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Workforce Development Programs |
Voice Over the Internet Protocol (VoIP): A Technical Overview
Registration
October 26 & 27, 2006
9:00 a.m. to 4:00 p.m.
 View a printable registration form
Description
This class provides a solid overview of technology used in delivering voice over the Internet
Protocol (VOIP), including the devices, gateways, protocols and standards that make such calls
possible. Protocol traces that reveal call set-up, control, delivery and termination will be
studied. Troubleshooting scenarios will be described. Students will be involved in labs with a
VOIP system and use test equipment and sniffing devices to investigate problems in the network
configuration. Various vendor implementations will be compared.
Who can benefit from this class?
Any technician, analyst, manager, or engineer needing a technical overview of VOIP can benefit. This would include anyone contemplating the deployment of VOIP or deciding if VOIP is a good fit for their organization.
Prerequisites to Course
Individuals should have a general knowledge of LANs, IP, and network technology.
Topics
- Background
- The IP, TCP and UDP protocols
- Voice conversion and compression
- Why packet technology for voice and video
- Feasibility of packet voice
- Software PBX’s
- G7xx: Voice Compression
- Signaling Protocols
- H.323: the umbrella
- Architecture
- Gateways
- Gatekeepers
- Media Gateway Controllers
- Multipoint Control Units
- Q.931, H.225: call set-up
- H.245: call control
- SIP: Session Initiation Protocol
- HTTP background
- Overview
- Messages
- Operations
- MGCP
- Skinny Protocol
- Relationship to Call Manager
- Sample scenarios
- Transport Protocols
- RTP: Real Time Protocol
- Headers
- Sources
- Handling silence
- RTCP: Real Time Control Protocol
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- Quality of Service
- Issues
- Implementations
- Jitter
- Delay
- Measuring Voice Quality
- Network Assessment
- Current vendor requirements
- How to conduct the assessment
- The role of the consultant
- Vendor tools available
- Vendor Implementations
- Cisco
- Architecture and design
- Call Manager control and database
- Endpoints and trunks
- Role of Catalyst switches
- Avaya
- Architecture and design
- Interface to TDM and PSTN
- Call control
Labs (selected from):
- Packet header analysis
- Capturing voice packets
- Determining the compression algorithm being used.
- RTP analysis
- RTCP analysis
- Measuring voice quality
- Phone boot sequence
- Phone access to network
- Voice and network loading
- Analysis of jitter and delay
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