Where can I find the computer software that will allow me to check on seniors via the telephone?

Rberry asked...

Where can I find the computer software that will allow me to check on seniors via the telephone? I would like to be able to check on the seniors who live alone in my mobile home community. The software will send someone out to check on the senior if they do not answer a phone call. I would appreciate any info you can give me to assist in this project. Ralph