© 2006 Cisco Systems, Inc. All rights reserved. EDC113 CCNP4 ONT Module 1 Lesson 1

© 2006 Cisco Systems, Inc. All rights reserved.

© 2006 Cisco Systems, Inc. All rights reserved. Class site Four Major Sections Announcements Assignments Links Documents

© 2006 Cisco Systems, Inc. All rights reserved. Announcements Lesson Breakdowns Class changes and other information Current tests available through cisco.netacad.net

© 2006 Cisco Systems, Inc. All rights reserved. Assignments Weekly Assignments Module purpose and scope Reading Homework E-labs

© 2006 Cisco Systems, Inc. All rights reserved. Links and Docs Links Syllabus Schedule Homework Presentation Documents Archive of Presentations Student Lab Manual Additional Readings Old Assignments

© 2006 Cisco Systems, Inc. All rights reserved. Optimizing Converged Cisco Networks (ONT) Lesson 1.1: The Evolution of Telephony in the Enterprise

© 2006 Cisco Systems, Inc. All rights reserved. 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

© 2006 Cisco Systems, Inc. All rights reserved. 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

© 2006 Cisco Systems, Inc. All rights reserved. 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

© 2006 Cisco Systems, Inc. All rights reserved.  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

© 2006 Cisco Systems, Inc. All rights reserved.  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

© 2006 Cisco Systems, Inc. All rights reserved.  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

© 2006 Cisco Systems, Inc. All rights reserved. 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

© 2006 Cisco Systems, Inc. All rights reserved.  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

© 2006 Cisco Systems, Inc. All rights reserved.  San Jose Office  Tokyo Office  London Office PBX Separate Voice, Video, and Data Networks

© 2006 Cisco Systems, Inc. All rights reserved. IP WANPSTN Converged Voice, Video, and Data Network

© 2006 Cisco Systems, Inc. All rights reserved. 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  Cisco IP Telephones on Converged Network Enable Rapid Emergency Response ss_10-10.html  Making the Business Case for Unified Communications ng_solutions_audience_business_benefit0900aecd80472efb.ht ml

© 2006 Cisco Systems, Inc. All rights reserved. Lesson 1.2: Describing Converged Network Requirements Module 1: Converged Network Connectivity Requirements

© 2006 Cisco Systems, Inc. All rights reserved. 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.

© 2006 Cisco Systems, Inc. All rights reserved. Traditional Hierarchical Model

© 2006 Cisco Systems, Inc. All rights reserved. Cisco Enterprise Architecture

© 2006 Cisco Systems, Inc. All rights reserved. Campus Architecture  IP Communications  mobility  advanced security Campus Architecture combines a core infrastructure of intelligent switching and routing including:

© 2006 Cisco Systems, Inc. All rights reserved. Data Center Architecture  requirements for consolidation  business continuance  security The Data Center is a cohesive, adaptive network architecture supporting:

© 2006 Cisco Systems, Inc. All rights reserved. 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:

© 2006 Cisco Systems, Inc. All rights reserved. Teleworker Architecture  Teleworker architecture allows enterprises to securely deliver voice and data services to remote, small or home offices.

© 2006 Cisco Systems, Inc. All rights reserved. WAN Architecture  WAN architecture offers the convergence of voice, video and data services over a single IP communications network.

© 2006 Cisco Systems, Inc. All rights reserved. Example: Enterprise Network

© 2006 Cisco Systems, Inc. All rights reserved. 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)

© 2006 Cisco Systems, Inc. All rights reserved. Example: Integrated Services in a Converged Network

© 2006 Cisco Systems, Inc. All rights reserved. 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.

© 2006 Cisco Systems, Inc. All rights reserved. Phases of IIN  Three phases in building an IIN are: Integrate transport Integrate services Integrate applications

© 2006 Cisco Systems, Inc. All rights reserved. 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.

© 2006 Cisco Systems, Inc. All rights reserved. Cisco SONA Layers

© 2006 Cisco Systems, Inc. All rights reserved. SONA—Networked Infrastructure Layer  The goal is “anywhere/anytime connectivity.”

© 2006 Cisco Systems, Inc. All rights reserved. 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:

© 2006 Cisco Systems, Inc. All rights reserved. SONA—Application Layer  business applications  collaboration applications Application Layer includes:

© 2006 Cisco Systems, Inc. All rights reserved. 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.  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

© 2006 Cisco Systems, Inc. All rights reserved. Q and A

© 2006 Cisco Systems, Inc. All rights reserved. Resources  Business Overview of Cisco SONA olutions_white_paper0900aecd803efff3.shtml  What is IIN? et_segment_solution.html  Enterprise Architectures Poster dccont_0900aecd802843ce.pdf

© 2006 Cisco Systems, Inc. All rights reserved.