Cisco 642-437 Actual Free Exam Questions & Community Discussion
Which two methods are used by a Cisco gateway to transmit fax traffic across the IP network? (Choose two.)
Correct Answer: A,E
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Which troubleshooting command will allow you to view the Cisco Unified Border Element operations for components such as the description of the media flow, negotiated parameters, and RTP port numbers?
Correct Answer: E
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DRAG DROP
Drag the components that make up Cisco fax relay and T.38 from the left and drop them under the appropriate category on the right.
Cisco 642-437 Exam
Drag the components that make up Cisco fax relay and T.38 from the left and drop them under the appropriate category on the right.
Cisco 642-437 Exam
Correct Answer:
Explanation:
Cisco fax relay is the oldest method of supporting fax on Cisco IOS gateways and has been supported since Cisco IOS Release 11.3. Cisco fax relay uses Real-Time Transport Protocol (RTP) as the method of transport. In Cisco fax relay mode, gateways terminate T.30 fax signaling by spoofing a virtual fax machine to the locally attached fax machine. The gateways use a Cisco-proprietary fax-relay RTP-based protocol to communicate between them.
T.38 Fax Relay provides an ITU-T standards-based method and protocols for fax relay. Data is packetized and encapsulated according to the T.38 standard. The encoding of the packet headers and the mechanism to switch from VoIP mode to fax relay mode are clearly defined in the specification.
http://www.cisco.com/en/US/docs/ios/12_3/vvf_c/voice_troubleshooting/old/vts_fax.html
Which option inside DHCP pool configuration gives a TFTP server to a Cisco IP phone?
Correct Answer: A
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Refer to the exhibit.
Cisco 642-437 Exam
An administrator is migrating a PBX telephony system to a VoIP solution using a fixed numbering plan. The extension numbers and PSTN DIDs cannot be changed. Which of the following methods can be used in order to reach the individual extensions at Site B when called via the PSTN?
Cisco 642-437 Exam
An administrator is migrating a PBX telephony system to a VoIP solution using a fixed numbering plan. The extension numbers and PSTN DIDs cannot be changed. Which of the following methods can be used in order to reach the individual extensions at Site B when called via the PSTN?
Correct Answer: B
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Which WAN connection speeds are recommended for using link fragmentation and interleaving?
Correct Answer: C
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Which codec complexity type will offer the greatest number of voice channels, provided that the complexity type is compatible with the particular codecs that are in use?
Correct Answer: A
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A small office needs to provide outbound dialing and in-bound DID without the cost of a T1 circuit. All signaling is loop start. Which analog port configuration will support these requirements?
Correct Answer: A
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What is the reason that an outgoing call succeeds when COR is applied to the incoming dial peer, but no COR is applied to the outgoing dial peer?
Correct Answer: C
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Which codec complexity type allows medium-complexity codecs to be run in high-complexity mode, but with fewer (usually approximately half) of the channels available per DSP?
Correct Answer: B
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Which command should you use to activate the analog voice port in voice-port configuration mode?
Correct Answer: D
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Which dial plan component is responsible for choosing the appropriate path for a call?
Correct Answer: D
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Two networks have Resource Reservation Protocol and Cisco Unified Border Element gateway configuration. To RSVP reserve bandwidth and guarantee a minimum bit rate between these two networks, which command should you use on the outgoing gateway dial peer of the Cisco Unified Border Element?
Correct Answer: C
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