The future of real time voice communications transmission is rapidly evolving away from the traditional TDM circuit switched infrastructure towards converged packet based delivery models. In the course students develop a complete understanding of the technologies, standards and advanced applications that are driving the deployment of Voice Over IP equipment and services.
  

        Introduction to Voice Over IP

• Voice Over IP Introduction.
• Trends in Voice & Data Convergence.
• The Public Switched Telephone Network (PSTN)
     » Evolution of Voice Networks.
     » Circuit Vs Packet Networks.
     » Signaling System Number 7 (SS7).
     » Customer expectations.
     » Real Time Vs. Non Real Time networks.
     » Latency, Jitter defined.
•
 The Voice Over IP Business Case
   » Innovative Services.
   » New applications.
   » ROI.
•
 Emerging Next Generation Carriers
   » Incumbent carriers .
   » Next Generation carriers .
   » Internet telephony service providers.
•
 Introduction to Voice Over IP in the Enterprise
•
 Voice Over other Packet technologies
   » Voice over Frame Relay.
   » Voice over ATM.
•
 Emerging Voice transports
   » VoDSL .
   » Voice over cable modem.
•
 Networking Protocols
•
 Introduction to TCP/IP
   » IP Addressing .
   » TCP/UDP overview .
   » DNS & DHCP operation in modern networks .
•
 Routing in IP Networks
     » Overview .
     » Routing protocols .
     » Sample LAN & WAN topologies .
• Call Control in IP Networks
     » H.323: Standards for Multimedia Communication over IP Networks .
     » Call Setup Using H.245 and H.225 .
     » Media Gateway Control (MEGACO) .
     » Session Initiation Protocol (SIP) .
     » SIP Addressing and Session Control .
     » Comparisons on H.323, SIP, and MEGACO.
• QOS related networking protocols
     » Resource Reservation Protocol (RSVP).
     » Differentiated Services (DiffServ) .
     » Multiprotocol Label Switching .
     » Real-Time Transport Protocol (RTP) .
     » RTP Control Protocol (RTCP) .
•
 Examples of Real World LAN/WAN topologies with Voice Over IP services.
•
 Voice Encoding Standards .
•
 Overview of encoding standards used for Voice Over.
•
 G.711 Pulse Code Modulation (PCM).
•
 Linear Predictive Coders (LPCs).
•
 Code-Excited Linear Predictive (CELP) Coders.
•
 G.723.1 and G.729.
•
 VoIP issues .
•
 Jitter and Delay in Voice over IP.
•
 Echo Cancellation.
•
 Packet Size .
• Gateway for Voice-to-IP and IP-to-voice conversions.
• Real World Implementation Examples.
• Carrier implementations of VoIP.
• Enterprise implementations.
• Vendor offerings: Overview of Cisco’s AVVID architecture & equipment .
• VoIP in the Enterprise Call Center.
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