After Sort listing of resume, HR manager calls personally and ask some General information. If everything goes well then he will ask for face to face interview in office. Once management find out that you are the one who they looking for, immediately they will ask for for documents. Then on the behalf of your documents and profile they gonna send you joining letter. Before you go to join the company they need your entire original documents along with previous employer releasing letter to be verify. Simultaneously your joining process starts.