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ON Premises Call Control

Practise Cisco Implementing Cisco Collaboration Core Technologies (CLCOR, 350-801, v2.0 blueprint, CCNP Collaboration) (CLCOR) ON Premises Call Control practice questions — original exam-style scenarios with answer choices, explanations, and analysis of common mistakes.

80 questions20 easy36 medium24 hard

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What this domain covers

What to know about ON Premises Call Control

ON Premises Call Control questions test whether you can apply the concept in context, not just recognise a definition.

How the topic appears in realistic exam-style scenarios.

Which detail in the question changes the correct answer.

How to eliminate plausible but wrong options.

How to connect the question back to the wider exam objective.

Watch out for

Common ON Premises Call Control exam traps

  • Answering from memory before reading the full scenario.
  • Missing a constraint such as cost, availability, security, scope or command context.
  • Choosing a broad answer when the question asks for the most specific fix.
  • Ignoring why the wrong options are tempting.

Question index

All ON Premises Call Control questions (80)

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1

Which service must be running for a phone to receive its configuration file?

Easy
2

You are troubleshooting a scenario where internal calls between two sites are failing. The call fails immediately when dialed. What is the most effective way to verify that the Calling Search Space (CSS) has access to the destination partition?

Medium
3

A user reports that calls to an external PSTN number are failing. The trace shows a '403 Forbidden' response from the provider. Where in CUCM should the administrator investigate the outbound calling search space (CSS) settings?

Medium
4

You have a cluster with multiple nodes. You want to ensure that phones in the 'New York' office prioritize registration to a 'New York' subscriber. How do you implement this?

Hard
5

Which TWO of the following are valid types of Media Resources in CUCM?

Medium
6

Which field in a Route Pattern can be used to discard the first few digits of a dialed number before routing?

Medium
7

What is the function of 'Cisco Unified Reporting' in a CUCM environment?

Medium
8

When configuring a Device Pool in CUCM, which parameter is responsible for defining the set of codecs used between devices in different regions?

Easy
9

Where do you configure the time zone for a specific set of devices, such as those in a specific branch office?

Easy
10

You are migrating to a new SIP provider. You have a requirement to use 'Early Offer' for all calls on this trunk. Where is this configured?

Hard
11

Which CUCM service must be activated in Serviceability to allow for the use of the 'Cisco Extension Mobility' feature?

Easy
12

An administrator is configuring a new SIP trunk between CUCM and a CUBE. To ensure that CUCM correctly handles mid-call signaling updates such as hold/resume, which parameter in the SIP Profile should be verified?

Easy
13

What is the primary function of a 'Location' object in CUCM?

Medium
14

What is the result of using a '#' character at the end of a Route Pattern?

Medium
15

You have a requirement to play a custom announcement when a call is placed on hold. Where do you configure this?

Medium
16

Which file does an IP phone download first to obtain its configuration from the TFTP server?

Easy
17

Where do you define the default dial plan for a new CUCM cluster?

Easy
18

Which service must be active for CTI applications (like Cisco Finesse) to control phones?

Medium
19

Which THREE steps are involved in the 'Cisco Unified Communications Manager' disaster recovery process?

Hard
20

A branch office has a limited bandwidth link. You need to ensure that no more than 5 calls can be made across the WAN at once. What should you configure?

Hard
21

A user reports that their calls are failing when they roam to a different physical office site. You observe that the device is registered to the primary CUCM cluster but the Location-based CAC is blocking the call. What is the most likely cause?

Hard
22

Which component in the CUCM dial plan allows you to match a pattern and simultaneously transform it into a new number before the final route lookup?

Medium
23

Which feature allows you to group multiple gateways and route lists to provide load balancing and failover for outbound calls?

Medium
24

You are troubleshooting a scenario where internal calls between two offices are using the G.711 codec, but you want them to use G.729 to save bandwidth. Where should you change the codec setting?

Medium
25

What is the primary difference between a 'Route Pattern' and a 'Translation Pattern'?

Hard
26

Which TWO actions are required to successfully add a new media resource, such as a Conference Bridge, to CUCM?

Medium
27

In CUCM, what is the purpose of the 'Calling Search Space' (CSS)?

Easy
28

You are implementing a centralized dial plan. You have multiple sites, each with local PSTN gateways. How can you ensure that an emergency call from a specific site is always routed to the local PSTN gateway of that site?

Hard
29

You are implementing a SIP trunk to the PSTN. The carrier requires the 'Diversion' header for call forwarding scenarios. Where in CUCM do you configure this?

Hard
30

When a call is made to a destination that matches multiple partitions in a user's CSS, how does CUCM determine which pattern to use?

Medium
31

A user reports that they cannot hold an active call when the Media Resource Group List (MRGL) is configured with a specific Transcoder. The CUCM trace shows 'Allocation Failure'. What is the most likely cause?

Hard
32

What is the function of a 'Device Pool' in CUCM?

Easy
33

Which THREE types of media resources can be managed by an MRGL?

Easy
34

Which THREE of the following tasks are required to set up a basic SIP trunk in CUCM?

Hard
35

Which TWO items are required to configure an 'Application Dial Rule'?

Medium
36

Which CUCM feature allows an administrator to automatically register new phones using a pre-defined device template?

Easy
37

If a Translation Pattern is configured in CUCM, at what stage of the call processing does the digit manipulation occur?

Medium
38

Which TWO actions help secure the communication between the CUCM and the IP phones?

Medium
39

An administrator needs to restrict a group of phones from making long-distance calls. Which component of the CUCM dial plan should be modified to achieve this while maintaining internal dialing?

