300-815 exam

An administrator is troubleshooting call failures on an H.323 gateway via the CLI. To see signaling for media and call setup, which two debugs must the administrator turn on? (Choose two).A . debug H.245 asn1B . debug H.323 messageC . debug H.225 asn1D . debug H.225 mediaE . debug H.323...

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 ControlB . codec mismatchC . ptime mismatchD . phone class of service...

Which two configuration parameters are prerequisites to set Native Call Queuing on Cisco Unified Communications Manager? (Choose two.)A . Cisco IP Voice Media Streaming Service must be activated on at least one node in the cluster.B . A unicast music on hold audio source must be configured.C . Cisco RIS...

Which top-level IOS command is needed to begin the configuration of a Cisco Unified Communications Manager Express gateway to enable phones to be registered via SIP?A . allow-connections sip to sipB . voice service voipC . voice register globalD . voice register dnView AnswerAnswer: B Explanation: Reference: https://www.cisco.com/c/en/us/support/docs/voice-unified-communications/unified-communications-manager-express/99946-cme-sip-guide.html

Which description of RTP timestamps or sequence numbers is true?A . The sequence number is used to detect losses.B . Timestamps increase by the time “carrying” by a packet.C . Sequence numbers increase by four for each RTP packet transmitted.D . The timestamp is used to place the incoming audio...

A company has an SRST gateway running an IOS XE image. The company plans to enable the IPv6 addressing companywide. To enable the IPv6 in a unified SRST gateway to support SIP phones, what are two supported supplementary features for an IPv6 fallback scenario? (Choose two.)A . three-way conferenceB ....

An administrator is configuring a cluster for ILS and wants to limit the amount of entities that Cisco Unified Communications Manager can write to the database for data that is learned through ILS. Which service parameter is used to adjust this limit?A . ILS Max Number of Learned Objects in...

The administrator of ABC company is troubleshooting a one-way audio issue for a call that uses H.323 protocol (slow-start mode). The administrator requests that you provide the IP and port information of the Real- Time Transport Protocol traffic that had the one-way audio call. You gather the H.225 and H.245...

Which two types of distribution algorithm are within a line group? (Choose two.)A . randomB . circularC . highest preferenceD . top downE . bottom upView AnswerAnswer: BD Explanation: Reference: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/9_0_1/ccmcfg/CUCM_BK_CDF59AFB_00_admin-guide-90/CUCM_BK_CDF59AFB_00_admin-guide_chapter_0100011.html

Where is the dtmf-relay command configured on Cisco Unified Border Element?A . in the voice-class VoIP configurationB . in the VoIP dial peerC . in global SIP configurationD . in the VoIP or POTS dial peersView AnswerAnswer: B Explanation: Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/voice/cube/configuration/cube-book/dtmf-relay.html