Proposal for renaming clause 6
Currently clause 6 is titled "ICT with two-way voice communication". This implies that the requirements within clause 6 are not applicable to interpersonal communication services that do not have voice as one of the communication means.
Although in practice almost all services that incorporate RTT and/or video for sign language communication also include voice, many of the RTT and video communication requirements apply equally to any services that might not include voice. To avoid any confusions about the scope of applicability, a better title for clause 6 might be:
"ICT with interpersonal communication capabilities"
which aligns well with the clause 7 title "ICT with video capabilities"