VOIP Technologies

Course details

This Instructor led course is designed for design and support specialists with a working knowledge of voice and data who need the fundamentals of Voice over IP technologies.

Recommended as preparation for exam(s): 920-803 Technology Standards and Protocols for IP Telephony Solutions certification exam.

IS IT RIGHT FOR ME?

This course is aimed at: Technicians and Engineers.

All delegates should have a working knowledge of: Voice Telecommunications and Internet Protocol (IP) Fundamentals.

What will I learn?

At the end of the course, delegates will be able to:

• Define the key infrastructure considerations to support the addition of VoIP traffic in a Local Area Network, Wide Area Network, and Wireless environments.
• Apply knowledge of how voice is sampled and converted into IP packets to determine the appropriate CODEC and packetization interval required to meet customer VoIP bandwidth requirements.
• Compare and contrast transport models, such as Voice over IP, Voice over Frame Relay, and Voice over AT.
• Describe standard voice quality measurement models, such as the Mean Opinion Score and the E-Model.
• Apply knowledge of the attributes of Real-Time Protocol to identify why it is ideal for handling packetized voice in an IP telephony environment.
• Compare the unique attributes of User Datagram Protocol and Transmission Control Protocol.
• Choose the appropriate CODEC given customer bandwidth and voice quality performance requirements.
• Determine bandwidth requirements based upon call volume and CODEC selection.
• Choose the appropriate method to implement Quality of Service given customer voice quality requirements.

What will it cover?

Major Components of the VoIP Network

• VoIP Network
• Local Area Network Infrastructure
• Wide Area Network Infrastructure
• Security Issues
• Wireless

Voice Packetization

• Analog to Digital Conversion
• Pulse Code Modulation
• CODECs
• Packet Switching
• Voice Packet

Transport and Session Layer Technologies

• Transmission Models
• Transport and Session Layer Internet Protocols

Voice Quality

• CODEC Selection
• Common Models for Voice Quality

Bandwidth

• Bandwidth Overview
• Calculating bandwidth without Layer 2
• Layer 2 Data Link Overhead
• Calculating bandwidth with Layer 2
• Calculating Effective bandwidth with Voice Activity Detection

Quality of Service

• Methods to Achieve Quality of Service
• Ethernet 802 Standards
• Queuing Mechanisms
• A layered approach

Traffic Convergence Issues

• Low Speed WAN Connection Issues
• Common Ethernet Network Issues for LAN Environment
• Describing WLAN Security Standards

VoIP Standardization and Signalling Protocols

• H.323 Overview
• Session Initiation Protocol (SIP)
• Comparing H.323 and SIP
• Interworking H.323 and SIP
• Other Signalling Protocols
• MEGACO/H.248

Network Assessment

• Readiness Audit
• Network Diagram
• Link Types and Speeds
• Hardware
• Power and Wiring
• Quality of Service
• Packet Loss and delay
• Protocol Considerations Course Prerequisites