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QUESTION 23
IP Phone A at Site 1 can only call IP phones at its own site. A call to Phone B at Site 2 does not work. Following is a partial configuration of the WAN router at site 1:
interface Serial0/0 ip address 192.168.12.2 255.255.255.0 ip access-group 101 out encapsulation frame-relay frame-relay map ip 192.168.12.1 101 broadcast ! interface FastEthernet0/0 ! extended ip access-list 101 permit tcp any any eq 2000 permit icmp any any echo-reply ! ip route 0.0.0.0 0.0.0.0 192.168.12.1
Pinging Phone B from PC A yields the following:
ping 172.16.6.4
Type escape sequence to abort.

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QUESTION 51
Use the diagram to assist in answering this question.
You have received a trouble ticket for a recently installed MGCP gateway. In testing it appears that the CallManager cluster cannot communicate with the gateway. The gateway address is 10.1.44.12/24 and the CallManager that is going to control the gateway has an address of 10.1.44.4/24. Use the following configuration snip to resolve the problem.
! mgcp mgcp call-agent 10.1.44.4 2427 service-type mgcp version 1.0 mgcp dtmf-relay voip codec all mode out-of-band mgcp rtp unreachable timeout 1000 action notify mgcp modem passthroughvoice mode cisco mgcp sdp simple mgcp package-capability rtp-package mgcp package-capability sst-package no mgcp timer receive-rtcp no mgcp explicit hookstate
! ccm-manager config server 10.1.44.7
ccm-manager config !
What command is missing from the configuration that will allow the CallManager to control this gateway?

A. ccm-manager mgcp
B. mgcp bind control source-interface FastEthernet 0/0
C. ccm-manager redundant-host
D. ccm-manager fallback-mgcp
E. ccm-manager switchback

Correct Answer: A Section: (none) Explanation
Explanation/Reference:
QUESTION 52
You have received a trouble ticket that says users are experiencing echo when going out the H.323 gateway. You have tested the gateway and have modified the configuration so that the ERL level is now 4 dB. You also increased the echo-cancel coverage value to 32 ms. How will this impact voice quality after thischange?

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QUESTION 51

A. Configure progress_ind setup enable 3 under the gateway VoIP dial-peer
B. Configure progress_ind alert enable 8 under the gateway POTS dial-peer
C. configure voice rtp send-rcv in the gateway
D. Set CallManager Service Parameter ToSendH225UserInfoMsg to True

Correct Answer: C
Section: (none)
Explanation

Explanation/Reference:

QUESTION 52
Which unity troubleshooting tool would be used to diagnose problems with skinny and MWI?

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QUESTION 50
You are troubleshooting an issue where a user cannot make calls to the PSTN. You are reviewing trace
files and you have found where the user’s IP phone initiates the call but you never see the call go out to the
gateway.
What is the next valid step in troubleshooting this issue?

A. Look in the SDL trace file to see if there is a signal to another CallManager node with the sametcp-handle.
B. Look in the SDL trace file to see if there is a signal to another CallManager node with the same time-stamp.
C. Look in the IP Voice Media Streaming App trace file to see if an MTP was invoked.
D. Look in the MGCP trace file to determine which MGCP gateway the call was sent to.

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