210-060 · Question #235
A network administrator finds directory number 77555 in the <none> partition. Which numbers can reach 77555 in this situation?
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…
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.
How the community answered
(39 responses)- A3% (1)
- B82% (32)
- C5% (2)
- D10% (4)
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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