Learn how to configure a route pattern in Cisco Unified Communications Manager (UCM) to allow calls to specific number patterns like “1306, 1316, 1326, 13*6, 13#6” while blocking others. Discover the correct regex syntax for Cisco UCM route patterns.
Table of Contents
Question
Refer to the exhibit.
Which route pattern can the Cisco UCM administrator apply to the configuration to allow calls to “1306, 1316, 1326, 13*6, 13#6” only?
A. 13[^3-9]6
B. 13[25-8]6
C. 13!#
D. 13XX
Answer
The correct route pattern to allow calls only to the numbers “1306, 1316, 1326, 13*6, 13#6” is:
A. 13[^3-9]6
Explanation
This uses bracket notation to specify the allowed characters in that position:
- 0, 1, 2 match those specific digits
- * and # match those literal characters
- 6 at the end matches a literal 6
The ^ used inside brackets negates the match, so [^3-9] would match any single character except 3 through 9. That is not the correct syntax here.
XX is used in route patterns to match any two digits, but that would be too broad and allow numbers beyond the specified set.
! and # have special meanings outside of brackets in route patterns, but enclosing them in brackets here escapes those meanings and matches them literally.
So in summary, 13[0126*#]6 is the route pattern that exactly matches the given set of allowed numbers, without allowing any additional numbers.
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