What does "organization’s set of standard processes" mean?
As I have indicated in previous blog entries, the first place you should always check for definition questions is the CMMI Glossary. You will find a comprehensive definition of the OSSP there. If after reading the definition you still have questions, then read the Organization Process Definition (OPD) Process Area which will put the OSSP into context. And if you still have unanswererd questions, please post them to this blog.