| Overview
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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.
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Introduction to Voice Over IP
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- 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
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Networking Protocols
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- 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
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Voice Encoding Standards
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- 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
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VoIP issues
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- Jitter and Delay in Voice over IP
- Echo Cancellation
- Packet Size
- Gateway for Voice-to-IP and IP-to-voice conversions
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Real World Implementation Examples
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- 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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