Course Ref : GEN5013
Course Price : £1250
Course Duration : 3 days
Overview
To introduce an overview of the concepts, vocabulary and terminology associated with Voice
over IP (VoIP).
Audience
The course is open to anyone with networking experience within the traditional LAN/WAN environment who requires an overview of problems and solution inherent in the implementation of voice technology in these environments.
Pre-requisites
Some knowledge of IP and general routing practices is required.
Objectives
At the end of the course delegates will understand the issues and techniques relating to the digitisation of voice as well as the Quality of Service (QoS) issues specific to voice communications and how they
differ from the traditional data environment. Technology protocols such as H.323, SIP, MGCP,
- Characteristics of Voice
- Circuit Switched Networks
- Voice over the PSTN - Pros & Cons
- Characteristics of Data
- Packet Switched Networks
- The Internet Protocol Suite (TCP/IP)
- IP Protocol
- Transport Protocols
- Transport Control Protocol (TCP)
- User Datagram Protocol (UDP)
- Stream Control Transmission Protocol (SCTP)
- Voice over Data Networks - Pros & Cons
- Computer Telephony Integration
- Standards Organisations
- Analogue Telephony
- Pulse Code Modulation (PCM)
- Modern Encoding Techniques
- Mean Opinion Score
- Standard Codec's
- Video Encoding Techniques
- Practical (compare & contrast Voice encoding techniques)
- Practical (analyse the effect of packet loss with different codecs)
- Translators and Mixers
- RTP Packet
- Payload Formats
- RTP Security
- RFC 2833 RTP payload for DTMF signals and Named Telephone Events
- Real Time Control Protocol
- IP, UDP and RTP have Overheads
- How much is wasted?
- Silence Suppression
- Content of a Conversation
- Header Compression
- Loading a Network
- VoIP Bandwidth Calculator
- Power Over Ethernet
- Practical (configuring an analogue voice call within single VoIP gateway router)
- Packet Considerations
- Fixed Delay Components
- Variable Delay Components
- Delay
- Lost Packet Solutions
- Packet Delay Solutions
- Legacy Routing
- QoS Aware Routing
- IP QoS Techniques
- Type of Service Routing
- Internet Integrated Service
- Resource Reservation Protocol (RSVP)
- Policing & Reshaping
- Differentiated Services
- Traffic Conditioners
- DS Byte
- Multi-Protocol Label Switching Operation
- Practical (configure the network with and without QoS - compare & contrast)
- What is Session Initiation Protocol (SIP)
- SIP Components
- SIP Messages
- SIP Requests & Response Codes
- SIP Architecture
- Servers in SIP
- SIP Proxy Server Example
- SIP Redirect Server Example
- Registration
- Session Description Protocol
- SIP and Call Services
- Supporting Quality of Service
- SIP Security Features
- Removing Silence with RTP
- Benefits of SIP
- Practical (configure a Softphone to run SIP and make SIP calls)
- Practical (analyse SIP traffic flows)
- MGCP, Megaco, and GCP
- MGCP Stack
- Endpoints and Connections
- Endpoint Description
- MGCP Commands
- Call Set Up Using MGCP
- GCP/H.248.1 and MGCP
- Terminations and Context
- GCP/H.248.1 Commands
- Call set up
- GCP/H.248.1, MGCP and SIP
- SIGTRAN
- Practical (analysing MGCP & MegaCo traffic flows)
- Desktop
- IP Multimedia Improves Collaboration
- Additional Services
- Examples of VoIP Services: Vonage
- Examples of VoIP Services: Skype
- PC to PC or PSTN - VoIPtalk
- NGN Networks
- What is BT’s 21CN?
- 21CN Milestones
- IMS and NGN
- Conclusion
Follow-on Courses
N/A