Data Communication II
Switching and Routing Technologies for Converged Networks
2-day training seminar, $1,295
To learn about Data Communication I Info on this event
Dates, Locations and Registration


Designing business-capable VOIP and converged networks requires a comprehensive understanding of the components, technologies, and the tradeoffs. Network professionals must be familiar with switching and routing technologies as well as the quality of service (QoS) functions that will be necessary to ensure enterprise grade voice services. This course is designed to provide you with the comprehensive background you will need to work effectively with both local and wide area VOIP systems.

By attending this training seminar, you will :

  • Understand (with detail) technologies that are involved in VOIP and how they should be implemented to ensure an enterprise-grade VOIP solution.
  • Review the OSI Reference Model and the major TCP/IP protocols that are used to support data and IP telephony, both media (e.g. RTP, UDP) and signaling (e.g. H.323, SIP).

  • Learn about the security issues surrounding IP telephony, the major vulnerabilities, attack strategies, and gain an in-depth knowledge of essential elements of a security defense strategy.

  • Understand technologies used in converged networks including packet shaping, QoS coordination, voice/video coding, signaling systems, and how they must be configured to insure optimal performance.

  • Learn about quality issues that come into play with IP telephony, the required performance levels we must maintain, and the standard mechanisms for measuring voice quality.

  • Learn about the configuration of hybrid versus IP PBX systems, and the issues involved in configuring local area networks to support voice services.

  • Overview the 802.11/Wi-Fi technology used in wireless LANs, and identify the capacity, security, quality of service and other features required for WLAN voice.

  • Be able to compare the full range of wide area data services including MPLS VPNs, and their general capabilities, pricing elements, and their suitability for voice.

  • Understand the overall process of troubleshooting a VOIP network, the types of tools that are available, the typical problems encountered, and their likely causes.

Communications analysts/managers, equipment vendors, and carrier representatives who need a detailed, business-oriented understanding of VOIP applications, services, and technologies.

Participants can also take this training course back to back with:

Data Communication I: Understanding Data and IP Networks Info on this event

Course outline

1.Voice System Configurations and Design

  • Voice Network Services and Requirements
  • Traditional Voice Switching Systems:
    • PBX and KTS
    • Trunks and Stations
    • PBX versus Centrex
    • System Features:
      • Transfer, Conference, Call Forward, etc.
      • Automatic Route Selection (ARS)
      • Call Detail Recording (CDR)
  • Integrated Components:
    • Voicemail
    • Automatic Call Distributors (ACDs)
    • Interactive Voice Response (IVR)
    • Automated Attendant
  • Voice Network Services
    • Network Interfaces: Analog Loop/Ground Start, DS-1, ISDN BRI/PRI
    • Local Service
    • Long Distance Options: Volume Discounts, Toll-Free, SDNs/VPNs
    • Tie Lines: DS-1, PRI, Q.Sig
  • Traffic Engineering for Voice Networks
    • Traffic Engineering Terms and Concepts: Traffic Load, P-Grade of Service
    • Traffic Engineering: Erlang B, C, and Extended Erlang B
    • Conducting a Voice Traffic Study

2. The VOIP Market

  • Fundamental Justification: Direct and Indirect Cost Savings
  • Local VOIP Solutions
    • IP PBX
    • Hybrid IP PBX
    • Voice over Wireless LANs
  • Enterprise Wide Area VOIP
    • Enterprise Router Networks
    • Remote Access/Teleworker Solutions
    • IP Trunking Service
  • Unified Communications Systems (UCS)
    • Concepts and Definition
    • Major Components
    • UCS Features:
      • Presence
      • Integrated Messaging
      • Business Process Integration
  • Consumer VOIP
    • Cable Telephony, FTTx, Vonage, Skype
    • Click-to-Call Services

