1
Overview
Cisco IP Telephony (CIPT) is an instructor-led course presented by Cisco
Systems, Inc. training partners to their end-user customers. This five-day course
focuses on using Cisco CallManager and other IP telephony components
connected in local area networks (LANs) and wide area networks (WANs).
Upon completion of this training course, you will be able to select, connect,
configure, and troubleshoot the various Cisco IP telephony devices.
This chapter highlights the course prerequisites and course highlights as well as
some administrative issues. It includes the following topics:
■
Objectives
■
Prerequisites
■
General Administration
■
Sources of Information
■
Course Syllabus
■
Graphic Symbols 1-2 Cisco IP Telephony Copyright  2000, Cisco Systems, Inc.
Course Objectives
This section lists the course objectives.
? 2000, Cisco Systems, Inc.
www.cisco.com

www.cisco.com
CIPT v2.0? -4
IP WAN
PSTN
Rest of
World
Telecommuter
Branch Offices
Large Campus
(Up to 10,000 users)
A
A
What We Are Going to Build
What We Are Going to Build
With Call
Processing
Without Call
Processing
Primary Inter-Site Voice Path
Secondary Inter-Site Voice Path
X
X

The figure shows a high-level overview of a CIPT network that you should be
able to build at the end of this class. To accomplish this course goal, you will be
taught how to install Cisco CallManager and configure other IP telephony
devices in a LAN and WAN environment. This includes the following tasks:
■
Install Cisco CallManager software and supporting services.
■

an intranet
• Basic ability with binary and
hexadecimal numbering
• Use Windows 2000 to run
multiple applications
• Exposure to the Internet or
an intranet
• Basic ability with binary and
hexadecimal numbering
Interconnecting Cisco
Network Devices
(ICND)
Interconnecting Cisco
Network Devices
(ICND)
• Fundamental network device
roles
• Understand the
layers of the ISO/OSI
reference model
• Fundamental network device
roles
• Understand the
layers of the ISO/OSI
reference model
Prerequisites
Prerequisites
Cisco Voice over IP –
Frame Relay and ATM
(CVOICE)

Fundamental network device roles (for example, hub, bridge, router,
and switch)
■
The Open System Interconnection (OSI) reference model
■
The ability to use Windows 2000 to run multiple applications
■
Exposure to accessing the Internet or an intranet
■
Basic knowledge of binary and hexadecimal numbering
■
Telephony and IP telephony basic concepts
■
Building VoIP networks–gained from the Cisco course, Cisco Voice Over
Frame Relay, ATM, and IP v2.0 (CVOICE).

Copyright  2000, Cisco Systems, Inc. Cisco IP Telephony Introduction 1-5

1-6 Cisco IP Telephony Copyright  2000, Cisco Systems, Inc.
Participant Role
This section discusses your responsibilities as a student.
? 2000, Cisco Systems, Inc.
www.cisco.com
CIPT v2.0? -6
Student role
•
Meet prerequisites
•
Introduce yourself
•

Briefly describe your experience with installing and configuring Cisco network
devices and with internetworking in general, and also how your experience
helped you meet the prerequisites for this course.
You should also state what you expect to learn from this course.

1-8 Cisco IP Telephony Copyright  2000, Cisco Systems, Inc.
General Administration
This section highlights miscellaneous administrative tasks that must be
addressed.
? 2000, Cisco Systems, Inc.
www.cisco.com
CIPT v2.0? -8
General Administration
General Administration
Class-related
• Sign-in sheet
• Length and times
• Participant materials
• Attire
Facilities-related
• Rest rooms
• Site emergency
procedures
• Break and lunch
room locations
• Communications

The instructor will discuss the administrative issues in detail so you will know
exactly what to expect from both the class and facilities. The following items
will be discussed:

Systems web site or on CD-ROM. These supporting materials are available in
HTML format, and as manuals and release notes.
To learn more about the subjects covered in this course, feel free to access the
following sources of information:
■
Cisco Documentation CD-ROM or www.cisco.com
■
ITM CD-ROM or www.cisco.com
■
Cisco IOS 12.0 Configuration Guide and Command Reference Guide
■
Catalyst 1900 Series Installation and Configuration Guide
All of these documents can all be found at .

