Key terms
REGEXP Rule - A regular expression that identifies all the SIP Response Codes returned from the Customer’s network device that will cause the Orchestrator to route advance to the next active trunk in the Trunk Group based on the configured Hunt Scheme. When there are no more active trunks available, a SIP XXX is sent toward the inbound call leg (i.e. the Origination Vendor Trunk Group).
Common regular expressions - The URL of a website where you can build and test regular expressions.