Hi Chester,
Are you looking for XACML which may contain a call instruction XML (CIXML) obligation attribute
that gives additional instructions for Unified CM to route the call or apply other special treatments. Please find the example in the following url - https://developer.cisco.com/site/collaboration/call-control/curri/learn/how-to/generate-call-routing-response/
Example for obligations include directives to play a particular greeting before connecting a call and diverting a call to a different extension than the one that was dialed.
An announcement specified by an [id] will be played to the caller when the "greeting identification=[id]" is sent in the obligations of the
Call Route Response. Unified CM has a set of pre-recorded announcements for all supported locales. You can add desired custom announcements to Unified CM. Remember to turn on the Media Streaming service, if you want custom announcements.
Thanks and Regards,
Geevarghese