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EDC113 CCNP4
ONT Module 1 Lesson 1
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http://portal.techhigh.us/Teachers/mannf/Pages/default.aspx
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Class siteFour Major Sections
AnnouncementsAssignmentsLinksDocuments
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Announcements
•Lesson Breakdowns•Class changes and other information•Current tests available through cisco.netacad.net
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Assignments
•Weekly Assignments
Module purpose and scope
ReadingHomeworkE-labs
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Links and Docs
•LinksSyllabusScheduleHomeworkPresentation
DocumentsArchive of
PresentationsStudent Lab ManualAdditional ReadingsOld Assignments
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Optimizing Converged Cisco Networks (ONT)
Lesson 1.1: The Evolution of Telephony in the Enterprise
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Objectives
Describe the history of the telephone services industry and its affect on modern business practices.
Identify the components of the traditional telephone system.
Describe traditional POTS service.
Describe ISDN & T1 services.
Explain the drivers of converged networks.
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Basic Telephone System
A telephone system has four elements: A telephone set to convert sound to electrical signals and back to sound
One or more central switching facilities
Connections to the central switching facilities
Connections among multiple switching centers across telephone networks
Subscribers connect to the telephone network using: Dedicated wire connections in overhead or underground cables
Radio waves (cellular, satellite, or radiotelephone)
VoIP
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Basic Components of a Modern Telephone System
Fiber
IP
POTS and ADSL
Central Office with Switches
Home Office with Corporate VPN including VoIP
Cellular Phone System
Long Distance and International Connections
Local Loop
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Traditional POTS Services
PSTN or PTT (POTS) has remained practically unchanged for over 100 years offering:
Bi-directional, or full duplex, voice path to carry sound both ways at once
Dial tone and ringing signals
Subscriber dialing
Operator services, such as directory assistance, long distance, and conference calling assistance
Power
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ISDN: A set of standards that allow data and voice to be carried on copper wire from the telephone exchange to customer premises:
BRI: 2 B-channels and 1 D-channel for control
PRI: 23 B-channels (30 in Europe) and 1 D-channel for control
T1 Carrier System: Specification for digital transmission between telephone exchanges and sometimes directly to customer premises. T1 uses copper wire or fiber.
ISDN and T1 Services
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Digital Telephone Services include:Voice mail
Caller ID
Call waiting
Reminder calls
(Three-way) conference calling
Enhanced 911 (in North America)
Centrex
A number of other similar services
Digital Telephone Services
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Centrex (a virtual PBX):Call Transfer
Call Divert – on no reply and on busy calls
Call Waiting
Three-Party Conference
Call Pick Up (Group)
Ring Back
Reminder or Alarm Call
Last Number Redial
Centrex Hotline (non-dialed connection)
Centrex Warm Line (delayed Hotline)
Centrex Hunt Groups, with optional bypass numbers
Typical Centrex telephone. Note the Recall button and the Message
Waiting lamp.
PBX and Centrex
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PBX
May I have a line to Chicago?
PSTN
Is this a business call?
Thank you. One second please.
Chicago Office
Yes it is.
Long-Distance Calling Challenges
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Long-distance trunk lines connect telephone exchanges.
Long-distance services include:OUT-WATS: Flat-rate long-distance calling
IN-WATS: Toll-free calling using 1-8xx numbers
Long-Distance and WATS
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San Jose Office
Tokyo Office
London Office
PBX
PBXPBX
Separate Voice, Video, and Data Networks
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IP WAN
PSTN
Converged Voice, Video, and Data Network
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Self Check
1. What are the 2 levels of ISDN service?
2. What is a Centrex?
3. What is a WATS-type plan?
4. What options are available in WATS plans?
© 2006 Cisco Systems, Inc. All rights reserved.
Summary
Companies have used telephone services for over 100 years as a part of their business practices.
Changing technology and changing enterprise needs have influenced changes in telephony services.
The increasing use of IP transport for data, voice and video has lead to the need for converged networks.
© 2006 Cisco Systems, Inc. All rights reserved.
