Annex D13 VoIP Call Processors and Endpoints

Question 0

Cisco Unified Communications Manager

Answer 0

Application which runs on a dedicated server providing call processing services for up to 10,000 users

Question 1

Functions of a call processor

Answer 1

Call processing
Device control
Directory Service
Computer Telephony integration
Trunking
Gateway Support

Question 2

Cluster

Answer 2

Multiple servers managed as a single entity, yielding scalability of up to 30,000 users per cluster

Question 3

Publisher Server

Answer 3

Only server whose database can be altered

Question 4

Subscriber Server

Answer 4

Primary call controllers responsible for registering phones and setting up calls

Question 5

Inter Cluster Trunk

Answer 5

Facilitates comm between clusters

Main trunk extension device inside of a CUCM network

Question 6

Four (4) main components of Call Routing in a CUCM networks

Answer 6

Route Patterns
Route Lists
Route Groups
Gateway/trunks

Question 7

Cisco Unified Communications Manager Express (CME)

Answer 7

VoIP mgmt applications which runs on an Integrated Services Router’s IOS

Provide call processing in a VoIP network

Question 8

Dial Peers

Answer 8

Software structure that binds a dialed digit string to a voice port or IP address of the destination network

Required to be programmed when running CME to facilitate calls beyond your local site

Question 9

Power options associated with Cisco IP Phones

Answer 9

Power over Ethernet switches required

VoIp phones in the USMC are not fielded with external power cords

Question 10

Characteristics of a Voice VLAN

Answer 10

Increased performance
Improved manageability
Physical topology independence
Increased Security
It is a common practice to seperate voice and data traffic by utilizing VLANs IOT prevent data applications from reaching voice traffic

Question 11

Role of TFTP Server in IP networking

Answer 11

Serve as a central repository for all required phone configs in the network

Question 12

VoIP telephone Initialization Process

Answer 12

VoIP phone connected to switch and receives power over ethernet

Cisco Discovery Protocol IDs which VLAN the phone should be on and delivers the Voice VLAN

The VOIP phone requests and IP from the DHCP server

VoIP phone contacts TFTP server for configuration file and loads it

VoIP phone registers with the CME/CUCM using Skinny Client Control (SCCP) and is now able to place and receive calls