in this video you showed how to make outbound call, you mentioned that we can use functions as well can like explain how can we do that https://cdn.discordapp.com/attachments/1211484481848873020/1251576865148112967/image.png?ex=666f1549&is=666dc3c9&hm=e6ae9cf1b6d76341e22f52bbc0b343fae70a70af5db145192a4c1280bb0f6f3e&