Later she recorded others such as Annie Sprinkle "talking sexy".
Phone sex is a conversation between two or more people on the phone where one or more of the individuals is describing the act of sex.
"After a period of time I started having full body orgasms that you would not believe.
What was incredible is the orgasms didn't involve my penis at all.
At that time independent phone sex was more dangerous, as Lee's movie portrays.
With the progress of technology it became more practical, convenient, and economical for providers to work out of their homes.