Telecalling requires patience, persuasiveness, and persistence. It's also important to have excellent communication and typing skills, alongside the ability to perform in an office setting. Most importantly, telecalling is all about building repeat business through good customer relations.Telecalling requires patience, persuasiveness, and persistence. It's also important to have excellent communication and typing skills, alongside the ability to perform in an office setting. Most importantly, telecalling is all about building repeat business through good customer relations.