Dedicated video phones and PC multi-media systems offer the possibility of communicating visually. This would allow objects to be shown and guidance given, as well as allow signing to a deaf person.
With more elderly persons living alone, a simple to use video telephone can provide greater security and independence.

Higher bandwidth and better processing will permit lip reading as well as sign language communication which requires at least 25 frames per second.

Good lighting and contrast between the person and a plain background can improve visual clutter; this is particularly important for reading sign language.

Typefaces should be clear with high contrast backgrounds.

The ability to select larger type or special volume settings will be helpful for persons with visual or hearing impairments.

A keyboard permits the addiction of text messages which can be particularly useful for deaf persons.

Visual indicator for ringer, or a socket for external flashing light, is particularly important for hearing impaired users.

PC-based systems are particularly useful when integrated into an office network.

Visual and sound indication of line status will help persons with low vision or hearing impairments.