300-815 試験問題を無料オンラインアクセス

Refer to the exhibit.

An engineer is troubleshooting an issue where inbound calls to Cisco UCM with early media fail to establish. While investigating the issue, the engineer finds that Cisco UCM is set to require a PRACK. but the Cisco Unified Border Element is not sending it. Which command is causing this issue?

• A.voice-class sip conn-reuse
• B.voice-class sip early-media update block
• C.voice-class sip rel1xx disable
• D.voice-class midcall-signaling block

What is first preference condition matched in a SIP-enabled incoming dial peer?

• A.answer-address
• B.target carrier-id
• C.incoming called-number
• D.incoming uri

A user has a problem calling a specific PSTN number. An engineer investigates the issue on a Cisco UCM server and a Cisco Unified Border Element router, and discovers that the ITSP rejects the outbound SIP INVITE with a 422 Session Timer Too Small SIP message. What must the engineer do to resolve the issue?

• A.Decrease the Min-SE SIP header timer on the appropriate Cisco Unified Border Element dial peer.
• B.Increase the Min-SE SIP header timer on the appropriate Cisco Unified Border Element dial peer.
• C.Decrease the SIP Session Expires Timer service parameter in Cisco UCM.
• D.Increase the SIP Session Expires Timer service parameter in Cisco UCM.

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.ptime mismatch
• B.codec mismatch
• C.missing Call Admission Control
• D.phone class of service issue

A solution for a large company is being reconfigured to optimize for cost saving. The company has an extensive global QoS-enabled network with enough bandwidth to create a converged network. Local calls are relatively inexpensive in countries the company have operations, but long distance and international calls are expensive.
Which type of configuration supported by Cisco UCM would help optimize cost control for this company?

• A.high complex codec support like G.729 to minimize bandwidth usage
• B.end hop off
• C.Mobile and Remote Access
• D.standard local route groups for mobile users