Question

A CCNP engineer is configuring globalized call routing on Cisco UCM. Inbound PSTN calls arrive on a SIP trunk with the calling number in national format (e.g., 4085551234 for a US number). The engineer wants the calling number displayed on phones as a +E.164 number so that missed-call directory entries can be dialed back directly. Which UCM configuration element should be applied on the inbound side to convert the incoming national calling number into +E.164 format?

Accepted Answer

A calling party transformation pattern applied via the trunk's Calling Party Transformation CSS

Answer

A called party transformation pattern applied to the trunk's Called Party Transformation CSS

Answer

An SRST reference configured on the device pool

Answer

The Local Route Group setting in the device pool