A network administrator finds directory number 77555 in the partition. Which numbers can reach 77555 in this situation?

A. Only numbers in the partition can reach 77555.

C. Only internal directory numbers can reach 77555.

D. Directory number 77555 cannot be reached by any number.

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210-060 · Question #235

210-060 Question #235: Real Exam Question with Answer & Explanation

The correct answer is B: All numbers in every calling search space can reach 77555.. In Cisco Unified Communications Manager, the <none> partition is a special designation meaning the directory number belongs to no specific partition. When evaluating whether a calling device can reach a DN, CUCM checks the device's Calling Search Space (CSS), which is an ordered

Question

A network administrator finds directory number 77555 in the <none> partition. Which numbers can reach 77555 in this situation?

Options

AOnly numbers in the <none> partition can reach 77555.
BAll numbers in every calling search space can reach 77555.
COnly internal directory numbers can reach 77555.
DDirectory number 77555 cannot be reached by any number.

Explanation

In Cisco Unified Communications Manager, the <none> partition is a special designation meaning the directory number belongs to no specific partition. When evaluating whether a calling device can reach a DN, CUCM checks the device's Calling Search Space (CSS), which is an ordered list of partitions to search. The <none> partition is implicitly included in every CSS - it is universally visible regardless of what partitions a CSS contains. Therefore, any phone with any CSS (or even no CSS) can dial and reach a DN assigned to the <none> partition. This makes <none> a globally routable partition, which is why administrators should use it carefully - DNs placed here are reachable by all devices on the system.

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