Cisco 300-815 Practice Exams
Last updated on Oct 22,2026- Exam Code: 300-815
- Exam Name: Implementing Cisco Advanced Call Control and Mobility Services (CLACCM)
- Certification Provider: Cisco
- Latest update: Oct 22,2026
What are the elements for Device Mobility configuration?
- A . physical location, device pool, and Device Mobility group
- B . device pool, Device Mobility group, and region
- C . physical location. Device Mobility group, and region
- D . device pool, Device Mobility group, and Cisco IP phone
A
Explanation:
Reference: https://www.ciscopress.com/articles/article.asp?p=1249228&seqNum=4
What is the relationship between partition, time schedule, and time period in Time-of-Day routing in Cisco Unified Communications Manager?
- A . A partition can have multiple time schedules assigned. A time schedule contains one or more time periods.
- B . A partition can have one time schedule assigned. A time schedule contains one or more time periods.
- C . A partition can have multiple time schedules assigned. A time schedule contains only one time period.
- D . A partition can have one time schedule assigned. A time schedule contains only one time period.
Where is the dtmf-relay command configured on Cisco Unified Border Element?
- A . in the voice-class VoIP configuration
- B . in the VoIP dial peer
- C . in global SIP configuration
- D . in the VoIP or POTS dial peers
B
Explanation:
Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/voice/cube/configuration/cube-book/dtmf-relay.html
A customer reports audio quality issues between video endpoints in the HQ location in California and one of the branches in Texas.
Which two actions must RTCP take to troubleshoot this issue? (Choose two.)
- A . Compress the headers of RTP traffic to lower the bandwidth consumption over the WAN. which allows more calls with less bandwidth consumed.
- B . Configure the rtcp keepalive command in Cisco Unified Border Element to generate reports, which can be reviewed using the debug voip rtcp packet command.
- C . Allow for VAD to be used for calls using the G7.29 codec, which reduces the usage of the WAN bandwidth and saves around 30% of bandwidth per call.
- D . Encrypt the media to stop rogue devices from replying and putting that traffic back on the WAN, which avoids any extra bandwidth and ensures the quality of the calls.
- E . Gather statistics on a media connection and information such as packets sent, lost packets, jitter, feedback, and round-trip delay. This information can help isolate the type of audio quality issues and the direction of the affected traffic.
How does an engineer globalize routing for ingress calls coming from the PSTN to internal DNs?
- A . At the PSTN gateway, put the calling number in PSTN format and the called number in DN format.
- B . At Cisco Unified CM, put the calling number in E.164 format and the called number in PSTN format.
- C . At the PSTN gateway, put the calling number in E.164 format and the called number in localized (DN) format.
- D . At Cisco Unified Communications Manager, put the calling number in E.164 format and the called number in E.164 format.
Refer to the exhibit.
Users report high delays when calling national numbers in the United States. An engineer analyzes the route patterns in Cisco UCM.
What must be done to resolve this issue?
- A . Change the Cisco UCM routing logic to the longest-match algorithm.
- B . Select Allow Overlap Sending for the +! route pattern.
- C . Mark the + [2-9JXX[2-91XXXXXX route pattern with urgent priority.
- D . Set the interdigit timeout service parameter value to 0.
An administrator is troubleshooting call failures on an H.323 gateway via the CLI.
To see signaling for media and call setup, which debug must the Administrator turn on?
- A . debug H.323 messages
- B . debug H.224 asn1
- C . debug H.246 asn 1
- D . debug H.225 media
- E . debug H.323 asn 1
An engineer is configuring a Cisco Collaboration system for SIP endpoints and must enable Survivable Remote Site Telephony for these endpoints.
Which code completes this configuration on the SRST gateway?
A)
B)
C)
D)
- A . Option A
- B . Option B
- C . Option C
- D . Option D
Refer to the exhibit.
An administrator received reports that users do not hear a ringback when they dial specific external numbers. For example, the Cisco Unified Border Element receives a delayed offer invite from Cisco UCM and responds with the 183 session progress in the exhibit. Assume that the PSTN is responsible
for generating ringback in these problematic scenarios.
Which action resolves the issue?
- A . Enable early media on the appropriate SIP trunk on Cisco UCM.
- B . Edit the configuration for SIP ReMXX Options in the appropriate SIP profile on Cisco UCM to Send PRACK if 1xx Contains SDP.
- C . On Cisco Unified Border Element: voice service voip sip
Re1xx require 100rel - D . On Cisco Unified Border Element: voice service voip sip
Re1xx disable 100rel
Refer to the exhibit.
An administrator is troubleshooting a problem in which some outbound calls from an internal network to the Internet telephony service provider are not getting connected, but some others connect successfully. The firewall team found that some call attempts on port 5060 came from an unrecognized IP that has not been defined in the firewall rule.
What should the administrator configure in the Cisco Unified Border Element to fix this issue?
- A . use of port 5061 for SIP secure
- B . access list allowing the firewall IP
- C . ip prefix-list to filter the unwanted IP address
- D . bind signaling and media to the loopback interface