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051 dumps

Question 1 Refer to the exhibit.

The MGCP debugs were captured on a Cisco IOS MGCP PRI gateway registered to a Cisco United CM.

Assume that this

gateway had no active calls and will not take any new calls for the next 3 minutes. What the it will send the

next

NTFY message to the Cisco United CM?

Options:

A. Jan 10 05:56:35.130

B. Jan 10 05:55:45.130

C. Jan 10 05:55:50.130

D. Jan 10 05:56:05.130

E. Jan 10 05:55:40.130

Cisco 400-051

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Answer: C

Question 2 DRAG DROP

An engineer is set ng up a proxy TFTP between multiple Cisco communication Manager clusters.

Drag the step from the left to the correct order on the right to properly configure the certificates for the proxy

TFTP.

Not all options will be used.

Select and Place:

Options:

A.

Cisco 400-051


Answer: A


A Cisco collaboration engineer discovers that an instance of IOS media termination point (MTP) could not

maintain

stable registration with CUCM. Call manager traces is showing in the exhibit. What is the reason for the

mapping

registration?

Cisco 400-051


Options:

A. The CCM version on IOS configuration does not match the CUCM version.

B. The IOS MTP is experiencing high CPU and is missing its keep-aliie.

C. A Firewall is blocking port 2000 intermittently between IOS Device and CUCM.

D. Another IOS Media device is attempting to register with the same name.

Answer: D

Question 4 A CUCM engineer has deployed Type B SIP Phones on a remote site and no SIP dial rules were deployed

for these

phones. How Will CUCM receive the DTMF after the phone goes off-hook and the button are pressed?

Options:

A. Each digit will be received by CUCM in a SIP NOTIFY message as soon as they are pressed

B. The first digit will be received in a sip invite and subsequent digits will be received using

NOTIFY message as soon as

they are pressed.

C. Each digit bill be received by CUCM in a SIP INVITE as soon as the dial of key has been

pressed.

D. All digits will be received by CUCM in a SIP INVITE as soon as the dial of key has been

pressed

Answer: A

Explanation:

Type-B IP telephones over functionality based on the Key Press Markup Language (KPML) to report user

key presses.

Each one of the user input events will generate its own KPML-based message to United CM. From the

standpoint of

relaying each user action immediately to United CM, this mode of operation is very similar to that of phones

running

SCCP.

Cisco 400-051


Every user key press triggers a SIP NOTIFY message to United CM to report a KPML event corresponding

to the key

pressed by the user. This messaging enables United CM's digit analysis to recognize partial patterns as

they are

composed by the user and to provide the appropriate feedback, such as immediate reorder tone if an

invalid number

is being dialled.

In contrast to Type-A IP phones running SIP without dial rules, Type-B SIP phones have no Dial key to

indicate the end

of user input. A user dealing 1000 would be provided call progress indication (either ringback tone or

reorder tone)

after dealing the last 0 and without having to press the Dial key. This behaviour is consistent with the user

interface on

phones running the SCCP protocol.

Question 5 Which two Cisco United Communicatons Manager Express hunt group mechanisms keep track of the

number of

hops in call delivery decisions? (Choose two.)

Options:

A. sequential

B. peer

C. the longest idle

D. parallel

E. overlay

F. linear

Cisco 400-051


Answer: B, C

Question 6 Which three issues present a customer from seeing the presence status of a new contact in their Jabber

contact list? (Choose three.)

Options:

A. Incoming calling search space on SIP trunk to IM&P

B. IM&P incoming ACL blocking inbound status

C. Subscribe calling search space on SIP trunk to IM&P

D. PC cannot resolve the FQDN of IM&P

E. Owner user ID is not set on device

F. Primary DN is not set in end user configuration for that user

G. Subscriber calling search space is not defined on user's phone

Answer: B, C, D

Explanation:

No Presence Information After Login

Problem

You receive no Presence information after login.

Solution

Complete these steps in order to resolve this issue:

Make sure that the DNS series the PC is pointed to can resolve the fully qualified name of the CUPS

series.

The host entry will not suits, you must resolve via DNS.

Check the SUBSCRIBE CSS on the SIP trunk to CUP.

This CSS must include the part tons of the devices you are trying to receive status on.

The CUP Sips proxy incoming access control list (ACL) is not allowing incoming SIP presence messages to

reach the

presence engine. As a test, set the incoming ACL to ALL and reset the SIP proxy and presence engine.

Log in again to

the CUPC and try to reconfigure the incoming ACL properly.


