Cisco Ccna Voice 3 - Ip Phone Concepts And Registration

Front 1

What are three power sources for a Cisco VoIP phone?

Back 1

1. Cisco Switch PoE
2. Power Patch Panel PoE
3. Power Brick

Front 2

What PoE standards are acceptable for a Cisco VoIP phone?

Back 2

1. 802.3af
2. Cisco prestandard

Front 3

A VLAN is synonymous with ...

Back 3

A broadcast domain
An IP subnet

Front 4

When a Cisco VoIP phone sends data packets to the Cisco switch, which packets are tagged and which are untagged?

Back 4

1. Voice packets tagged
2. Data packets from PC untagged

Front 5

How is the switchport on the Cisco switch configured? Trunk or access?

Back 5

It is an access port supporting tagged voice vlan traffic.

Front 6

What are the IOS commands to setup voice and data vlans?

Back 6

#conf term
#vlan <number>
#name VOICE
#vlan <number>
#name DATA
#end
#show vlan brief

Front 7

What are the IOS commands to configure a switchport for a VoIP phone and PC?

Back 7

#conf term
#int gi<n>
#switchport mode access
#spanning-tree portfast
#switchport access vlan <x>
#switchport voice vlan <y>
#end
#show vlan brief

Front 8

Describe the six-step boot process for a Cisco VoIP phone

Back 8

1. Phone receives power
2. Switch delivers VLAN info via CDP
3. Phone uses DHCP to request IP addr
4. DHCP offer includes option 150 tftp server
5. Phone downloads config file from tftp
6. Phone contacts call processing server from list in config

Front 9

List the IOS commands to configure a DHCP pool for PCs

Back 9

#conf t
#ip dhcp excluded-addr <start ip> <end ip>
#dhcp pool <NAME>
#network <addr> <mask>
#default-router <addr>
#dns-server <addr>
#exit

Front 10

List the IOS commands to configure a DHCP pool for phones

Back 10

#conf t
#ip dhcp excluded-addr <start ip> <end ip>
#dhcp pool <NAME>
#network <addr> <mask>
#default-router <addr>
#option 150 ip <addr>
#dns-server <addr>
#exit

Front 11

Describe the format of the configuration file name for a Cisco VoIP phone.

Back 11

SEP<Phone MAC>.cnf.xml

Front 12

What are the most important contents of the VoIP phone config file?

Back 12

THe IP addresses of up to 3 CUCM or CME servers used for registration.

Front 13

If no configuration file exists on the tftp server for a phone, what is the default file name and what is its use?

Back 13

XMLDefault.cnf.xml is used for auto-registration

Front 14

What is the IOS command to configure a Cisco switch/router for NTP?

Back 14

#conf term
#ntp server <ip addr>
#clock timezone <NAME> <OFFSET>
#end
#show clock

Front 15

Describe the phone registration process.

Back 15

After phone receives config from tftp, it attempts to contact first tftp server on list. Moves down list until sucess. Then uses SCCP (skinny) or SIP to register, depending on firmware.