Once you call and hang up, to simulate the call not being answered, you will receive a text message sent to the number you called from.
The message and associated phone call are tracked in the CRM within the Unified Inbox. This brings all interactions with a customer, whether that is a phone call, text message, WhatsApp or email to a single place.
That way you can easily follow the conversation and ensure it is properly managed.
You can view and message your contacts.
Check the status of an opportunity.
Answer inbound calls
Make outbound calls
All of these actions will be recorded in the CRM.