ICT) Standards and Guidelines NPRM

407.3.2 Alphabetic Keys.

Where provided, individual alphabetic keys shall be arranged in a QWERTY keyboard layout and the “F” and “J” keys shall be tactilely distinct from the other keys. Where the ICT provides an alphabetic overlay on numeric keys, the relationships between letters and digits shall conform to ITU-T Recommendation E.161 (incorporated by reference in Chapter 1).