A network engineer designs a new dial plan and wants to block a certain range of numbers (81X5X0 through 81X5X05). What is the most specific route pattern that can be configured to block only the numb

The correct answer is A. 813510[012345]. The range to block is 8135100 through 8135105 (six numbers ending in digits 0 through 5). Option A, '813510[012345]', uses a bracket expression to match exactly the last digit being 0, 1, 2, 3, 4, or 5 - covering precisely this range. Option B, '813510[12345]', omits 0 and would

Cisco Unified Communications Manager Dial Plan

Question

A network engineer designs a new dial plan and wants to block a certain range of numbers (81X5X0 through 81X5X05). What is the most specific route pattern that can be configured to block only the numbers in this range?

Options

A813510[012345]
B813510[12345]
C813510[^0-5]
D81XXXXX

How the community answered

(26 responses)

A
77% (20)
B
4% (1)
C
12% (3)
D
8% (2)

Explanation

The range to block is 8135100 through 8135105 (six numbers ending in digits 0 through 5). Option A, '813510[012345]', uses a bracket expression to match exactly the last digit being 0, 1, 2, 3, 4, or 5 - covering precisely this range. Option B, '813510[12345]', omits 0 and would miss 8135100. Option C, '813510[^0-5]', is a negation pattern that matches everything EXCEPT 0–5, which is the opposite of the intent. Option D, '81XXXXX', is far too broad and would match millions of numbers. Option A is the most specific pattern that covers only the desired range.

Topics

#CUCM Dial Plan#Route Patterns#Digit String Matching#Wildcards

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