Implementing Cisco Advanced Call Control and Mobility Services (CLACCM) — Question 189

All users in a remote site in California cannot place PSTN calls by dialing 10 digits. The PSTN provider indicates that only +E164 numbers must be received. Which translation rule allows users to continue dialing 10 digits and send +E164 numbers toward the PSTN?

Answer options

• A. voice translation-rule 1 rule 1 // /\+1/
• B. voice translation-rule 1 rule 1 /\(.*\)/ /+1\1/
• C. voice translation-rule 1 rule 1 /\(.........$\)/ /+1\1/
• D. voice translation-rule 1 rule 1 /\(.........\)/ /+1/

Correct answer: C

Explanation

The correct answer, option C, uses a regex pattern that captures 10 digits and appends '+1' to it, thus converting it into the required +E164 format. Option A lacks the necessary regex to modify the input, while option B does not correctly match the 10 digits format, and option D does not ensure the end of the string is captured, making them all unsuitable for the requirement.