Retrieving additional data
When a call arrives, Pega Call receives CTI data gathered in the telephony system.To retrieve data from additional sources before a screen pop displays or call processing starts, override the activity pyPrefetch in your call class (for example, ChannelServices-Interaction-Call or PegaCA-CTI-Call). Pega Call executes pyPrefetch when a call arrives.
Add properties to the call class or create a separate object to hold the additional data.
Because the activity is executed from a service package (not the operator), ensure that your application ruleset is accessible to the service package that processes CTI events.