Hello again!
I’m trying to understand what the CPN options are responsible for? I read the manual, it seems these parameters are related to phone number format, but still do not understand what exeactly they are responsible for.
Parameters of interest: CPNPlan, CPNPresentation, CPNScreening, CPNType.
Any ideas?
Look at OCS Reference manual or deployment guide, there’s a lot of great information about those options. 
https://docs.genesys.com/Documentation/OU/8.1.5/Dep/OCSOptionDescriptions
https://docs.genesys.com/Documentation/OU/8.1.5/Ref/CommunicationProtocols
Typically, it defines what’s to be display to the callee.
Extracted from Genesys Doc :
The Caller ID options for each Campaign for CPN (Calling Party Number) are:
CPNDigits
CPNPlan
CPNPresentation
CPNScreening
For more information, see the “Outbound Configuration Options" chapter in the Outbound Contact 8.1 Deployment Guide.