CLCOR ON Premises Call Control Practice Test 3 — 15 Questions

Question 1

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

Accepted Answer

Number to match. An Application Dial Rule in Cisco Unified Communications Manager requires a 'Number to match' (Option B), which is the dialed digit pattern (using wildcards like X, !, or \) that the rule evaluates against the called number. It also requires a 'Prefix to add' (Option D), which specifies the digits inserted in front of the matched number to transform it into the routable destination. These two fields form the core match-and-rewrite logic of the rule; other fields like the calling search space or numbering plan are optional attributes, not mandatory inputs. Option A is incorrect because a partition is not a required field of an Application Dial Rule — it is an optional attribute used for classification, not a mandatory configuration element. Option C is incorrect because SIP security profiles apply to SIP trunks or endpoints (device-level security), not to dial rule definitions. Option E is incorrect because a hardware transcoder is a media resource for codec conversion and has no role in dial rule configuration.

Answer

Partition assigned to the pattern.

Answer

A SIP security profile.

Answer

A hardware transcoder.

Question 2

A collaboration engineer is configuring a new Cisco Unified Communications Manager (CUCM) cluster with a SIP trunk to a Cisco Unified Border Element (CUBE) for PSTN connectivity. The engineer needs to ensure that outbound calls to the PSTN are routed correctly and that the calling party number is presented as the main office number for all calls. Which two configurations are required on the SIP trunk to achieve this? (Choose two.)

Accepted Answer

Configure the SIP trunk with a Route Group that includes the CUBE as the destination.. To route outbound calls to the CUBE, a Route Group must be created and associated with the SIP trunk, and a Route Pattern must point to that Route Group. To present the main office number, a calling party transformation pattern must be applied to the SIP trunk to rewrite the calling number. These two configurations are essential to meet the requirements.

Answer

Enable 'Redirecting Number IE Delivery - Outbound' on the SIP trunk.

Answer

Configure the SIP trunk with a 'Calling Search Space' that includes the PSTN partition.

Answer

Set the SIP trunk to 'Use System Default' for the Calling Party Selection field.

Question 3

A network administrator is setting up a new Cisco Unified Communications Manager (CUCM) cluster and needs to configure a route pattern to allow users to dial external numbers. The administrator wants to ensure that when a user dials a 10-digit number, the call is routed to the PSTN gateway. Which configuration element must be referenced by the route pattern to direct the call to the gateway?

Accepted Answer

Route Group. The route pattern must reference a Route Group to specify the gateway or trunk that will handle the call. The Route Group contains the list of gateways, and the route pattern uses it to route the call to the PSTN. Without a Route Group, the route pattern cannot direct the call anywhere.

Answer

Translation Pattern

Answer

Partition

Answer

Calling Search Space

Question 4

A collaboration engineer is diagnosing why an inbound PSTN call to a DID fails. The Cisco Unified Communications Manager (CUCM) gateway receives the call and sends it to CUCM via a SIP trunk. The gateway's incoming called-number is 5551234. The CUCM route pattern configured for inbound calls is 5551234 with a gateway/route list pointing to the correct trunk. However, the call fails with '404 Not Found'. Which configuration element should the engineer verify first?

Accepted Answer

The translation pattern that may be altering the incoming called number before route pattern lookup.. Translation patterns are applied before route pattern analysis in CUCM. When an inbound call's called number is modified by a translation pattern and no longer matches a configured route pattern, CUCM responds with 404 Not Found. The engineer should inspect translation patterns for the incoming number to ensure they are not altering digits incorrectly.

Answer

The SIP trunk's Outbound Calls > Calling Party Selection setting.

Answer

The gateway's POTS dial peer configuration on the voice gateway.

Answer

The SIP trunk's Inbound Calls > Significant Digits setting on the trunk's Calling Search Space.

Question 5

A company has a centralized CUCM cluster with a single Route Group containing two SIP trunks to the same ITSP. The administrator wants outbound PSTN calls to be distributed across both trunks while preventing any single trunk from being overwhelmed. Which Route Group distribution algorithm should be selected?

Accepted Answer

Balanced. The Balanced distribution algorithm in a Route Group chooses the trunk with the lowest current call count, which evenly spreads outbound calls and avoids overloading one SIP trunk. Top Down, Circular, and Longest Idle either do not consider load or are not valid Route Group algorithms. For a centralized cluster sending PSTN traffic over two ITSP trunks, Balanced provides the required dynamic load sharing.

