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
A newly deployed site in Pennsylvania uses SIP-to-SIP legs on a Cisco Unified Border Element. The administrator wants to match the incoming dial peer based on the calling number.
Which configuration is needed in the dial-peer?
- A . answer-address
- B . incoming called-number
- C . destination calling
- D . destination-pattern
If all patterns below are configured in Cisco Unified Communications Manager which would be used when dialing the pattern “123”?
- A . 12!
- B . 12X (urgent priority set)
- C . 1XX (urgent Priority Set)
- D . 12[2-5]
An administrator discovers that employees are making unauthorized long-distance and international calls from logged-off Extension Mobility phones when the authorized users are away from their desks
Which two configurations should the administrator configure in the Cisco UCM to avoid this issue? (Choose two.)
- A . Remove the long-distance & international pattern’s partitions from the calling search space of the physical phone.
- B . Add the long-distance & international pattern’s partitions to the calling search space of the physical phone’s directory number.
- C . Remove the long-distance & international pattern’s partitions from the calling search space of the device profile.
- D . Add the long-distance & international pattern’s partitions to the calling search space of the physical phone.
- E . Add the long-distance & international pattern’s partitions to the calling search space of the device profile
Users report slrange behaviors when Ihey call external numbers from the company phone system. The company is using Cisco 8865 phones with Cisco UCM connected to a gateway with two T1 circuits. There is no indication of the possible problem, but the connection seems to be established.
Which command meets the requirement to capture all the data needed to debug the problem?
- A . debug mgcp media tracelevel critical all
- B . debug mgcp media tracelevel critical verbose
- C . debug mgcp media tracelevel critical
- D . debug mgcp media tracelevel moderate
Refer to the exhibit.
Outbound calls to the service provider cause intermittent errors due to a codec mismatch. The internal network sends early offer SDP that contains only G.711 A-law. The service provider reports that some destinations support only G.711 A-law while others support only iLBC. The service provider also allows only 20 active calls at a time.
Which configuration allows successful media negotiation for all calls using outbound dial peers 5002 and 5003?
- A . Option A
- B . Option B
- C . Option C
- D . Option D
Refer to the exhibit.
A user reports that when they call a specific phone number, no one answers the call, but when they call from a mobile phone, the call is answered. The engineer troubleshooting the issue is expecting the far-end gateway to cut through audio on the 183 Session Progress SIP message.
Which SIP Profile configuration element is necessary for the Cisco Unified Communications Manager to send acknowledgement of provisional responses?
- A . Allow Passthrough of Configured Line Device Caller Information must be enabled.
- B . Accept Audio Codec Preferences in Received Offer must be set to On.
- C . On the SIP Profile, the configuration parameter SIP Rel1XX Options must be set to Send PRACK for all 1xx Messages.
- D . Early Offer for G Clear Calls must be enabled.
The SIP session refresh timer allows the RTP session to stay active during an active call. The Cisco UCM sends either SIP-INVITE or SIP-UPDATE messages in a regular interval of time throughout the active duration of the call. During a troubleshooting session, the engineer finds that the Cisco UCM is sending SIP-UPDATE as the SIP session refresher, and the engineer would like to use SIP-INVITE as the session refresher.
What configuration should be made in the Cisco UCM to achieve this?
- A . Enable SIP ReMXX Options on the SIP profile.
- B . Enable Send send-receive SDP in mid-call INVITE on the SIP profile.
- C . Change Session Refresh Method on the SIP profile to INVITE.
- D . Increase Retry INVITE to 20 seconds on the SIP profile.
The same digits sent in OOB, as well as in-band on the Cisco Unified Border Element, are being interpreted as duplicate digits by the receiving end.
Which configuration must an engineer implement to resolve this issue?
- A . DTMF Relay SIP-KPML
- B . DTMF Relay SIP-Notify
- C . DTMF Relay RTP-nte
- D . DTMF Relay Digit-Drop
What does VoIP trace in a Cisco Unified Border Element do?
- A . It stores all call trace data in system memory for failed calls.
- B . It stores all can trace data in system memory (or successful and failed calls
- C . It stores all call trace data in system log files for successful and failed calls.
- D . It stores all can trace data in system file logs for failed calls.
A user in location X dials an extension at location Y. The call travels through a QoS-enabled WAN network, but the user experiences choppy or clipped audio.
What is the cause of this issue?
- A . missing Call Admission Control
- B . codec mismatch
- C . ptime mismatch
- D . phone class of service issue