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Which service must be running for a phone to receive its configuration file?
TFTP is the protocol used to distribute config files.
Why this answer
The Cisco TFTP service provides the configuration files to endpoints upon registration.
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?
DNA allows you to simulate a call from a specific device to see if the partition is reachable.
Why this answer
The 'Dialed Number Analyzer' (DNA) tool in CUCM is designed specifically to trace the call routing logic based on CSS and partitions.
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?
This is the primary location for setting the CSS for the device.
Why this answer
The Device CSS or Line CSS determines the permissions for a specific device, and they must be configured to include the partition containing the route pattern.
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?
CM Groups control the registration order for devices.
Why this answer
By creating a specific CM Group with the New York subscribers in the preferred order and assigning it to the New York Device Pool.
Which TWO of the following are valid types of Media Resources in CUCM?
MOH servers are a type of media resource.
Why this answer
CUCM supports various media resources, including hardware and software based conference bridges and MOH servers.
Which field in a Route Pattern can be used to discard the first few digits of a dialed number before routing?
This field allows for stripping digits from the dial string.
Why this answer
The 'Discard Digits' field in the Route Pattern or Translation Pattern configuration allows you to strip prefix digits.
What is the function of 'Cisco Unified Reporting' in a CUCM environment?
This is the primary purpose of the reporting tool.
Why this answer
Cisco Unified Reporting allows administrators to generate reports on the cluster's health, database status, and configuration details.
When configuring a Device Pool in CUCM, which parameter is responsible for defining the set of codecs used between devices in different regions?
The Region setting defines the codec preference list for inter-region calls.
Why this answer
The Location and Region settings within a Device Pool define the bandwidth and codec policies between endpoints.
Where do you configure the time zone for a specific set of devices, such as those in a specific branch office?
Date/Time groups define the time zone settings.
Why this answer
The Date/Time Group is assigned to the Device Pool, which in turn is assigned to the device to set the local time.
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?
SIP profiles control the signaling offer/answer behavior.
Why this answer
The SIP Profile assigned to the SIP trunk is where you can toggle Early Offer/Delayed Offer settings.
Which CUCM service must be activated in Serviceability to allow for the use of the 'Cisco Extension Mobility' feature?
This is the required service to enable the feature.
Why this answer
The 'Cisco Extension Mobility' service must be activated in the 'Cisco Unified Serviceability' under 'Tools -> Service Activation'.
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?
Enabling this ensures CUCM handles reliable provisional responses.
Why this answer
The 'SIP Rel1XX Options' or 'Send PRACK' parameters are vital for robust SIP signaling, though 'SIP Rel1XX Options' specifically governs the handling of provisional responses.
What is the primary function of a 'Location' object in CUCM?
Locations are explicitly for bandwidth-based CAC.
Why this answer
Locations are used to identify the physical site for Call Admission Control (CAC) to limit bandwidth usage.
What is the result of using a '#' character at the end of a Route Pattern?
The '#' acts as an immediate send/terminate signal.
Why this answer
The '#' character acts as a terminator, allowing the call to be routed immediately without waiting for the inter-digit timeout.
You have a requirement to play a custom announcement when a call is placed on hold. Where do you configure this?
Audio source files are uploaded and referenced here.
Why this answer
Custom hold music is managed via 'Music on Hold (MoH) Server' settings and 'Audio Source' files uploaded to the CUCM.
Which file does an IP phone download first to obtain its configuration from the TFTP server?
This is the standard config file for Cisco IP phones.
Why this answer
IP phones download a configuration file (usually XML) specific to their MAC address (SEP[MAC].cnf.xml) from the TFTP server.
Where do you define the default dial plan for a new CUCM cluster?
The dial plan is constructed incrementally via patterns and partitions.
Why this answer
Dial plans are constructed using Route Patterns, Partitions, and CSS; there is no single 'default dial plan' switch.
Which service must be active for CTI applications (like Cisco Finesse) to control phones?
CTIManager is the interface for CTI apps.
Why this answer
The Cisco CTIManager service acts as the gateway between the CTI applications and the CallManager service.
Which THREE steps are involved in the 'Cisco Unified Communications Manager' disaster recovery process?
The backup is the foundation of the restore.
Why this answer
DRS (Disaster Recovery System) requires a backup, a clean install of the same version, and a restore operation.
