Activity Code or Wrap Up Code = Drop Down List (No-Answer, Busy-Phone, Call-Back, Closed Lost, Closed Won, Do-Not-Call)
Ball krub, talk to K Noppakoon where to get asterisk callid and how to put it with a asterisk path and keep this path in a field on call module.
Add in the database as activity_code. This is more general meaning for sales process. In custom label, override Wrap Up Code. This is specific for call center sales.
The process to demonstrate is in the attached file. Skip the payment by credit card part -> it is not needed in this demo.