Echo is always present to some extent in all voice networks. For echo to be a problem, which
three conditions must exist? (Choose three.)

Refer to the exhibit.

You have received a trouble ticket stating that calls to international numbers
are failing. To place an international call, users dial the access code “9,” followed by “011,” the
country code, and the destination number. After entering the debug isdn q931 command on the
MGCP gateway, you have the user attempt the call again.

Based on the debug output, what is the most likely cause of this problem?

You have received a trouble ticket from John Doe at extension 2001, which states that he cannot
call a new employee who has been assigned extension 2005. When John Doe attempts to call
2005 he hears a message that his call cannot be completed as dialed. What is one possible cause
of this issue?

A company has migrated to a Cisco Unified CallManager IP Telephony system and is now
replacing the existing voice-mail system with a Cisco Unity voice-mail system. A small group of
users has been established to test the new voice mail system. The users were able to initialize
their mailboxes and record greetings; however, during testing the callers were sometimes unable
to leave voice-mail messages for Cisco Unity users.
Which two issues could cause this problem? (Choose two.)

Which Cisco Unity troubleshooting tool would be used to diagnose problems with skinny and MWI
messages?

Your company has a centralized IP Telephony system and branch offices in eight major cities. The
manager of your company help desk recently published local access numbers for external
customers to reduce the costs associated with your company’s toll-free 800 service. However,
when customers call the new local numbers they hear a reorder tone instead of your centralized
IVR.
What is the best solution to this issue?

Refer to the exhibit.

You have received a trouble ticket stating that calls to local PSTN numbers
are failing. To place a call, Cisco Unified CallManager users dial the access code “9,” followed by
seven digits. After entering the debug voice dialpeer command on the H.323 gateway, you have
the user attempt the call again.

Based on the debug output, what is the most likely cause of this problem?

You have received a trouble ticket stating that users are no longer hearing a second dial tone after
pressing 9 to initiate an external call. The trouble ticket states that the second dial tone is played
only after several additional digits are dialed. What is the mostly likely cause of this problem?

Which three capabilities cannot be configured if the default dial peer is matched? (Choose three.)

Refer to the exhibit.

You have received a trouble ticket stating that calls to international numbers
are failing. To place an international call, users dial the access code “9,” followed by “011,” the
country code, and the destination number. After entering the debug isdn q931 command on the
MGCP gateway, you have the user attempt the call again.
Based on the debug output, what is the most likely cause of this problem?