How does an engineer globalize routing for ingress calls coming from the PSTN to internal DNs?
A . At the PSTN gateway, put the calling number in PSTN format and the called number in DN format.
B . At Cisco Unified CM, put the calling number in E.164 format and the called number in PSTN format.
C . At the PSTN gateway, put the calling number in E.164 format and the called number in localized (DN) format.
D . At Cisco Unified Communications Manager, put the calling number in E.164 format and the called number in E.164 format.
Answer: D
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