1-10 Cisco IP Telephony Copyright  2000, Cisco Systems, Inc.
Course Syllabus
This section discusses the week’s schedule.
© 2000, Cisco Systems, Inc.
www.cisco.com
CIPT v2.0—1-10
Course Syllabus
Course Syllabus
Cisco IP Telephony
Introduction
Introduction to Cisco
AVVID
Primary CIPT
Components
Understanding DHCP
and TFTP

The purpose of the module is to introduce you to the training room and
the CIPT network environment. This section provides a review of
networking fundamentals.
Module 1 includes the following chapters:
■
Chapter 1Cisco IP Telephony Introduction
■
Chapter 2Introduction to Cisco AVVID
■
Chapter 3Primary CIPT Components
■
Chapter 4 Understanding DHCP and TFTP
■
Chapter 5 Cisco CallManager
Copyright  2000, Cisco Systems, Inc. Cisco IP Telephony Introduction 1-11

Module 2, Building a CIPT Campus Solution
The purpose of the module is to introduce you to CIPT fundamentals.
You will learn to configure Cisco CallManager and other primary
CIPT components in a LAN environment.
Module 2 includes the following chapters:
■
Chapter 6 Cisco CallManager Services
■
Chapter 7 Dial Plan Architecture
■
Chapter 8 Cisco Access Gateways

WAN loud



Access
server
ISDN
switch
Cisco CallManager
Server
Web Server

Graphic Symbols
Graphic Symbols
Bridge
Switch
Router

Ethernet Serial Line

Fast Ethernet
File ServerPersonal
computer
Cisco IP
Phone
VLAN or Cluster
(Color May Vary)
PBX
Circuit Switched
Line

■
Objectives
■
Cisco AVVID Architecture
■
Convergence
■
End-to-End Architecture
■
IP Telephony Design Goals
■
Deployment Models
■
Written Exercises
■
Summary
■
Review Questions

2-2 Cisco IP Telephony Copyright  2000, Cisco Systems, Inc.
Objectives
This section lists the chapter objectives.
? 2000, Cisco Systems, Inc.
www.cisco.com
CIPT v2.0? -3
Objectives
Objectives
Upon completion of this chapter, you will
be able to perform the following tasks:
• List the four functional groups of the AVVID

Adaptive Open
Adaptive Open
CallManager
CallManager
Directory
Directory
Call Admission, Call Routing
Call Admission, Call Routing
Call Processing
Call Processing
IP Phone
IP Phone
SoftPhone
SoftPhone
PC
PC
Video
Video
Clients
Clients
Applications
Applications
TAPI, JTAPI, SMDI
TAPI, JTAPI, SMDI
I
Cisco IPCC
Cisco IPCC
Cisco uOne
Cisco uOne
Gateway

2-4 Cisco IP Telephony Copyright  2000, Cisco Systems, Inc.
Convergence
This section introduces the concept of converged networks.
? 2000, Cisco Systems, Inc.
www.cisco.com
CIPT v2.0? -5
Converging to Single Infrastructure
PBX
IP WAN
Catalyst
Backbone
Gigabit Ethernet
End User PC
100M Ethernet
Voice Network
IP Data Network
Switches
Routers
PSTN
Today eparate Infrastructures



Proprietary
digital phones

In the figure above you see two separate networks, one for voice and one for
data. Today most voice and data networks are separate. This involves two
separate skill sets to support each network, which implies that there are two
departments, each supporting a company’s voice and data network.

