Technical information

Acronyms and Abbreviations
August 5, 2008 AT Commands Reference Manual Acr & Abbr-3
H HCO
Hearing Carry Over allows Speech Disabled callers who can hear well on the telephone to
listen directly to the person they are talking with. The Speech Disabled Relay user types
his or her part of the conversation on a TTY. A Communication Assistant (CA) then
speaks the typed conversation, word for word, to the standard telephone user.
Abbreviation Full Name
H