3. TCP/IP Protocols for VOIP

  • OSI Reference Model
  • TCP/IP Model
    • Application Protocols: FTP, SMTP/POP. Telnet, HTTP, RTP
    • Transport Protocols: TCP, UDP
    • Internetwork Protocols: IP, ICMP, ARP
    • Network Access Protocols: Ethernet, Wi-Fi, PPP, Frame Relay, DOCSIS, etc.
  • VOIP Protocols
    • Media Transport: RTP, UDP, IP
    • Signaling: H.323, SIP, MGCP (RFC 3435), Megaco (RFC 3425/H.248)
  • Real time Transport Protocol (RTP) Operation
    • Time Stamping, Sequencing
    • Jitter Buffers: Fixed Adaptive
  • Real Time Control Protocol (RTCP)/RTCP Extended Reports
  • VOIP Signaling Protocols
    • ISDN D Channel Signaling: Q.921, Q.931
    • Session Initiation Protocol (SIP)
    • H.323
    • Megaco/H.248
    • Media Gateway Control Protocol (MGCP)

4. VOIP System Components

  • User Devices
    • IP/Ethernet Handsets
    • Power over Ethernet (802.3af, 802.3at)
    • SIP Phones
    • Softphone Clients: Laptop, PDA
    • Wi-Fi Handsets
    • Wi-Fi/Cellular Handsets
  • Telephony Server/Softswitch
  • Packet Transport Network
    • LAN Switch
    • Wide Area Router Networks: Private Line, Frame Relay, IP, MPLS-VPN
  • Gateways
    • Trunk Gateway
    • Station Gateway
      • Other Elements
    • Session Border Controller
    • Multipoint Conferencing Unit (MCO)

5. VOIP Security

  • Attack Techniques
    • Dictionary Attack
    • Brute Force Attack
    • War Dialing
    • Buffer Overflows
    • Trojans
    • Denial of Service/Distributed Denial of Service
    • Spyware/Key Loggers
    • Rootkits
    • Phishing/Social Engineering
  • Vulnerabilities
    • Authentication Hijack
    • Eavesdropping
    • Signaling Manipulation
    • ARP Poisoning/Man-in-the-Middle
    • Worms, Viruses, Malware
    • Theft of Service
    • Spam over Internet Telephony (SPIT)
    • Management Port Access
  • Security Configuration Elements
    • Firewalls
    • DMZ/Screened Subnets
    • Antivirus Software
    • Network Access Control (NAC)
    • Intrusion Detection/Intrusion Prevention Systems
    • Encryption
      • Key Features: Algorithm, Key Length, Key Refresh
      • Algorithms: RC-4, DES, 3DES, AES
      • Implementations: Secure Tunnel VPN, Secure Shell, Secure RTP, Wi-Fi (WEP, WPA, WPA/2)

6. VOIP Technologies

  • Packet Network Characteristics
    • Delay
    • Jitter
    • Packet Loss
    • QoS Impact
  • Voice Coding:
    • Major Issues: Bit Rate, Delay, Loss Tolerance
    • Encoding/Compression Techniques
      • Pulse Code Modulation- G.711: A-Law, µ-Law
      • ADPCM- G.726
      • Wideband: G.722
      • G.729A
      • G.723.1
  • Video over IP
    • Video Compression: Standard Definition, High Definition Bit Rates
    • ISDN versus Packet-based Video Systems
    • Video Coding Options:
      • Analog: NTSC, PAL, SECAM
      • MPEG2, MPEG3, MPEG4
      • H.320, H.323, H.261 (CIF, QCIF), H.262, H.263, H.264
      • T.120—Multimedia Conferencing

7. VOIP Quality Issues

  • Voice Quality Measurements
    • “Toll Quality”
    • Absolute Category Rating: MOS Scores
    • Perceptual Evaluation of Speech Quality (PESQ): ITU P.861, P.862, P.563
    • R-Factors ETSI TS 101 329-5, ITU G.107
  • Quality Issues In IP Telephony
    • Sound Quality: Voice Coding/Packet Loss
    • Transit Delay/Jitter
    • Clipping
    • Echo Control
  • Other Quality Issues: Blocking, Dial Tone Delay, Disconnects, etc.

