Transcript Intro to Cisco IP Telephony

Intro to Cisco IP Telephony
Solutions
By Prof. Yousif
@
Valencia Community College
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Let us get acquainted!
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What is your name and how would you like us to address
you?
Is this your first networking/telephony class?
Are you taking any other networking/telephony classes?
What is your background in networking/Telephony?
Are you a career changer?
Why did you sign up for this class and what are your
expectations?
What is your next step in technical training and industry
certification after finishing this class?
Interests, Academic Goals, and Industry Certifications
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What is IP Telephony
• General term for the technologies that use the Internet Protocol's
packet-switched connections to exchange voice, fax, and other
forms of information that have traditionally been carried over the
dedicated circuit-switched connections of the public switched
telephone network (PSTN).
www.whichvoip.com/voip/voip_dictionary.htm
• The transmission of voice and fax phone calls over data networks
that uses the Internet Protocol (IP). IP telephony is the result of the
transformation of the circuit-switched telephone network to a packetbased network that deploys voice-compression algorithms and
flexible and sophisticated transmission techniques, and delivers
richer services using only a fraction of traditional digital telephony's
usual bandwidth.
www.voip-architecture.com/glossary/glossary.html
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What is IP Telephony
• IP telephony combines different types of communications-such as
data, voice, and video-over a single packet cell-based infrastructure.
IP telephony extends the value of the network with these
nontraditional applications. By combining different types of traffic on
a single network connection, small and medium-sized businesses
and small branch offices can dramatically reduce the costs of their
voice and data networks. www.spacespin.com/glossary.html
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Circuit-Switched VS. Packet Switched networks
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IPT Applications
• An IPT solution offers the option to implement
XML applications to users’ phones. These
applications can be customized to an
organization’s specific needs. A popular
application, Unified Messaging, will allow users
to retrieve their voicemails via email as well as
the reverse – emails read to you while checking
voicemail. This provides users flexibility
regarding message retrieval resulting in
improved communications and ultimately better
care for customers.
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Another Example: http://www.phonetop.com/phonetop3.nsf/20040310
IPT Applications Videos
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Key Benefits of VoIP
• Elimination of expensive leased lines, PBXs and PBX lines and
PSTN lines with recurring monthly costs
• Ease of adds, moves and changes.
• Elimination of costly tie lines between multiple PBXs
• Reduction of supported PBXs resulting in the reduction of annual
maintenance and support contracts
• Reduction of costly long distance charges between branch offices
via toll-bypass – sending voice traffic over the existing data network
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The different Implementation of
VoIP
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Considerations for End-to-End VoIP
Solutions
Directory Services,
Web Content, and
Unified Messaging
Using Clustering to
ensure the
availability of
resources to handle
call processing
Ensuring quality and
reliability of the
voice network
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CIPT Design Objectives
PSTN is available in the case of the IPWAN
going down or becoming congested
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Cisco IPT Components
CCM is the softwarebased IP call
Processing Engine
Digital Gateway: Voice T1 to
connect legacy PBXs.
Analog Gateways: Connect
legacy analog telephony
equipment such as analog
phones and faxes
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Cisco AVVID Architecture
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Cisco IP Phones
Cisco IP Phone Documentation
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Cisco IP Phone 7970
•IPT Applications Videos
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2600 Gateways
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Switches
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Lab1
Physical Connections and Lab Setup
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Cisco Call Manager
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The System Menu
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Server: Specify the IP address of the server
Cisco CallManager: Set propertied for CallMangers
in the same cluster “share the same database”.
Example: port numbers
Cisco CallManager group: Each group can have up
to three CallMangers. One serves as the primary
and the other members of the group serve as
backups
Date/Time group: Define time Zones for different
devices.
Device Defaults: Default characteristics for each
type of device within a call manager cluster.
Region: Used to specify the voice codec used for
calls within a region and between regions. The
voice codec is used to determine the maximum
amount of bandwidth used per call
Device pools: Used to apply common
characteristics for a group of devices
Enterprise Parameters: Settings that apply to all
devices and services within the same cluster. That
is where a newly installed CallManager gets the
initial configuration values from.
Location: Locations used to implement call
admission control in a centralized call processing
system. Call admission control is used to regulate
voice quality by limiting the amount of bandwidth
available for calls over links between locations.
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The Route Plan Menu
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Partition: A list of route Patterns
Calling Search space: Ordered list of route
partitions
Route Filter: Route filters, along with route
patterns, use dialed digits string to determine how a
call is processed
Route Group: A list of ordered gateways
Route List: Assigns a set of route groups to a route
pattern and determines the order in which the route
groups are accessed.
Route Pattern: A route pattern is a string of digits or
an address and set of associated digit
manipulations that can be assigned to a route list.
Route patterns are used in conjunction with route
lists and route filters to direct calls to a specific
gateway and perform digit manipulation (include,
exclude or modify specific digits).
Translation Patterns: Use to manipulate dialed
digits before routing a call. Used to configure
Private Line Automatic Ring Down (PLAR)
External Route Plan Wizard: An easy way to
configure external routing to PSTN, to PBXs, or to
other CCMs.
Route Plan Report: Lists all route patterns,
translation patterns, conference numbers, call pick
up numbers, and call park numbers.
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The Service Menu
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Used to configure CCM to interface with
voice mail servers.
Used to configure CCM to interface with
conference bridges which allows several
simultaneous, multi-party conference
Use to configure CCM to interface with a
Media termination point (MTP)
Used to configure transcoders. Transcoders
Are used to convert from one compression
type to another (G711, G723, and G.729).
Used to configure Service Parameters
where you can add or delete services on the
selected server (For example TFTP service).
Used to configure Music on Hold
Used to configure Media Resource Group:
MRG is a logical group of transcoders MOH
servers and conference bridges.
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Voice Compression
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Voice Compression Example
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The Feature Menu
• Used to configure
features such as
– Call Park: Place a call on
hold at a specific
extension. The parked call
can be retrieved from any
phone in the cluster
– Call Pickup: Allows you to
answer a call that comes in
on a directory number that
is different from yours
– Cisco IP Phone Services:
enables XML applications
on the phone
– Meet-Me number: Multiuser meetings.
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The Device Menu
• Here you can add,
delete, or search for
devices such as
Phones, gateways,
and gatekeepers
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The User Menu
• Maintaining and
displaying CCM’s
users
• The global directory
maintains the
associations of
devices with users.
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The Application Menu
• It is through the
application menu that you
can install plug-ins to
extend the functionality of
the Cisco CallManager.
Examples:
– Cisco Web Attendant Plugin: Used by a receptionist
to answer and transfer calls
– JTAPI Plug-In: Allows
computers to host
applications that can
access CallManger via
Java Telephony Application
Programming Interface
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The Help Menu
• “Page” sensitive help
is available. If you
need help on a
particular page, you
will be linked to the
online help page that
corresponds to the
displayed page.
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Context and Index Help
• CCM Administration Guide: Step-by-Step
instructions to configure main menu items
and submenus.
• CCM System Guide: Information on Cisco
IP Telephony solutions, CIPT components,
and CCM Clusters.
• The CCM Serviceability: Used in
monitoring and troubleshooting CIPT.
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Lab 2
Network Configurations
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