Answer

Top Down

Answer

Circular

Answer

Longest Idle

Question 6

You are designing a Cisco Unified CM dial plan that must support both internal 4-digit dialing and external PSTN dialing with a 9 access code. You need to ensure that when a user dials 9 followed by an external number, the 9 is discarded and the call is routed to the appropriate gateway. Which two configuration elements must be used together to achieve this? (Choose two.)

Accepted Answer

A Route Group containing the gateway that will handle the PSTN call.. To discard the access code 9 and route the call to the PSTN, the Route Pattern must use the Discard Digits instruction PreDot. The Route Pattern also needs a Route List/Route Group to define the gateway. Together, these two elements strip the 9 and send the call out the correct gateway. Other elements like CSS are needed for access but are not the specific mechanisms for digit discard and routing.

Answer

A Calling Search Space that includes the partition containing the Route Pattern.

Answer

A Translation Pattern that strips the leading 9 before the call reaches the Route Pattern.

Answer

A SIP Profile configured with the 'Disable Early Media' option.

Question 7

An administrator is configuring a SIP trunk to an ITSP that requires inbound calls to be matched to a specific SIP trunk based on the calling number and the destination number. The ITSP sends calls with a From header containing the PSTN number and a Request-URI containing the DID. Which CUCM configuration element allows the administrator to match inbound SIP requests to a specific SIP trunk using these headers?

Accepted Answer

Incoming Calling Party Settings and Called Party Settings on the SIP Trunk. CUCM SIP trunks provide Incoming Calling Party Settings and Incoming Called Party Settings that evaluate the calling and called numbers in inbound SIP messages. These settings enable matching inbound requests to a specific trunk based on the From and Request-URI headers, which is exactly what the ITSP scenario requires. Other trunk-related profiles and configuration windows do not perform this header-based matching for inbound call association.

Answer

Inbound Calls section of the SIP Trunk Security Profile

Answer

SIP Trunk Configuration window with Inbound Call Routing settings

Answer

SIP Profile with Inbound Header Matching parameters

Question 8

A collaboration engineer is deploying a new CUCM cluster with a single publisher and two subscribers. The engineer must configure a Device Pool for IP phones in a branch office that will use a local gateway for PSTN access. Which two settings are configured directly within the Device Pool to support this branch deployment? (Choose two.)

Accepted Answer

Date/Time Group. A Device Pool in CUCM includes several settings that influence how devices operate, including Calling Search Space and Date/Time Group. The Calling Search Space determines which partitions and route patterns a device can use, so it must include the local gateway's partition for branch PSTN access. The Date/Time Group ensures correct local time for the branch. Other options like SRST Reference and Network Locale are also Device Pool settings but do not directly support PSTN routing.

Answer

Network Locale

Answer

Roaming Sensitive Settings

Answer

SRST Reference

Question 9

A collaboration administrator is configuring a new SIP trunk to a Cisco Unified Border Element (CUBE) for outbound PSTN calls. Which two actions are required on the CUCM SIP trunk to ensure that calls are routed correctly to CUBE? (Choose two.)

Accepted Answer

Assign a Route Group containing the SIP trunk to a Route List, and associate that Route List with a Route Pattern. To route outbound calls to CUBE, CUCM must have a SIP trunk with the correct destination address (CUBE's IP and port) and a routing configuration that directs calls to that trunk. The routing configuration involves a route group containing the trunk, a route list containing the route group, and a route pattern pointing to the route list. The other options are either related to video features, security, or inbound call permissions, none of which are required for basic outbound routing to CUBE.

Answer

Enable 'Allow Presentation Sharing using BFCP' on the SIP profile

Answer

Set the 'Calling Search Space' on the SIP trunk to include the PSTN partition

Answer

Configure the SIP trunk to use a 'Non-Secure' SIP security profile

Question 10

A user's phone is registered to CUCM and has a shared line appearance with another user. When the user presses the shared line button, the phone displays 'Not Ready' instead of placing a call. The administrator checks the DN configuration and sees that the Maximum Number of Calls and Busy Trigger values are set to the defaults. Which action will allow the line to place an outbound call?

