Free 300-815 Sample Questions — Implementing Cisco Advanced Call Control and Mobility Services (CLASSM)

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 messages for one of the one-way audio calls. Where can you find the RTP IP and port information for both sides? (Note: This call flow has not invoked any media resources like MTP or transcoders).

• A. H.245 Terminal Capability Set
• B. H.245 Open Logical Channel
• C. H.225 Connect
• D. H.245 Open Logical Channel Ack

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

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

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 sip
• B. voice service voip
• C. voice register global
• D. voice register dn

An engineer is troubleshooting local ringback on a Cisco SIP gateway. The gateway is not ignoring the SIP 180 response with SDP from the service provider, and the far end device is sending the 180 with SDP to play ringback from the IP address specified in the SDP. Which configuration change must be made on the gateway to resolve the issue?

• A. Router(config-sip-ua)# no disable-early-media 180
• B. Router(conf-voi-serv)# no disable-early-media 180
• C. Router(conf-voi-serv)# disable-early-media 180
• D. Router(config-sip-ua)# disable-early-media 180

An engineer is implementing survivability for a collaboration environment. The environment is utilizing a centralized Cisco UCM at the headquarters and Cisco IOS-XE gateways in the remote branches. Which action must the engineer take to enable both shared lines and B-ACD for SIP branch phones during a WAN outage?

• A. Configure mode esrst under voice register global configuration mode
• B. Configure mode srst under telephony-service configuration mode
• C. Configure mode esrst under voice service voip configuration mode
• D. Configure mode esrst under telephony-service configuration mode

A voice administrator enabled secure media between multiple Cisco UCM clusters that are connected via a SIP trunk. Which configuration parameter in the SIP trunk must be enabled to allow encrypted media traffic to traverse the SIP trunk?

• A. Check the Allow iX Application Media check box in the SIP Profile
• B. Check the SRTP Allowed check box in the SIP Trunk configuration
• C. Check the RTP Allowed check box in the SIP Trunk configuration
• D. Uncheck the RTP Allowed check box in the SIP Trunk configuration

An engineer needs to deploy the local route group feature to a Cisco UCM server by using the standard local route group. For each device pool, the engineer needs to specify a different PSTN access for emergency calls. What must the engineer do?

• A. Add a new standard local route group. Select a route group as the new standard local route group in Device Pools. Create a route pattern of 911 that points to a route list that contains the new standard local route group
• B. Create a new local route group name. In Device Pools, select a route group for that new local route group. Create a route pattern of 911 that points to a route list that contains the new local route group
• C. Set a new local route group name. Select a route group as the new local route group in Device Pools. Create a route pattern of 911 that points to the new local route group
• D. Add a new standard local route group. Select a route group as the new standard local route group in Device Pools. Create a route pattern of 911 that points to the new standard local route group

When a third-party SIP Phone System is dialed inbound across a Cisco Unified Border Element, DTMF is failing. The third-party vendor accepts only out-of-band DTMF. Which configuration should be added to the outgoing dial peer to resolve this issue?

• A. dtmf-relay rtp-nte
• B. dtmf-relay cisco-rtp
• C. dtmf-relay h245-signal
• D. dtmf-relay sip-kpml

An engineer is troubleshooting Cisco Device Mobility and find that the phone has roamed to a building that is assigned to a different device pool but has not changed its device pool accordingly. What action resolves the issue?

• A. Set correct Location under Current Device Mobility Settings
• B. Enable SRST under Current Device Mobility Settings
• C. Set Device CSS under Current Device Mobility Settings
• D. Set the correct subnet under Device Mobility info

When configuring hunt groups, where do you add the individual directory numbers that will be part of the group?

• A. route group
• B. line group
• C. hunt list
• D. hunt pilot

A company was looking at the IT charges and saw many long-distance and international calls primarily to sites in North America and around the world. The administrator wants to optimize the PSTN expense. Which dial plan configuration reduces PSTN connectivity charges by using the IP network to bring the egress point to the PSTN as close as possible to the called number?

• A. translation patterns
• B. tail end hop off
• C. client matter codes
• D. dial rules

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?

• A. Set the "Retain Media on Disconnect with PI for Active Call" service parameter to False
• B. Set the "Retain Media on Disconnect with PI for Active Call" service parameter to True
• C. Configure a handoff number
• D. Add Other Dual-Mode Device

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?

• A. Assign a self-signed certificate to the ILS service trunk
• B. Apply a secure security profile to the trunk between the clusters
• C. Select the TLS option on the SIP trunk between the clusters
• D. Exchange Tomcat certificates

When locations-based Call Admission Control denies the call, which two masks can AAR apply when routing the call through the PSTN? (Choose two.)

• A. AAR destination mask
• B. called party transform mask
• C. external phone number mask
• D. +E.164 alternate number mask
• E. enterrise alternate number mask

Cisco SIP IP telephony is implemented on two floors of your company. Afterward, users report intermittent voice issues in calls established between floors. All calls are established, and sometimes they work well, but sometimes there is one-way audio or no audio. You determine that there is a firewall between the floors, and the administrator reports that it is allowing SIP signaling and UDP ports from 20000 to 22000 bidirectionally. What are two possible solutions? (Choose two.)

• A. Go to the SIP profile assigned to these IP phones in Cisco Unified CM and change the range of media ports to 16384-32767
• B. Ask the firewall administrator to change the ports to TCP
• C. Ask the firewall administrator to change the range of UDP ports to 16384-32767
• D. Go to the SIP profile assigned to these IP phones in Cisco Unified CM and change the range of media ports to 20000-22000
• E. Go to System Parameters in Cisco Unified Communications Manager and change the range of media ports to 20000-22000

An engineer has two Cisco UCM clusters and wants them using ILS with TLS Certificates. Cluster A (Pub and 1 Subscriber) will be the hub, and Cluster B (Pub and 1 Subscriber) will be the spoke. Both clusters have self-signed certificates. The engineer has exchanged Publisher A and Subscriber B Tomcat certificates, but the connection fails. What is the cause of the failure?

• A. The password is incorrect
• B. Cluster IDs are not unique
• C. The Tomcat certificate from Cluster B must be the Publisher
• D. The engineer needs to exchange the CallManager certificate

What is a component of Cisco Unified Mobility?

• A. Unified IVR
• B. Mobile Connect
• C. Smart Client Support
• D. Single Number Connect

An administrator is configuring Cisco UCM and the system to send *.webex.com traffic to a Cisco UCM Session Management Edition cluster. The administrator wants to limit which endpoints can reach *.webex.com. Which two items must the administrator configure for the SIP route pattern? (Choose two.)

• A. calling party transformation
• B. partition of the SIP route pattern
• C. connected party transformation
• D. called party URI transformation
• E. destination SIP trunk of the SIP route pattern

End users at a new site report being unable to hear the remote party when calling or being called by users at headquarters. Calls to and from the PSTN work as expected. To investigate the SIP signaling to troubleshoot the problem, which field can provide a hint for troubleshooting?

• A. Contact: header of the 200 OK response
• B. Allow: header if the 200 OK response
• C. o= line of SDP content
• D. c= line of SDP content