listen = (e) => {
            const name = (e && e.detail) || '';
            if (name === s || !isUndefined(s)) {
              window.removeEventListener('storeLoaded', listen);
              clearInterval(time);
              resolve(true);
            }
          }
Registers a callback to be called when your phone receives a new call request.
@param callback - function - Callback function to be called upon a new call. returns a call object.
@returns {boolean}