Telephony - Configure IVR (Voice menu) | Bitrix24 Telephony
Interactive voice response (IVR) is a technology that allows Bitrix24 Telephony and CRM to interact with your clients through dialpad input. The system plays the recorded message, your client dials a certain number and the system automatically routes the call.
Read more - https://helpdesk.bitrix24.com/open/9250617/