Transcript ONT Mod 1: PresenONT Module 1 – Converged Network

EDC113 CCNP4
ONT Module 1 Lesson 1
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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.
© 2006 Cisco Systems, Inc. All rights reserved.
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
Long Distance and
International Connections
IP
Central Office
with Switches
Fiber
Local
Loop
POTS and
ADSL
Home Office with
Corporate VPN
including VoIP
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Cellular Phone
System
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 and T1 Services
 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.
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Digital Telephone Services
 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
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PBX and Centrex
 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
Typical Centrex telephone. Note the
Recall button and the Message
Last Number Redial
Waiting lamp.
Centrex Hotline (non-dialed connection)
Centrex Warm Line (delayed Hotline)
Centrex Hunt Groups, with optional bypass numbers
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Long-Distance Calling Challenges
May I have a line
to Chicago?
Is this a
business call?
PSTN
Yes it is.
Thank you. One
second please.
Chicago Office
PBX
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Long-Distance and WATS
 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
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Separate Voice, Video, and Data Networks
 London
Office
 San Jose
Office
PBX
PBX
 Tokyo
Office
PBX
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Converged Voice, Video, and Data Network
PSTN
IP WAN
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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 article
http://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/p
ss_10-10.html
 Making the Business Case for Unified Communications
http://www.cisco.com/en/US/netsol/ns340/ns394/ns165/networki
ng_solutions_audience_business_benefit0900aecd80472efb.ht
ml
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Module 1:
Converged Network
Connectivity
Requirements
Lesson 1.2: Describing Converged Network 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
Campus Architecture combines a core infrastructure
of intelligent switching and routing including:
 IP Communications
 mobility
 advanced security
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Data Center Architecture
The Data Center is a cohesive, adaptive network
architecture supporting:
 requirements for consolidation
 business continuance
 security
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Branch Architecture
The Branch allows enterprises to extend head-office
applications and services including:
 security
 IP communications
 advanced application performance supporting
thousands of remote locations/users
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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
Interactive services includes:
 voice and collaboration
services
 mobility services
 security and identity services
 storage services
 computer services
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 application networking services
 network infrastructure
virtualization
 services management
 adaptive management services
SONA—Application Layer
Application Layer includes:
 business applications
 collaboration applications
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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?
© 2006 Cisco Systems, Inc. All rights reserved.
Summary
 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.
© 2006 Cisco Systems, Inc. All rights reserved.
Q and A
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Resources
 Business Overview of Cisco SONA
http://cisco.com/en/US/netsol/ns340/ns394/ns431/networking_s
olutions_white_paper0900aecd803efff3.shtml
 What is IIN?
http://cisco.com/en/US/netsol/ns650/networking_solutions_mark
et_segment_solution.html
 Enterprise Architectures Poster
http://cisco.com/application/pdf/en/us/guest/netsol/ns477/c643/c
dccont_0900aecd802843ce.pdf
© 2006 Cisco Systems, Inc. All rights reserved.
© 2006 Cisco Systems, Inc. All rights reserved.