Disable comments by default on new pages and custom post types, while still giving you the ability to individually set them on a page or post basis.
no-page-commentfolder to your
Click 'No Page Comment' in the settings panel. A screen will display showing the following settings for posts, pages, attachments and any other custom post type installed on your blog:
Note: These settings set the default when creating a new page. Once a new post, page, or custom post type is added, comments can be enabled by modifying the Discussion settings for that page.
Also, there is now the option to globally enable/disable comments or pingbacks of a specific post type.