C
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n
n
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c
t
i
o
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S
w
i
t
c
h
i
n
g
PSTN
Tie
Line
P
B
X

P
h
o

i
n
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C
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c
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i
o
n
s

l
i
e
n
t
s
MCS 7800
Series Server
Ethernet
LAN Switch
Voice Enabled
Router or GatewayIP Telephony Architecture also has four categories:
■
Call Processing
■
Line Connections
■
Switching
■
Trunk Connections
In the IP Telephony architecture, the Cisco CallManager does the call processing
of digit analysis, routing and other call processing functions. IP telephony the
line connections uses connects to IP Phones, Softphones and other IP telephony
clients or endpoints. Ethernet LAN switching products performed the switching
functions are by and the trunk connections use voice enabled router and other IP
telephony gateways.


Scalable
■
Open Architecture
■
Adaptive and Available

2-8 Cisco IP Telephony Copyright  2000, Cisco Systems, Inc.
Convergence with Cisco AVVID
? 2000, Cisco Systems, Inc.
www.cisco.com
CIPT v2.0? -7
Gateways
Switches
Routers
Convergence with Cisco
AVVID
Convergence with Cisco
AVVID
Soft Phone
IP Phones
PCs
Video
Intelligent
Network
Services
Intelligent
Network
Services
Cisco IP Fabric
Clients

Content
Content
Server
Server
Content
Content
Servers
Servers
S
e
r
v
i
c
e
S
u
p
p
o
r
t
M
a
n
a
g
e
m
e

CallManager
IP WAN
Headquarters
Branch Office
Telecommuter
Voice Messaging
Primary Inter-site Voice Path
Secondary Inter-site Voice Path

The figure depicts the components of the Cisco AVVID end-to-end architecture
model. Ideally the Cisco AVVID end-to-end architecture will not have a Public
Switched Telephone Network (PSTN) for backup, only redundant IP WAN
networks. For initial deployment and interoperability the IP WAN is the primary
Inter-site Voice Path and the PSTN is the secondary Inter-site Voice Path.
The next section describes how the IP WAN and PSTN are used in a Cisco IP
telephony network design.

2-10 Cisco IP Telephony Copyright  2000, Cisco Systems, Inc.
IP Telephony Design Goals
This section introduces IP telephony design.
© 2000, Cisco Systems, Inc.
www.cisco.com
CIPT v2.0—2-11
IP Telephony Design Goals
IP Telephony Design Goals
Router plus
Voice Gateway
PSTN
PSTN
Router/GW

the rest of the world. The PSTN is for back up use if the IP WAN should go
down or bandwidth is unavailable.
The branch office call processing is done at headquarters and phone calls
between the branch office and headquarters will be placed over the IP WAN. If
the IP WAN goes down, then the calls can use the PSTN to connect using the
voice enabled access routers.
With the abundance of IP to the home, now the rest of the world would access
the IP WAN to call headquarters.

Copyright  2000, Cisco Systems, Inc. Introduction to Cisco AVVID 2-11
Deployment Models
In the AVVID designs based on a CallManager 3.0 environment, three basic
deployment models are recommended. This section will give a high level
overview of each model and the boundaries in which these designs should be
kept. This will provide you with some guidance as to when and why to select a
particular design. Subsequent chapters and sections will delve into much more
detail of each deployment model. The flow of this section is structured to
emulate the labs in this course where each of the deployment models build upon
each of these as it progresses.
? 2000, Cisco Systems, Inc.
www.cisco.com
CIPT v2.0? -10
Three Deployment Models
Three Deployment Models
•
Isolated deployment
•
Multi-site IP WAN deployments—
(distributed call processing model)
•

Directory
Msg
Msg
Store
Store
uOne
Gateserver
Up to 10,000 users per campus
CallManager + voice messaging at each site
Up to 6 distributed CallManagers in a cluster
Redundancy + equipment will vary with campus size

The above figure is of an individual or isolated deployment. This deployment
model must adhere to the following design characteristics:
■
CallManager/CallManager cluster at each campus to provide scalable call
control
■
Maximum of 10,000 users per cluster
■
Maximum of 6 CallManagers in a cluster (with specific design requirements)
■
Maximum of 2500 users registered with a CallManager at any time (after
failover)
■
Use of PSTN only for networking multiple sites and all external calls
■
DSP (Digital Signal Processor) resources for conferencing at each site
■
Voice/unified messaging components at each site