Hard
40

Which tool can be used to perform a bulk import of users and devices into CUCM?

Medium
41

Which menu path in CUCM Administration is used to configure the 'Cisco Unified Communications Manager Group'?

Easy
42

An administrator needs to ensure that internal calls between two sites are routed over an MTP-required SIP trunk, but the calls are failing due to codec mismatch. Which CUCM service parameter setting should be verified to allow the MTP to be inserted?

Medium
43

You are troubleshooting a one-way audio issue. The phone can register, but no audio is heard. What should you check first?

Hard
44

You have implemented 'Local Route Group' in your dial plan. What is the main advantage of using this instead of static Route Groups?

Hard
45

Which THREE of the following items are considered part of the 'Cisco Unified Communications Manager' infrastructure redundancy model?

Hard
46

You need to ensure that an encrypted call is established between two phones. Which component must be properly configured for 'Mixed Mode' to support secure media (SRTP)?

Medium
47

You are implementing a 'Call Hunt' sequence. You want to ensure that if no agent answers within 20 seconds, the call moves to the next member in the list. Which configuration object manages this timer?

Medium
48

Which TWO of the following fields are required when defining a Route Pattern?

Medium
49

When adding a new phone, what is the 'Device Name' parameter based on by default?

Easy
50

A user is unable to use their 'Speed Dial' button. What is the first thing you should verify?

Hard
51

You want to ensure that a specific device pool always uses a G.729 codec for inter-site calls. What is the most effective approach?

Hard
52

You are integrating an external voicemail system with CUCM. Which object is used to define the dialable number that users call to reach their voicemail box?

Hard
53

You need to implement redundancy for a remote site using Survivable Remote Site Telephony (SRST). Which parameter in the Device Pool ensures that the phones fail over to the local router during a CUCM WAN outage?

Hard
54

Which object acts as the primary container for a specific set of users in CUCM?

Easy
55

Which field in a Route Pattern determines how CUCM processes a call when a user dials a number that matches the pattern?

Easy
56

Which TWO configuration steps must be completed to ensure proper redundancy for a CUCM group? (Select TWO)

Medium
57

Which THREE components are part of the CUCM redundancy architecture?

Easy
58

You need to prevent certain internal users from making international calls while allowing them to dial local numbers. What is the most efficient way to implement this in CUCM?

Hard
59

You are configuring a 'Route List'. If all the 'Route Groups' within the list are busy, what is the default behavior of the CUCM call routing engine?

Medium
60

Which protocol is primarily used by CUCM to communicate with endpoints for registration and call control?

Medium
61

Which TWO of the following are valid methods to handle digit manipulation in CUCM?

Medium
62

Which component allows for automatic rerouting of a call if the primary gateway is busy or unreachable?

Medium
63

Which TWO features are managed by the 'Cisco Unified Serviceability' tool?

Medium
64

When using 'Call Pickup', how does a user pick up a call that is ringing on another phone in the same pickup group?

Hard
65

A user complains that they cannot see the 'Transfer' softkey on their phone during an active call. Where is the most appropriate place to check the softkey configuration?

Medium
66

What is the default behavior of CUCM when a phone is moved to a new site and registers with the local CUCM node, but the Device Pool is not updated?

Easy
67

What is the purpose of the 'Common Device Configuration' in CUCM?

Medium
68

Which component in CUCM is responsible for providing the necessary resources for conference calls, such as hardware or software-based conference bridges?

Easy
69

Which THREE of the following items can be defined within a Device Pool?

Hard
70

Which service in CUCM is responsible for handling the registration of SIP devices?

Medium
71

When designing a redundant CUCM deployment, which mechanism ensures that if a primary subscriber fails, phones automatically register to a secondary subscriber?

Medium
72

Which protocol is used by IP phones to register with the Cisco Unified Communications Manager?

Easy
73

Which THREE parameters are affected when you change the 'Location' of a device?

Hard
74

You are configuring a SIP trunk between CUCM and a CUBE. Which setting is critical to ensure that the SIP signaling is encrypted?

Medium
75

You are migrating a legacy PBX to CUCM. You need to normalize incoming caller IDs from the PSTN to E.164 format. Which tool is best suited for this at the gateway level?

Hard
76

How do you verify if a phone is registered to the primary CUCM subscriber?

Easy
77

You are designing a dial plan with a centralized PSTN egress. What must you configure to ensure that local extensions can be dialed directly across sites?

Hard
78

Which TWO settings in the SIP Profile are crucial for interworking with a PSTN gateway that does not support PRACK?

Medium
79

You want to implement 'Presence' so users can see the status of other users. Which service must be running on the IM and Presence server?

Medium
80

Which service, when enabled, allows CUCM to act as a recording server for calls?

Medium

Frequently asked questions

What does the ON Premises Call Control domain cover on the CLCOR exam?
ON Premises Call Control questions test whether you can apply the concept in context, not just recognise a definition.
How many questions are in this domain?
This page lists all 80 ON Premises Call Control questions in the CLCOR question bank. The actual exam draws from this domain proportionally to its weighting in the official exam blueprint.
What is the best way to practise this domain?
Start with a short focused session (10 questions) to identify gaps, then work through explanations. Repeat with a longer session once the weak areas feel solid.
Can I practise only ON Premises Call Control questions?
Yes — the session launcher on this page filters questions to this domain only. Choose any session length for inline explanations and scoring.
Cisco Implementing Cisco Collaboration Core Technologies (CLCOR, 350-801, v2.0 blueprint, CCNP Collaboration) (CLCOR) ON Premises Call Control Practice Questions