Extension Routing vs Custom-Context

Hello, everyone,
I am migrating a very old PBX to FreePBX.
The old PBX uses the “Custom-Context” module and I was wondering if it would be possible to use the “Extension Routing” module instead. I have read about it on the website but wanted to be sure that the functionality was the same. Can I proceed with the purchase?
Thank you

What are you using Custom Contexts to do? Extension routing features are as described in the wiki here:

Thank you for your reply @lgaetz .
Currently the ‘Custom-Context’ in the old PBX blocks calls from certain extensions (so that they can only receive), and allows other extensions to make outbound calls and calls between extensions.
From what you wrote to me, I think you can use the “Extension Routing” module.