I going to use the new exciting External Content Type feature to display a list of data from an external LOB system. The list is potentially long, so paging with filtering at the LOB system side is preferable. [http://msdn.microsoft.com/en-us/library/ee556392(office.14).aspx][1] implies that BCS might have some provisions for paging (PageNumber filter). But the documentation is yet incomplete. [Here is sample][2] how to do paging for IdEnumerator method for Search Crawler, but has no samples to paging with SPView. Anyone has some experience with BCS paging? 

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- How does BCS get to know the total number of items in the list?
- How does BCS pass paging parameters to the LOB system?
- How to make work SPView with BCS server-side paging and sorting?


  [1]: http://msdn.microsoft.com/en-us/library/ee556392(office.14).aspx
  [2]: http://developers.de/blogs/damir_dobric/archive/2008/01/08/bdc-app-for-web-service-with-paging.aspx