问题
I want to create a custom element that sends DTMF according to my logic . I can file play .wav files of dtmf tones but there is a better solution i believe. How can i use vxml feature below to create an element for on call studio.Can you share a document or code block on how to do it?
来源：https://stackoverflow.com/questions/65658565/how-to-create-custom-send-dtmf-element-on-cvp-cisco