You could redial on your cordless phone back in the 1980s.
You can also redial the last dialed number on your iPhone.  

Hope you enjoy this tip courtesy of the Mac Observer.
How to Use Redial on the iPhone
https://www.macobserver.com/tips/quick-tip/use-redial-iphone/?utm_source=macobserver&utm_medium=rss&utm_campaign=rss_everything