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?
Location bandwidth limits directly control call concurrency.
Why this answer
By creating a Location and setting the audio bandwidth limit to 5 times the codec bandwidth (e.g., 5 * 80kbps = 400kbps), you can restrict the call volume.
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?
The device must be associated with a Device Pool that maps to the physical location of the site to calculate CAC correctly.
Why this answer
If a device roams, it may inherit a different Location assigned via the Device Pool. If the bandwidth limit between the new location and the destination is exceeded, the call will be rejected.
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?
Translation patterns are explicitly for digit transformation.
Why this answer
A Translation Pattern is used to change digits (e.g., adding an access code) before the call is routed to a final destination.
Which feature allows you to group multiple gateways and route lists to provide load balancing and failover for outbound calls?
A Route List provides the logic for failover and load balancing across Route Groups.
Why this answer
Route Groups contain a list of gateways, and Route Lists contain an ordered list of Route Groups to provide logical routing paths.
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?
The Region matrix allows you to define the maximum audio bit rate between specific regions.
Why this answer
The codec used between two devices is determined by the Region setting. You must update the Region matrix to specify G.729 between the two regions.
What is the primary difference between a 'Route Pattern' and a 'Translation Pattern'?
This correctly defines their distinct functional purposes.
Why this answer
A Route Pattern is used for routing to a destination, while a Translation Pattern is used for number manipulation during the call setup process.
Which TWO actions are required to successfully add a new media resource, such as a Conference Bridge, to CUCM?
The device must be defined in the system.
Why this answer
Adding a conference bridge requires both registering the device (or configuring the software bridge) and adding it to a Media Resource Group (MRG) for it to be usable.
In CUCM, what is the purpose of the 'Calling Search Space' (CSS)?
CSS provides access control to partitions.
Why this answer
The CSS is a list of partitions that a device or line can access to search for dialable patterns.
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?
This ensures the emergency call matches the local gateway route pattern specifically.
Why this answer
By using a combination of Partitions and CSS, you can ensure that the emergency route pattern is reachable by all, but the specific route pattern matches the local gateway's partition.
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?
SIP Profiles manage headers and signaling behavior for SIP trunks.
Why this answer
The SIP Profile is the correct location to enable the redirection of headers like Diversion, which is required for proper call forwarding identification.
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?
CUCM prioritizes the most specific pattern match.
Why this answer
CUCM selects the most specific match first. If multiple patterns are equally specific, it uses the first one found in the search space order.
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?
If a transcoder is not available in the assigned MRG, the call will fail to negotiate media.
Why this answer
Allocation failure usually indicates that the hardware transcoder resource is exhausted or unreachable, requiring a check of the MRGL priority and resource availability.
What is the function of a 'Device Pool' in CUCM?
Device pools centralize common configuration settings.
Why this answer
A Device Pool is a collection of device-specific configuration settings like location, date/time, and CM group, which can be applied to devices in bulk.
Which THREE types of media resources can be managed by an MRGL?
Used for codec matching.
Why this answer
Common media resources include music on hold, conference bridges, and transcoders, all of which are managed via MRGs and MRGLs.
Which THREE of the following tasks are required to set up a basic SIP trunk in CUCM?
Needed for security/authentication settings.
Why this answer
Setting up a SIP trunk requires a Security Profile, a SIP Profile, and the trunk device itself.
Which TWO items are required to configure an 'Application Dial Rule'?
The rule needs a pattern to trigger.
Why this answer
Application Dial Rules require a pattern match and a target string to transform numbers for directory lookups or click-to-call.
Which CUCM feature allows an administrator to automatically register new phones using a pre-defined device template?
Auto-registration enables quick deployment.
Why this answer
'Auto-Registration' allows phones to join the cluster without manual configuration if the 'Auto-Registration' range is configured in the CUCM system parameters.
If a Translation Pattern is configured in CUCM, at what stage of the call processing does the digit manipulation occur?
Translation patterns are processed before route patterns to modify digits prior to final routing.
Why this answer
Translation Patterns act as a mid-call processing step. When a digit string is dialed, CUCM checks for Translation Patterns before checking Route Patterns.
Which TWO actions help secure the communication between the CUCM and the IP phones?
These files establish trust between the phone and CUCM.
Why this answer
Securing phone communication involves both the certificate-based trust (ITL/CTL) and the configuration of encrypted profiles.
