Links to the MSS What's New Documents for 6.2.1 and 6.3.0 releases
Find the links to the documentation in the following KM article:
For MSS 621 a document is attached to the article.
For MSS 630, Prod Mgmt provides a direct link to the actual What's New document for the 630 release:
https://docs.oracle.com/communications/E69835_01/index.htm
Regards,
Mits Tanikawa - Oracle