A network engineer receives a report about poor quality on an active call between the IP
phone of user A over the WAN to the IP phone of user B. Using web access to the phone, the
network engineer remotely checks call statistics such as jitter, network delay, and packet loss.
Calculated packet loss is 3%, average jitter is 20 ms, network delay is 1 ms, and conceal
seconds is 7.
What is the most likely problem with this call?

A company has invested in an on-premises VoIP solution. For design simplicity purposes,
network engineers have opted to use a single VLAN for both data and voice traffic. Shortly
after implementing IP phones, customers are reporting problems.
Which two potential problems may be reported about the calls as a result of this design
decision? (Choose two.)

The IP phone of user A is registered with Cisco Unified Communications Manager
subscriber1 while the IP phone of user B is registered with subscriber2. User A is speaking to
user B on an active call. A junior network engineer mistakenly reboots subscriber1.
What effect does this have on the call?

What is needed to support SIP Early Media?

Which component is needed for a voice call to be processed between the enterprise Cisco
Unified Communications system and a cell phone via the PSTN?

An end user has an 7945 IP phone, but is unable to launch any of the IP phone applications.
A network engineer has confirmed that the device is subscribed to the appropriate
applications in Cisco Unified Communications Manager.
How should the engineer instruct the user to launch the IP phone applications?

An end user is experiencing performance issues with their IP phone. Which phone feature
could the administrator configure to allow the end user to notify them when issues occur?

A field technician must reset a single 7965 IP phone so that it will be discovered on the
network again and request an IP address from DCHP. Which steps should the network
engineer provide?

A technician is checking services in response to the recent failed delivery of all voicemails.
Which service must be running for message delivery to function properly?

An engineer receives an isolated report that the customer can make calls successfully from
an IP phone to other IP phones, but receives an error recording when attempting to call
someone over the PSTN. The user cannot recall the error recording to provide the specific
error message. Which two steps should the network engineer take to begin troubleshooting?
(Choose two.)