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?
Restricting access by modifying the CSS assigned to the device is the standard approach.
Why this answer
Partition and Calling Search Space (CSS) configuration is the primary method to restrict access to specific route patterns by assigning them to different partitions.
Which tool can be used to perform a bulk import of users and devices into CUCM?
BAT is used for bulk provisioning.
Why this answer
The Bulk Administration Tool (BAT) is the standard method for large-scale imports of devices, users, and dial plan objects.
Which menu path in CUCM Administration is used to configure the 'Cisco Unified Communications Manager Group'?
This is the correct navigation path.
Why this answer
The CM Group is found under 'System -> Cisco Unified Communications Manager Group'.
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?
Enabling MTP Required forces the CUCM to allocate an MTP resource for the call, resolving codec negotiation issues.
Why this answer
The 'MTP Required' checkbox on the SIP Trunk configuration page must be checked, and the Media Resource Group List (MRGL) must contain an MTP resource associated with the device pool.
You are troubleshooting a one-way audio issue. The phone can register, but no audio is heard. What should you check first?
Blocked media ports often cause one-way audio.
Why this answer
One-way audio is typically a network connectivity issue, such as blocked RTP ports or an incorrect Media Resource configuration.
You have implemented 'Local Route Group' in your dial plan. What is the main advantage of using this instead of static Route Groups?
It uses the Device Pool to select the local egress gateway dynamically.
Why this answer
Local Route Groups decouple the dial plan from the specific gateway, allowing the same route pattern to route via different local gateways based on the device's Device Pool.
Which THREE of the following items are considered part of the 'Cisco Unified Communications Manager' infrastructure redundancy model?
Groups redundant settings.
Why this answer
Redundancy is provided by the CM Group, Device Pool (which points to the CM Group), and the Subscriber node design.
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)?
The presence of a valid CTL/ITL file is mandatory for encrypted signaling and media.
Why this answer
To support SRTP, the CUCM must be in 'Mixed Mode', which is typically enabled via the 'utils ctl update' or 'utils security set' CLI commands.
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?
Line Groups contain the ring duration timer.
Why this answer
The 'Line Group' configuration allows you to set the 'No Answer Ring Duration' which dictates how long a phone rings before the call is routed to the next member.
Which TWO of the following fields are required when defining a Route Pattern?
The destination for the pattern match.
Why this answer
To define a route pattern, you must specify the pattern string itself and the destination (Gateway or Route List).
When adding a new phone, what is the 'Device Name' parameter based on by default?
The 'SEP' prefix plus the MAC address is the standard.
Why this answer
The device name is derived from the MAC address of the phone in the format 'SEP' followed by the MAC address.
A user is unable to use their 'Speed Dial' button. What is the first thing you should verify?
The template must have the speed dial feature enabled on the specific key.
Why this answer
Speed dials are assigned to specific buttons or configured via the User Options page; checking the 'Phone Button Template' is the first step in troubleshooting the button assignment.
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?
Region matrices control inter-site codec negotiation.
Why this answer
You define a Region for the site, another Region for the destination site, and then set the audio codec preference between those two regions to G.729.
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?
The VM Pilot number is what users dial to access their voicemail.
Why this answer
A Voicemail Pilot is the directory number that acts as the entry point to the voicemail application.
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?
The SRST Reference defines the IP address of the gateway to be used during an outage.
Why this answer
The 'SRST Reference' in the Device Pool points the IP phones to the local voice gateway to act as a backup call controller.
Which object acts as the primary container for a specific set of users in CUCM?
User groups are used to manage permissions and access.
Why this answer
While users are added to the system, they are often grouped into User Groups for permission management.
Which field in a Route Pattern determines how CUCM processes a call when a user dials a number that matches the pattern?
This field directs the matched call to the destination gateway or route list.
Why this answer
The 'Route Option' and 'Route Partition' fields work together, but the 'Gateway/Route List' field specifically tells CUCM where to send the call once the pattern is matched.
Which TWO configuration steps must be completed to ensure proper redundancy for a CUCM group? (Select TWO)
The device must inherit the group via the Device Pool.
Why this answer
To ensure CUCM redundancy, the Cisco Unified Communications Manager Group must be assigned to the Device Pool, and the Device Pool must be assigned to the phone.
