Which discard digits instruction removes all digits prior to the North American Numbering Plan portion of the route pattern?
A. PreDot
B. PreAt
C. Pre
D. PreNANP
Which discard digits instruction removes all digits prior to the North American Numbering Plan portion of the route pattern?
A. PreDot
B. PreAt
C. Pre
D. PreNANP
The correct answer is B.
PreDot – Removes access code
PreAt – Removes all digits that are in front of a valid numbering plan pattern
Reference:
https://community.cisco.com/t5/collaboration-voice-and-video/cucm-digit-manipulation-amp-call-flow/ta-p/3113389: