Download Implementing Cisco Advanced Call Control and Mobility Services (CLASSM).300-815.ExamTopics.2026-04-27.231q.tqb

Vendor: Cisco
Exam Code: 300-815
Exam Name: Implementing Cisco Advanced Call Control and Mobility Services (CLASSM)
Date: Apr 27, 2026
File Size: 8 MB
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Demo Questions

Question 1
In Cisco Unified Communications Manager globalized call routing is implemented and must confirm that it is correctly implemented without making a call. Which tool do you use for verification?
  1. Dialed Number Analyzer
  2. Real-Time Monitoring Tool
  3. SDI trace
  4. SDL trace
Correct answer: A
Question 2
When the services key is pressed Cisco Extension Mobility does not show up. What is the cause of the issue?
  1. The URL configured for Cisco Extension Mobility is not correct.
  2. Cisco Extension Mobility Service is not running.
  3. The phone is not subscribed to Cisco Extension Mobility Service.
  4. Cisco Extension Mobility is not enabled in the Phone Configuration Window (Device > Phone)
Correct answer: C
Question 3
A Cisco UCM-based solution uses URI-based calling for Cisco Jabber clients. The solution has several clusters in different locations. The solution being configured must have a secure method of exchanging addresses between the clusters. Which action ensures that a configuration complies with the requirements?
  1. Assign a self-signed certificate to the ILS service trunk.
  2. Apply a secure security profile to the trunk between the clusters.
  3. Select the TLS option on the SIP trunk between the clusters.
  4. Exchange Tomcat certificates.
Correct answer: C
Question 4
Refer to the exhibit. Calls from users to the PSTN in an organization get disconnected with a 408 Request Timeout when the called party is unavailable to pick up the call. Which solution must be used to resolve this challenge?
  1. Configure midcall-signaling preserve-codec.
  2. Choose "Send PRACK" if 1xx contains SDP in the SIP profile.
  3. Configure midcall-signaling passthru media-change.
  4. Choose "Send PRACK for all 1xx Messages" in the SIP profile.
Correct answer: D
Question 5
Refer to the exhibit. An engineer deploys CAC to Cisco UCM. Up to five G.711 calls must be supported on the WAN link between Site A and Site B. Users report that only four concurrent calls are possible between Site A and Site B. Why isn't the fifth concurrent call successful?
  1. The G.729 audio codec is negotiated between Site A and B instead of the G.711 codec.
  2. The QoS configuration on the WAN link causes the fifth call to be dropped.
  3. Cisco UCM is using alternative links because of the Weight value.
  4. The Audio Bandwidth value is undersized and mist be set to 400 kbps.
Correct answer: D
Question 6
An administrator is configuring an Intercluster Lookup Service between 10 Cisco UCM clusters. Due to security requirements, certificate-based authentication must be used. Due to the deployment size, the administrator wants to avoid manually exchanging certificates between the clusters. Which two steps must be followed to meet these requirements? (Choose two.)
  1. Set all clusters to standalone on the ILS configuration page.
  2. Install multiserver CA-signed Tomcat certificates on all cluster publishers.
  3. Enable password-based authentication in conjunction with certificate-based authentication.
  4. Ensure that the cluster ID for all clusters is the same.
  5. Install multiserver CA-signed CallManager certificates on all cluster publishers.
Correct answer: B, D
Question 7
Refer to the exhibit. An engineer deploys a Cisco Unified Border Element for SIP trunk interconnection to an ITSP. The engineer performs test calls but there is no audio when the called party picks up the phone. What must the engineer do to resolve the issue?
  1. Disable SIP User Agent bind status (media).
  2. Decrease the SIP max-forwards value to 16.
  3. Disable SIP early-media for 180 responses with SDP.
  4. Enable Check media source packets.
Correct answer: D
Question 8
An organization needs to ensure that the Cisco UCM can provide a resume softkey to users on their desk phones when they disconnect an anchored call on their mobile phone. Which solution must be used to accomplish these goals?
  1. Set the "Retain Media on Disconnect with PI for Active Call" service parameter to False.
  2. Set the "Retain Media on Disconnect with PI for Active Call" service parameter to True.
  3. Configure a handoff number.
  4. Add Other Dual-Mode Device.
Correct answer: A
Question 9
Refer to the exhibit. An administrator configured a new SIP trunk between Cisco UCM and Cisco Unified Border Element. Calls that use this new trunk are failing, and debugs from the Cisco Unified Border Element do not show any signaling received from Cisco UCM. The administrator verified that OPTIONS is enabled on the SIP profile configured on the trunk on Cisco UCM. The route pattern matched for this call is correctly configured to send calls to the Cisco Unified Border Element using this new trunk. What is the cause of this failure?
  1. The calling search space on the calling line/device does not contain the partition of the route pattern
  2. The called party number is not complete because it contains only 7 digits
  3. A connectivity issue between Cisco UCM and Cisco Unified Border Element prevents Cisco UCM from receiving a response to the OPTIONS it is sending to Cisco Unified Border Element
  4. There are multiple matches for the dialed number, and Cisco UCM is trying to send the call to SEP2834A2824611 rather than Cisco Unified Border Element
Correct answer: C
Question 10
An engineer is configuring a Cisco Unified Border Element. The SIP ITSP requires a DNIS of 10-digits and DTMF tones sent in the RTP stream on the outbound leg of a call. Which code completes this configuration?
  1. [@_img_fb15ecec-a683-4e3e-9435-f0f6a368fbb2_@]
  2. [@_img_e6078cd1-393c-4ac7-8d45-5e89cf993ad3_@]
  3. [@_img_b34cb980-319a-4656-b4df-617039238484_@]
  4. [@_img_4670483c-1755-4139-b421-bdf4623b8ba7_@]
Correct answer: C
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