Accepted Answer

Clear the active call on the shared line or wait for the remote party to disconnect, then press the line button again.. A shared line displays Not Ready when its Maximum Number of Calls or Busy Trigger limit is reached, meaning no additional calls can be presented or originated on that DN. Freeing an active call reduces the count and returns the line to a ready state. Adjusting parameters without reducing active calls does not restore outbound capability.

Answer

Change the Busy Trigger value to a number higher than the Maximum Number of Calls so the line can accept more calls.

Answer

Remove and re-add the shared line appearance from the phone's DN configuration to reset the line state.

Answer

Increase the Maximum Number of Calls on the DN to a value greater than the Busy Trigger.

Question 11

A user dials 5551234 from an IP Phone registered to Cisco Unified CM. The administrator has configured a translation pattern of 555XXXX with the called party transformation mask 91XXXXXXXXXX applied in the internal calling search space. What will be sent to the PSTN gateway?

Accepted Answer

915551234. The translation pattern matches the dialed digits and applies the called party transformation mask 91XXXXXXXXXX. The X wildcards represent the original digits, so the output is 91 followed by 5551234, resulting in 915551234. This is the number presented to the PSTN gateway, ensuring proper national dialing.

Answer

5551234

Answer

5551234 with the external phone number mask applied

Answer

15551234

Question 12

A Cisco Unified CM cluster has a route pattern of 9.@ with the 'Provide Outside Dial Tone' check box selected. A user dials 9, hears outside dial tone, then dials 14085551212. Which digit analysis behavior occurs?

Accepted Answer

The 9 is consumed as part of the pattern, and the remaining digits are sent after the interdigit timeout expires.. The route pattern 9.@ matches the leading 9 and any following digits. The 9 is consumed by the pattern and not sent to the gateway unless a called party transformation mask removes it. After the user dials the last digit, Unified CM waits for the interdigit timeout before routing the call to ensure no more digits are coming.

Answer

The 9 is stripped, and the call is routed immediately without waiting for the interdigit timeout.

Answer

The 9 is stripped and 14085551212 is sent immediately after the last digit is dialed.

Answer

The call is routed immediately after the 9 is dialed because the @ macro allows overlap sending.

Question 13

An administrator is configuring a Cisco Unified CM route group to provide redundancy for outbound PSTN calls. The route group contains two gateways: GW1 and GW2. Which two statements about the route group configuration are true? (Choose two.)

Accepted Answer

The distribution algorithm for a route group is configured on the route group configuration page and can be set to Top Down or Circular.. The order of gateways in a route group is used by the distribution algorithm, which can be set to Top Down or Circular on the route group configuration page. These settings control how gateways are selected for outbound calls, providing redundancy and load distribution.

Answer

A route group can contain gateways of different types, such as H.323 and SIP, but they must all point to the same remote destination.

Answer

If the first gateway in a route group is unreachable, Cisco Unified CM automatically removes it from the route group until it is manually re-added.

Answer

A route group can be associated with multiple route lists to provide different dial plan options.

Question 14

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?

Accepted Answer

The device is not assigned to a Device Pool with the correct Location configured for the new site.. Location-based Call Admission Control (CAC) in Cisco Unified Communications Manager (CUCM) uses the Location configured in the Device Pool to determine available bandwidth between sites. If a device roams to a different physical site but remains in a Device Pool with the original Location, the CAC will incorrectly calculate bandwidth as if the device is still at the original site, potentially blocking calls due to insufficient bandwidth. The most likely cause is that the device is not assigned to a Device Pool with the correct Location for the new site.

Answer

The Region setting in the Device Pool has a lower bitrate than the required codec.

Answer

The device must be re-registered to a local subscriber instead of the primary cluster.

Answer

The Calling Search Space is not configured to allow inter-site dialing.

Question 15

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?

Accepted Answer

System > Region Information > Region. In Cisco Unified Communications Manager, codec selection for calls between locations is controlled by regions. Regions define the codec used for calls between devices in different regions. To change the codec between two offices, you modify the region settings (System > Region Information > Region) and set the appropriate codec (e.g., G.729) for the region pair.

Answer

Device > Device Settings > Common Device Configuration

Answer

System > Device Pool

Answer

System > Location