automatically send DTMF in call menu

VERSION: 2.14-583a
BUILD: 161226-2224
I would like to make the system send a "1" after 5 seconds if the caller did not select any option in the call menu. My guess would be using the Custom Dialplan Entry of the Call Menu but I'm not sure how to proceed.
The goal is to offer the caller the option of going in the english ingroup (option 9 in my call menu) instead of the french one (option 1).
Would there be a better way to achieve this ?
BUILD: 161226-2224
I would like to make the system send a "1" after 5 seconds if the caller did not select any option in the call menu. My guess would be using the Custom Dialplan Entry of the Call Menu but I'm not sure how to proceed.
The goal is to offer the caller the option of going in the english ingroup (option 9 in my call menu) instead of the french one (option 1).
Would there be a better way to achieve this ?