Cisco 400-051


An engineer is trying to provision CUCME with three tt41 phones. However all phone fail to register. Which

two

changes in the configuration would allow the phones to register? (Choose two)

Options:

A. The registrar series command must be added under the voice register global configuration

B. The IP address trusted authenticate command must be added under voice service VoIP

C. The source-address command must be added under the voice register global configuration

D. The local SIP proxy address must be configuration under the sip-ua configuration

Cisco 400-051


E. The registrar series command must be added under the sip section of voice service VoIP

Answer: C, E

Question 8 A collaboration engineer has been asked to implement secure real-time protocol between a Cisco United

CM and SIP

gateway. Which option is a consideration for this implementation?

Options:

A. Only T.38 and Cisco fax protocol are supported

B. SIP require the all the time be sent in GMT

C. Call hold RE-INVITE is not supported

D. SRTP is supported only in Cisco IOS 15.x and higher

Answer: B

Explanation:

As necessary, configure the router to use Greenwich Mean Time (GMT). SIP requires that all times be sent

in GMT. SIP

INVITE messages are sent in GMT. However, the default for routers is to use Coordinated Universal Time

(UTC). To

configure the router to use GMT, issue the clock timezone command in global configuration mode and

specify GMT.


Cisco 400-051


A collaboration engineer configures Cisco United CM location using G./11 and iLBC for each site. The

bandwidth for

each link is shown. Which two options represent the maximum concurrent number of calls supported from

Grand

Junction to Casper for each Codec? (Choose two)

Options:

A. 20 G./11 calls

B. 1t G./11 calls

C. 36 iLBC calls

D. 42 iLBC calls

E. 11 G./11 calls

F. 51 iLBC calls

Answer: C, E

Cisco 400-051


Question 10 A collaboration engineer is troubleshooting an MOH problem on a Cisco IOS SIP gateway. While searching

through a

debug ccsip message output, which three parameters in the SIP messages can be used to determine if the

call was

placed on hold? (Choose three)

Options:

A. OPTIONS WITH 301 CALLHOLD

B. INVITE WITH a=INACTIVE

C. INVITE WITH a=SENDONLY

D. OPTION WITH c=INACTIVE

E. c=IN IP4 0.0.0.0

F. BYE WITH A = CALLHOLD

Answer: B, C, E

Explanation:

Cisco 400-051


When a call is on hold you get something like this:

i=0

o=CiscoSystemsCCM-SIP 010t61 2 IN IP4 10.10.30.14

s=SIP Call

c=IN IP4 0.0.0.0

t=0 0

m=audio 30120 RTP:AVP 0 101

a=rtpmap:0 PCMU:t000

a=pt me:20

a=inactive

a=rtpmap:101 telephone-eient:t000

a=SMTP:101 0-15

The connection parameter shows 0.0.0.0, When the call is taking of hold you, the connection parameter

should

indicate the IP address where media am sent to. So it will have a real value. ( This is usual sent in the

ACK.) CACM still

sends a DO in the re-INVITE and the far end sends a 200 OK with SDP. CUCM then sends ACK with SDP

This is how the whole call hold:transfer:call resume works

1. CUCM sends invite (re-invite) with an inactive SDP (a=inactive) to indicate a break in media path

2. CUCM sends a Delayed over to insert MOH or to resume Media stream

NB: CUCM expects a sendreci over with SDP to the DO. (NB:if CACM gets an inactive over SDP in the 200

OK instead of

Cisco 400-051


providing a send-reci over SDP, the media path remains in an inactive state and causes calls to drop call

will

drop),CUCM sends an ACK with send only to the 200 OK

.CUCM establishes new call leg with the intended transferred destination..Once this call is connected

4.CUCM receives a new Transfer instruction from the transferring phone to connect the held party

5. Next CUCM sends a re-invite with an inactive SDP to indicate a break in media path to MOH (in attempt

to

complete transfer)

6.Next CUCM sends an inactive SDP to indicate a break in media path between transferring party &

transferred party to

remote Referring party from call

/. Next CUCM sends a DO re-invite to connect the transferred party. The far end then sends 200 OK with

the required

SDP to connect the call

Question 11 Exhibit:

Which Cisco IOS multipoint video conferencing profile is being configured?

Options:

A. Homogeneous

B. guaranteed-audio

C. rendezvous

D. heterogeneous

E. guaranteed-iideo

Cisco 400-051


Answer: D

Explanation:

Heterogeneous, which means that multiple codecs and multiple bit rates are supported

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