Which THREE components are part of the CUCM redundancy architecture?
The primary mechanism for node failover.
Why this answer
Redundancy in CUCM is built on node groups, failover lists, and the publisher/subscriber model.
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?
By placing patterns in different partitions and assigning a restrictive CSS to the user, you control access.
Why this answer
Partitioning and Calling Search Spaces (CSS) are the standard mechanisms in CUCM to restrict dialing privileges based on the source of the call.
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?
CUCM returns a busy tone to the caller.
Why this answer
By default, if all gateways/trunks are busy, the call is rejected with a busy tone (or fast busy), unless 'Route Next Hop' or 'AAR' is configured.
Which protocol is primarily used by CUCM to communicate with endpoints for registration and call control?
SIP is the standard protocol used by modern Cisco IP phones.
Why this answer
SCCP (Skinny) or SIP are the two primary protocols used by endpoints to register with CUCM.
Which TWO of the following are valid methods to handle digit manipulation in CUCM?
A common method for mid-call digit manipulation.
Why this answer
Digit manipulation can be performed using Translation Patterns (in the dial plan) or transformation patterns (on the gateway).
Which component allows for automatic rerouting of a call if the primary gateway is busy or unreachable?
Route lists are designed for gateway failover.
Why this answer
Route Lists include a list of Route Groups, and if a gateway in a route group fails or is busy, the route list can fail over to the next group or gateway.
Which TWO features are managed by the 'Cisco Unified Serviceability' tool?
This is the primary tool for diagnostic logging.
Why this answer
Serviceability is used for service status and alarm management in the cluster.
When using 'Call Pickup', how does a user pick up a call that is ringing on another phone in the same pickup group?
The softkey triggers the feature to intercept the call.
Why this answer
Users initiate a call pickup by pressing the 'Pickup' softkey, which is configured on their phone button template.
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?
Softkey templates define the layout and visibility of softkeys.
Why this answer
Softkey Templates are assigned to devices (or device pools) to define which buttons appear during various call states.
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?
The phone uses the assigned device pool configuration regardless of its physical location.
Why this answer
If the device pool is not updated, the phone will continue to use its original Region and Location settings, potentially causing media issues if it crosses a WAN link.
What is the purpose of the 'Common Device Configuration' in CUCM?
This simplifies applying features to many phones.
Why this answer
Common Device Configuration allows you to group settings like softkey templates and phone button templates that apply to multiple devices.
Which component in CUCM is responsible for providing the necessary resources for conference calls, such as hardware or software-based conference bridges?
Media Resource Groups are logical collections of media devices like conference bridges.
Why this answer
Media Resource Groups (MRG) collect media resources like conference bridges, and MRG lists (MRGL) determine which resources are available to specific devices.
Which THREE of the following items can be defined within a Device Pool?
Locations are mapped to device pools for CAC.
Why this answer
Device pools provide a centralized location to apply settings like Date/Time, Regions, and Locations to devices.
Which service in CUCM is responsible for handling the registration of SIP devices?
This service is the heart of CUCM call processing.
Why this answer
The Cisco CallManager service handles all primary call control, including SIP registration.
When designing a redundant CUCM deployment, which mechanism ensures that if a primary subscriber fails, phones automatically register to a secondary subscriber?
The CM Group determines the registration order and redundancy for devices.
Why this answer
The Cisco Unified Communications Manager Group (CM Group) defines the ordered list of CUCM servers that a device will attempt to register with.
Which protocol is used by IP phones to register with the Cisco Unified Communications Manager?
These are the two primary protocols for phone registration.
Why this answer
Cisco IP phones use SCCP (Skinny) or SIP to communicate and register with CUCM.
Which THREE parameters are affected when you change the 'Location' of a device?
Video bandwidth is managed per location.
Why this answer
Location changes directly impact bandwidth reservation, call admission control, and inter-site call quality.
You are configuring a SIP trunk between CUCM and a CUBE. Which setting is critical to ensure that the SIP signaling is encrypted?
This profile defines the security settings for the SIP trunk.
Why this answer
A SIP Trunk Security Profile is where you define the security mode (Authenticated or Encrypted) for the trunk.
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?
These patterns modify the calling party number before processing.
Why this answer
Calling Party Transformation Patterns are specifically designed to normalize incoming caller IDs at the CUCM level before they reach the endpoint.
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