300-815 Online Practice Questions and Answers

Refer to the exhibit.

Users report that when they dial to Cisco Unity Connection from an external network, they cannot enter any digits. Assuming only in-band DTMF is supported, what is a reason for this malfunction?

A. The negotiated RTP port is outside of the range described by RFC, so inband DTMFs do not work.

B. There is SIP Delayed Offer. DTMF is supported only in Early Offer.

C. The rtpmap:0 value for the negotiated codec is marking DTMF as inactive.

D. No DTMF is negotiated.

Refer to the exhibit.

An administrator has configured a SIP trunk between two Cisco UCM clusters. For calls that should use the trunk, the calls fail with a fast busy. The administrator checks the Cisco CallManager SDL traces and found that the cluster to which the calling device is registered never sends an INVITE to the destination cluster. The administrator also verifies that all nodes from both clusters are powered on, and the CallManager service is running. How is this issue resolved?

A. The administrator must associate the route pattern with a calling search space the device can dial.

B. The administrator needs to enable OPTIONS pings on the SIP trunks for both clusters.

C. The administrator must allow connectivity so that TCP connections do not fail between the nodes.

D. The administrator needs to disable OPTIONS pings on the SIP trunks for both clusters.

Which action is correct with respect to toll fraud prevention configuration in the Cisco Unified Communications Manager Express?

A. Configure Direct Inward Dial for Incoming ISDN Calls with overlap dialing.

B. Configure IP Address Trusted Authentication for Incoming VoIP Calls.

C. Configure the command no ip address trusted authenticate under "voice service voip".

D. Enable Secondary Dial tone on Analog and Digital FXO Ports.

Refer to the exhibit.

A call made through the Cisco Unified Border Element to pilot 2000 is failing. What is causing the call to fail?

A. The Cisco Unified Border Element is not receiving a response to its OPTION keepalives.

B. The destination pattern is incorrect for the dialed number.

C. VAD was not disabled on the outgoing dial peer.

D. No codecs are configured on the dial peers.

Which set of commands binds SIP media and signaling to interface GigabitEthernet0/0 when dial peer 1 is chosen for call routing?

A. dial-peer voice 1 voip voice-class source interface GigabitEthernet0/0

B. voice service voip bind sip source-interface GigabitEthernet0/0

C. voice service voip sip bind all source-interface GigabitEthernet0/0

D. dial-peer voice 1 voip voice-class bind control source-interface GigabitEthernet0/0 voice-class sip bind media source-interface GigabitEthernet0/0

Refer to the exhibit. An engineer is trying to set up a new deployment using the SIP provider with TCP for signaling. After troubleshooting, the customer notices that the matching incoming dial peer and outgoing dial peer did not generate the INVITE to the SIP provider. Why is the call failing?

A. The ITSP is sending FIN.

B. The ITSP is not sending the ACK.

C. The ITSP is sending CLOSE state.

D. The ITSP is not answering the SYN.

Some users report poor quality when they travel to another continent and make calls. This issue applies only to one continent and not to others, where typically the dialing is fast and quality is clear. Users experience the same result at home when they call the same numbers in that specific continent. It seems like some users do not exist in the correct PSTN gateway when making calls to a specific country. The company is using TEHO to save on the cost of international or long-distance calling.

They are also using a globalized dial plan. What is the cause of the issue?

A. CUBE is not configured for TEHO in the specific country.

B. A local route group is not added to the route pattern.

C. The users are missing this specific gateway at the device pool level.

D. Regions in Cisco UCM are not configured correctly.

Which built-in bridge configuration option can be set on the individual IP phones to ensure that the cluster-wide service parameter is used?

A. automatic

B. default

C. on

D. off

What does VoIP trace in a Cisco Unified Border Element do?

A. It stores all call trace data in system log files for successful and failed calls.

B. It stores all call trace data in system file logs for failed calls.

C. It stores all call trace data in system memory for failed calls.

D. It stores all call trace data in system memory for successful and failed calls.

Refer to the exhibit. An administrator just implemented SIP trunking on their Cisco UCM and reports that calls using the SIP trunk are using Media Termination Point resources unnecessarily. Which action resolves the issue?

A. Change DTMF Signaling Method to “No Preference”.

B. Disable SIP Rel1XX Options.

C. Change to a range that does not result in MTP.

D. Change DTMF Signaling Method to “RFC 4733”.