8. LAN Issues for IP PBX Systems

  • LAN Infrastructure
    • Fully Switched Configuration
    • Power over Ethernet (802.3af/ax):
      • Mid-Span versus End-Span
      • Heat Dissipation Issues
      • UPS/Battery Back-Up
  • LAN Protocol Features
    • Virtual LANs: 802.1q
    • Priority: 802.1p
  • IP PBX Configuration
    • Hybrid PBX versus IP PBX
    • Telephony Servers
    • IP/Ethernet Handsets and Softphones
    • Gateways: Trunk, Station
    • Signaling Options, H.323, Session Initiation Protocol (SIP)
  • Configuration Recommendations

9. WLANs for Voice

  • WLAN Basics
    • WLAN Configuration Options
    • General Capabilities/Limitations
    • Radio Links: 802.11a, b, g, and n
  • WLAN Switches
    • Network Design
    • Configuration Options: Centralized, Distributed
  • WLAN Voice Configuration
    • WLAN Infrastructure Requirements
    • Handsets
      • Wi-Fi
      • Wi-Fi/Cellular
      • Softphones
  • Technical Requirements for WLAN Voice
    • Security Options: WEP, WPA, WPA2, 802.1x
    • Quality of Service (QoS) Options:
      • 802.11e/Wi-Fi Multi-Media (WMM), HCCA/ WMM-Scheduled Access
      • SpectraLink Voice Priority (SVP)
      • Meru's Air Traffic Control
  • Other VoWLAN Issues
    • Roaming
    • Battery Life
    • Call Access Control/Load Balancing
  • WLAN Voice Configuration Recommendations

10. Implementing VOIP over Wide Area Services

  • Packet Service Distinctions:
    • Connection Oriented versus Connectionless
    • Switched and Permanent Virtual Circuits (SVCs and PVCs)
    • Best Effort versus QoS-Capable Packet Services
  • Quality of Service Options
    • Layer 2: 802.1p, 802.11e, DOCSIS
    • Layer 3: DiffServ and MPLS
    • QoS Mapping Requirements
  • Private Line
    • Transmission Rates
    • DSUs/CSUs
  • Frame Relay
    • Network Configuration
    • Performance Guarantees/Committed Information Rates
    • Pricing Elements
    • Implementing QoS Over Frame Relay
  • Basic IP Service
    • Best Effort Concept
    • Security Requirements
    • Using Basic Internet Service for VOIP
  • MPLS Virtual Private Networks/RFC 2547bis
    • Basic Concepts
    • QoS Capabilities/Limitations
    • Excess Traffic Handling
    • Security Features
    • Pricing Elements

11. Troubleshooting VOIP Networks

  • Basic Tools
    • Ping, Trace Route, SNMP, RMON
    • QoS Measurement Tools
    • Traffic Monitors
    • Protocol Analyzers
  • Symptoms: Poor call quality (Constant/Intermittent), delay, echo, clipping, one-way path, disconnects, wrong numbers, no service, blocked calls
  • Problems: Transmission errors, packet loss, jitter buffer settings, configuration errors, port settings, QoS mapping errors, hardware failures, service failures, station class of service settings
  • Problem logging, tracking, and follow-up procedures

Registration Fees
The per student registration fee for this seminar is $1,295, and includes the seminar, course materials, and morning and afternoon refreshments. Class begins at 9:00 AM and ends at 5:00 PM each day.

To register, click on the "Book Now" button or please call (708) 246-0320

Seminar Schedule
Dec 4-5 Chicago, IL Holida Inn (Location Information)

* This class is immediately follows:

Data Communication I: Understanding Data and IP Networks Info on this event

Click here to learn about Click here to see the entire seminars calendar, dates & locations

Payment is due prior to the conference.  If payment is not received, a credit card hold will be required for participation.  This card will only be processed if payment has not been received within two weeks following the conference.

Cancellation Policy.  Registrants may cancel up to fourteen days in advance of the seminar start date for a full refund, less administrative fees of $300.  Or, you may transfer your registration to another member of your company at no additional charge.  Registrants cancelling within fourteen days of the seminar will receive credit, less administrative fees of $300, toward any other Resource Center seminar.  In the unlikely event that a seminar must be cancelled, you will be notified at least one week prior to the seminar date. Seminar provider is not responsible for losses due to cancellation including losses on advanced purchase airfares.


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Last modified September 30, 2008