What type of TRS service is particularly useful for senior citizens who have lost their hearing but can still speak?

Voice carry over (VCO) is particularly beneficial for individuals who are hard of hearing but can still speak. This service allows users to communicate verbally, while also receiving text messages from the other party. This is especially advantageous for senior citizens who may have lost their hearing abilities but retain their capability to talk, creating an efficient means of communication.

In this setup, the person using VCO speaks directly into the phone and hears responses from the person they are conversing with through a text display. This enables smoother conversations without having to rely solely on text communication, which may be difficult for some users.

Other options may not cater specifically to this group. Text Telecommunication Service primarily focuses on text-based communication and does not facilitate voice interaction. Video Relay Service, while excellent for those who use sign language or prefer visual communication, is not necessary for individuals who can still speak. Lastly, Hearing carry over (HCO) is designed for individuals who can hear but cannot speak, making it less suitable for seniors who have the ability to talk.