Learn About Cisco IP Telephony for Release 4.x

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The following are questions from MeasureUp’s Practice Test for the Cisco exam 642-444: Cisco IP Telephony for Release 4.x (CIPT-4.x). By passing this exam, you earn credit toward the Cisco Certified Voice Professional (CCVP) certification .

The audience for this exam includes individuals who are responsible for installing, configuring and supporting Voice over IP (VoIP)-related and public switched telephone network (PSTN)-related products. Experience working with Cisco's Unified CallManager will help you prepare for this exam.

Objective: Perform an installation and initial set up of a CallManager cluster.
Sub-objective: Configure DCHP, TFTP and NTP.

Multiple answers, multiple-choice

Users report they can no longer make or receive calls. You log in to the CallManager and see that all services are functional. While troubleshooting, the server administrator informs you that the company DNS server is down. You verify that the DHCP scope is configured to send option 66, but the phones are still not working. What can you do to resolve the issue? (Choose two.)

A.    Configure the IP address of the primary cluster member manually on each phone.
B.    Perform a power reset to each phone.
C.    Force a failover to the secondary cluster member.
D.    Stop and start the Cisco CallManager service.
E.    Configure the DHCP server with option 150.

Answers:
 A, E

Tutorial:
You should configure the DHCP server with option 150. All phones need to know which Trivial File Transfer Protocol (TFTP) server to contact to receive their configuration file. Option 66 provides the host names of the TFTP server and option 150 provides the IP address of the TFTP server. With the IP address, there is no need for DNS resolution.

Although it is not recommended, you could also hard code the IP address of the TFTP server on each phone. However, it is much easier to add option 150 to the DHCP scope.

You should not perform a power reset to each phone. Performing a power reset on each phone will simply restart the boot process. When the phone tries to resolve the TFTP server host name to its IP address, it will fail again.

You should not force a failover to the secondary cluster member. Failing over to the secondary cluster member will not help to resolve the TFTP server host name to its IP address.

You should not stop and start the Cisco CallManager service because doing so does not inform the phones of the IP address of the TFTP server.

References:
IP Phone Startup
Authorized Self-Study Guide Cisco IP Telephony (CIPT), Second Edition
Chapter 3. Cisco Unified CallManager Installation and Upgrades

Objective: Configure CallManager to support a call between any two endpoints on-cluster and off-cluster.
Sub-objective: Describe the purpose and features of SRST and AAR.

Single answer, multiple-choice

You have a centralized CallManager environment with a single remote site. You add the Survivable Remote Site Telephony (SRST) configuration to the router in the remote site. The router configuration is shown below:

Remote_Office(config)#call-manager-fallback
Remote_Office(config-cm-fallback)#access-code fxo 9
Remote_Office(config-cm-fallback)#default-destination 1234
Remote_Office(config-cm-fallback)#dialplan-pattern 1 5555555... .
Remote_Office(config-cm-fallback)#ip source-address 10.1.1.1 port 2000
Remote_Office(config-cm-fallback)#keepalive 30
Remote_Office(config-cm-fallback)#max-ephones 24
Remote_Office(config-cm-fallback)#max-dn 48
Remote_Office(config-cm-fallback)#transfer-pattern 444...
Remote_Office(config-cm-fallback)#voicemail 5001

When the CallManager fails, how many extensions and IP phones will be supported?

A.    24 extensions and 48 IP phones.
B.    30 extensions and 24 IP phones.
C.    48 extensions and 24 IP phones.
D.    48 extensions and 1234 IP phones.

Answer:
C

Tutorial:
After you enter the call-manager-fallback command, you are able to enter subcommands to define parameters for SRST.

To define the maximum number of supported extensions, or DNs, use the max-dn command. In this example, you have set the maximum extensions to 48.

To define the maximum number of supported IP phones, use the max-ephones command. In this example, you have set the maximum IP phones to 24.

Before setting the maximum number of IP phones, it is best practice to refer to the Cisco Web site to verify the maximum number support by the router.

References:
Cisco CallManager System Guide, Release 4.1(3) - System-Level Configuration Settings
Cisco.com
http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/4_1_3/ccmsys/a02sycfg.html

Objective: Given a list of IP phone features, configure the CallManager to support the given feature set.
Sub-objective: Configure call forward.

Single answer, multiple-choice

You configure Call Forward and Pickup Settings for a line as shown in the exhibit.

When someone calls this extension while the line is busy, how will the call be handled?

A.    The call will be forwarded to voice mail.
B.    The call will be forwarded to extension 5000.
C.    The call will be forwarded to extension 5001.
D.    The call will only hear a busy signal.

Answer:
A

Tutorial:
In this example, you have selected to have internal calls forwarded to extension 5000 and external calls forwarded to extension 5001 when the line is busy, but you also selected Voice Mail, so your manual settings will be ignored.

You have many options while configuring call forwarding for a directory number. You can specify a different number to forward the call to for internal and external calls, for busy, no answer and no coverage calls.

When you configure Internal behavior, the respective External behavior will inherit the settings assigned to Internal. You can overwrite the inherited settings manually.

An important caveat is that even if you specify an internal and/or external number to forward to, selecting the Voice Mail option box will overwrite the Coverage/Destination configuration.

References:
Cisco CallManager Features and Services Guide, Release 4.1(3) – Multilevel Precedence and Preemption
Cisco.com
http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/4_1_3/ccmfeat/fsmlpp.html

Objective: Given a specific set of IP telephony applications and tools, configure CallManager to support the applications.
Sub-objective: Install and configure BAT and TAPS to bulk add/manage phones/users.

Multiple answers, multiple-choice

You are installing the Bulk Administrative Tool (BAT) release 4.1(1) for use in your CallManager environment. Which of the following are specifications of BAT? (Choose three.)