210-060 · Question #300
An engineer is configuring a new directory number in the Call Manager. Which field is responsible for incoming calls?
The correct answer is A. Route Partition. The Route Partition assigned to a directory number controls which callers (via their Calling Search Space) can reach that number, making it the field governing incoming call accessibility.
Question
An engineer is configuring a new directory number in the Call Manager. Which field is responsible for incoming calls?
Options
- ARoute Partition
- BPrivate Line Automatic Ringdown
- CCalling Search Space
- DExternal Call Control Profile
How the community answered
(25 responses)- A88% (22)
- C4% (1)
- D8% (2)
Why each option
The Route Partition assigned to a directory number controls which callers (via their Calling Search Space) can reach that number, making it the field governing incoming call accessibility.
Route Partition is a logical grouping applied to a directory number (DN) that determines which Calling Search Spaces can reach it. When an incoming call targets a DN, CUCM checks whether the caller's CSS includes the DN's partition, directly controlling who can call in to that number.
Private Line Automatic Ringdown (PLAR) configures a phone to automatically dial a preconfigured number when it goes off-hook, and does not affect how incoming calls are handled for a DN.
Calling Search Space (CSS) is applied to a device or line to control outbound call routing - which destinations that device can reach - not which callers can reach the DN.
External Call Control Profile delegates routing decisions to an external HTTP-based application and is unrelated to partition-based incoming call control on a directory number.
Concept tested: Route Partition control of DN incoming call access
Source: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/12_5_1/systemConfig/cucm_b_system-configuration-guide-1251/cucm_m_partitions-and-calling-search-spaces.html
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