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

410.6.5 HCO and VCO Support (Section-by-Section Analysis)

This section proposes that, where ICT provides real-time two-way voice communication, it must permit users to intermix speech with the use of real-time text. Such ICT would also be required to support modes that are compatible with Hearing Carry Over (HCO) and Voice Carry Over (VCO). This provision is collectively derived from existing 508 Standards § 1194.23(a) and 255 Guidelines § 1193.51(d), and is consistent with changes in technology over time from TTYs to real-time text functionality. It is particularly significant in preserving the use of HCO/VCO with evolving technology.