The deaf and hard of hearing can still communicate with other people if given the facilities to do so. Video relay services is one of the options which can be taken for this. With VRS, a videophone and an interpreter act as conduit for the people in conversation. This setup may be used in call centers, hospitals, and other places.
For example, companies may give out a special phone number for deaf callers. They will be connected to the remote interpreter via video, and this interpreter will be the one to talk to customer service or technical support. Any concerns or questions will be relayed accordingly.
This is a great way to enable persons with disability to use consumer channels and allow them to receive the same service that others enjoy. They are also mandated by law in some places so companies using them can be assured of regulatory compliance.