Resources
Wikipedia Telephone Exchange articlehttp://en.wikipedia.org/wiki/Telephone_exchange
Cisco IP Telephones on Converged Network Enable Rapid Emergency Response
http://newsroom.cisco.com/dlls/partners/success_stories/2001/pss_10-10.html
Making the Business Case for Unified Communicationshttp://www.cisco.com/en/US/netsol/ns340/ns394/ns165/networking_solutions_audience_business_benefit0900aecd80472efb.html
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Lesson 1.2: Describing Converged Network Requirements
Module 1: Converged Network Connectivity Requirements
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Objectives
Explain the Cisco conceptual network models, such as Cisco Enterprise Architecture and Cisco hierarchical network model.
Describe the traffic conditions in a converged network.
Describe the IIN and the SONA framework.
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Traditional Hierarchical Model
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Cisco Enterprise Architecture
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Campus Architecture
IP Communications
mobility
advanced security
Campus Architecture combines a core infrastructure of intelligent switching and routing including:
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Data Center Architecture
requirements for consolidation
business continuance
security
The Data Center is a cohesive, adaptive network architecture supporting:
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Branch Architecture
security
IP communications
advanced application performance supporting thousands of remote locations/users
The Branch allows enterprises to extend head-office applications and services including:
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Teleworker Architecture
Teleworker architecture allows enterprises to securely deliver voice and data services to remote, small or home offices.
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WAN Architecture
WAN architecture offers the convergence of voice, video and data services over a single IP communications network.
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Example: Enterprise Network
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Network Traffic Mix and Requirements
Converged network traffic mix:Voice and video traffic
Voice applications traffic
Mission-critical applications traffic
Transactional traffic
Routing update traffic
Network management traffic
Bulk transfer (best-effort) and scavenger (less-than-best-effort) traffic
Key requirements:Performance (bandwidth, delay, and jitter)
Security (access and transmission)
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Example: Integrated Services in a Converged Network
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Intelligent Information Network (IIN)
IIN integrates networked resources and information assets.
IIN extends intelligence across multiple products and infrastructure layers.
IIN actively participates in the delivery of services and applications.
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Phases of IIN
Three phases in building an IIN are:Integrate transport
Integrate services
Integrate applications
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Cisco SONA Framework
Cisco SONA is an architectural framework.
Cisco SONA brings several advantages to enterprises:Outlines how enterprises can evolve toward the IIN
Illustrates how to build integrated systems across a fully converged intelligent network
Improves flexibility and increases efficiency
Cisco provides an extensive product line, services, proven architectures, and experience to help the enterprises achieve their business goals.
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Cisco SONA Layers
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SONA—Networked Infrastructure Layer
The goal is “anywhere/anytime connectivity.”
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SONA—Interactive Services Layer
voice and collaboration services mobility services security and identity services storage services computer services
application networking services network infrastructure
virtualization services management adaptive management services
Interactive services includes:
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SONA—Application Layer
business applications collaboration applications
Application Layer includes:
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Self Check
1. What are the 3 building blocks of the hierarchical model?
2. Describe the special needs of voice and video traffic.
3. What types of traffic could be considered best-effort and less-than-best-effort?
4. What is AON?
5. What are the 3 layers of SONA?
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The traditional three-layer hierarchical model no longer completely meets the needs of large converged networks carrying voice, video, and data. IIN aligns IT resources with business priorities.
Cisco Enterprise Architecture and SONA provide a framework for deploying converged networks.
Dealing with complex traffic mixes is a key feature of Cisco Enterprise Architecture. The Service layer of SONA addresses the performance and security requirements of converged networks.
IIN aligns IT resources with business priorities.
Cisco SONA provides an evolutionary path to IIN.
Summary
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Q and A
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Resources
Business Overview of Cisco SONAhttp://cisco.com/en/US/netsol/ns340/ns394/ns431/networking_solutions_white_paper0900aecd803efff3.shtml
What is IIN?http://cisco.com/en/US/netsol/ns650/networking_solutions_market_segment_solution.html
Enterprise Architectures Posterhttp://cisco.com/application/pdf/en/us/guest/netsol/ns477/c643/cdccont_0900aecd802843ce.pdf
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