designing VoIP networks

VoIP installations have taken off to a rocky start. Many installations have not considered the LAN and WAN traffic of the existing network; consequently, VoIP applications have been viewed as second rate. The first part of the course covers VoIP protocols, networking issues, and benchmark criteria. The course then details guidelines for implementing a VoIP network. The course concludes with VoIP network design scenarios, each followed by a list of problems and solutions.

The key topics explored include:

• VoIP protocols
• QoS mechanisms
• Voice encoding schemes
• Design checklist

Topics covered in the 1 day course:

Introduction to Terminology and Technology

• VoIP stacks and architectures
  1. VoIP standards
  2. H.323
  3. SIP
  4. Megaco
  5. Comparisons and recommendations
• Queuing Mechanisms
  1. Edge queuing systems
  2. WAN queuing services
  3. Limitations
• QoS Mechanisms
  1. Diffserv
• Quality impairments
  1. Latency
  2. Loss
  3. Jitter
• Voice encoding schemes
  1. Wave coders
  2. LPC coders
  3. Bandwidth and MOS
• VoIP Benchmarks
  1. End-to-end latency
  2. End-to-end loss

Design Checklist

• The audit
• The equipment
• WAN technologies
• Survivability
• Security
• MOS and reality

The Local Area Network

• Case presentation and discussion
  1. Case
  2. Equipment placement options
  3. Protocol options
• Segmentation
  1. DHCP
  2. VLANs
  3. 802.1p
• Bridges, switches, and routers
  1. Concerns
  2. Throughput
• Speeds and feeds
  1. 10BASE systems
  2. Fast Ethernet systems
  3. Gigabit systems

Enterprise Networks

• Case presentation and discussion
  1. Case
  2. Equipment issues
  3. Firewalls
  4. NAT
  5. Interoperability with the Internet
• WAN technologies and services
  1. Frame relay
  2. ATM
  3. MPLS
  4. PPP
• Security and reliability

Carrier Networks

• Case presentation and discussion
  1. Case
  2. IP centrex implementations
  3. Softswitches
  4. Quality issues
  5. Survivability
• The last mile options
  1. DSL
  2. Cable modems
  3. WAN

pdf version

For further information call us on +61 3 8611 9800 or request information here. To request a booking on a course, click here.