Need the below listed files for Cisco CTI Server Message Protocol Version 21 (GED-188)
1. CTILink.h
2. CTIMsg.cpp
3. CTIMsg.H
4. ExpandedCallContext.h
5. ICMCommon.h
6. MSGELEM.CPP
7. MSGELEM.H
8. Any other source code files required for Protocol Version 21 and below