HCO (Hearing Carry Over)

From NENA Knowledge Base

HCO (Hearing Carry Over) is a method which utilizes both voice and text communications on the same call, allowing a person who has a speech disability to listen to the other party’s conversation and respond by typing via a TTY or other means of text communications.

Relevant NENA Documents
Note: To find and download the document, copy the document number (like NENA-STA-010) from below and search the NENA Standards and Documents page.

NENA-STA-037, NENA TTY/TDD Communications Standard Operating Procedure Model Recommendation