VOIP & IP tel

• Networking recapitulation (separate frontal lecture on customer site)
  • Ethernet frame format
  • IP Architecture
  • Address scheme
  • Configuration
  • Utilities
  • Protocol format
  • ARP
  • ICMP
  • DHCP
  • DNS
  • TCP
  • UDP
  • Wireshark

• VoIP Introduction
  • Introduction to telephony
  • PSTN architecture and functionality
  • Analog Line
  • E1 & PRI
  • SS#7
• Codecs
  • Analog to digital voice
  • PCM G.711
  • Quality of voice, MOS
  • Compression G.723, G.726, G.729, etc.
• IP telephony
  • Traditional telephony
  • Moving towards IP
    • Hardware saving – comparing tdm network with packet network
    • Traffic management and trunk forecasting
    • Circuit vs packet switched networks
  • Services and key terms (ip pbx/ pure IP, hybrid, enabled, centrex , softphone and more)
  • Architecture
    • Terminals
    • Gateways
    • Call Control Servers
    • Application Servers
    • Media Servers
    • Management devices
    • Work process highlights
• Media transport
  • RTP
  • RTCP
  • cRTP
  • Hands on:
    • Wireshark practice with TCP/IP, DHCP, ARP, DNS, HTTP, etc.
    • Capture, analysis and playing of RTP session live traffic
• SIP
  • SIP properties
  • Functional components
  • SIP message format
  • SIP requests
  • SIP responses
  • PSTN Cause Code and SIP Event Mappings
  • SIP transactions
  • SIP procedures
  • Address resolution
  • SDP
  • SIP extensions and enhancements
  • Call flows
  • Interworking
  • SIP design framework
  • Hands on:
    • Wireshark practice with SIP, SDP and correlation with RTP/RTCP live traffic

• H.323
• H.323 – overview (voice / video / data over ip)

• H.323 – what does it do?
• What is h.323?
• Key benefits
• H.323 component descriptions
  • H.323 components and building blocks
  • Endpoints, terminals
  • Gatekeeper properties and gateway properties
  • Mcu , mc , mp characteristics
  • H.323 zone
• H.323 protocol descriptions
• Call signaling models
• Hands on:
• Wireshark practice with H.323 captures
• Industry perspective
• WebRTC
• Hands on:
  • Wireshark trace of WebRTC live traffic

• SIGTRAN and SIP-T
  • SS#7
  • VoIP and SS#7
  • SCTP
  • SIGTRAN
  • SIP-T
  • Hands on:
    • Wireshark practive with SCTP, SIGTRAN and SIP-T captures
• Gateways
  • Motivations
  • History
  • Architecture
  • Gateway Control Protocol Features
  • MGCP
    • Architecture
    • Connection Model
    • Commands
    • Protocol Issues
    • Packages
    • Example of Message Flows
    • Hands on:
    • Wireshark practice with MGCP captures

• • H.248/Megaco
    • Architecture
    • Connection Model
    • Commands
    • Protocol Issues
    • Packages
    • Example of Message Flows
    • Hands on:

Wireshark practice with MEGACO captures

• • • Industry Perspective
• QoS
  • What is QoS?
  • QoS over IP:
    • Static / predictive
    • Intserv / RSVP / MPLS / ATM
    • Diffserv
    • Hands on:
    • Wireshark practice with DHCP captures

• • QoS for VoIP
  • H.323
  • SIP

• Network management and billing
• Security
  • Security model
  • Threats
    • Telephony
    • IPTel
    • Application

• • Security strategies
  • IP Network
    • FW
    • NAT traversal (STUN, TURN, ICE)

• • Application
    • SBC

• • AAA – Authentication, Authorization, Accounting
  • LI – Lawful interception
  • Best practices

• Presence
  • Hands on:
    • Wireshark practice with presence live traffic
• SIP-IM
  • Hands on:
    • Wireshark practice with SIP-IM live traffic
• Asterisk
• Trends
  • NGN
  • FMC
  • 3GPP
  • IMS