Responsibilities of the Configuration Control Board (CCB)

Would you please tell me the usual responsiblilities for a Configuration Control Board (CCB)? Does the project need to get an approval from CCB before creating a new baseline?

Basically the CCB is responsible for baselining specific configuration items: documents, designs, requirements, products, product components, etc. Once a configuration item has been baselined, the CCB is then responsible for reviewing and approving Change Requests to a baselined configuration item. If the CCB approves a change to a configuration item, after the item and other associated changes have been updated, then there is a new baseline version.