300-815 Free Practice Test

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

1. A. Configure Direct Inward Dial for Incoming ISDN Calls with overlap dialing.
2. B. Configure IP Address Trusted Authentication for Incoming VoIP Calls.
3. C. Configure the command no ip address trusted authenticate under “voice service voip”.
4. D. Enable Secondary Dial tone on Analog and Digital FXO Ports.

Correct Answer: B

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1. A. Allow Passthrough of Configured Line Device Caller Information must be enabled.
2. B. Accept Audio Codec Preferences in Received Offer must be set to On.
3. C. On the SIP Profile, the configuration parameter SIP Rel1XX Options must be set to Send PRACK for all 1xx Messages.
4. D. Early Offer for G Clear Calls must be enabled.

Correct Answer: C

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?

1. A. missing Call Admission Control
2. B. codec mismatch
3. C. ptime mismatch
4. D. phone class of service issue

Correct Answer: B

Which two extended capabilities must be configured on dial peers for fast start-to-early media scenarios (H.323 to SIP interworking)? (Choose two.)

1. A. DTMF
2. B. BFCP
3. C. VIDEO
4. D. FAX
5. E. AUDIO

Correct Answer: AB

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1. A. The negotiated RTP port is outside of the range described by RFC, so inband DTMFs do not work.
2. B. There is SIP Delayed Offe
3. C. DTMF is supported only in Early Offer.
4. D. The rtpmap:0 value for the negotiated codec is marking DTMF as inactive.
5. E. No DTMF is negotiated.

Correct Answer: D