The good news is that you have already done your part by setting up the account. Now it is a matter of waiting out the orientation period on his end.
When an inmate arrives at a reception or classification center like CRC, they go through an intake process before any privileges open up. That means medical screening, psychological evaluation, classification interviews, and orientation to the facility's rules and expectations. Until that process is complete, phone access, visitation, and commissary are all on hold. The timeline is typically a few days to about a week depending on how the facility moves through its intake procedures and how many new arrivals are being processed at the same time.
Once orientation wraps up and he is assigned to his housing unit, the phones open up and he will be able to call. Make sure your number is set up correctly as the forwarding destination in your account so the first call goes through without any issues. It is worth double checking that now while you have time rather than troubleshooting it when he is trying to reach you.
A 25-year sentence is a long road and the early days at a reception center are among the hardest. He is being evaluated, classified, and processed while processing emotionally what he is facing. A letter sent to CRC right now ensures something is waiting for him when orientation ends. Having mail arrive in those first days tells him you are present and that the connection is intact even before the calls start coming.
The call is coming. Stay by the phone.