Why this VoIP course?
This Fast-Track VoIP Overview seminar provides an introduction to many of the concepts, the standards and terminology used in Voice over IP systems.
- Get a Fast-Track overview of VoIP systems and technologies.
- Understand the roles of SIP, H.323 and H.248/Megaco.
- Understand voice coding, media coding and call signalling.
- See VoIP systems in action – live in the classroom.
- Understand IP Quality of Service issues when running a VoIP system.
VoIP Training Course Objectives
On completing this course, you will be able to:
- On completing this VoIP course, attendees will also meet the pre-requisites for attending course 329: SIP Fundamentals.
Who should attend this VoIP course
- Both Technical and Semi-Technical IT/Networking professionals wanting to understand the essential concepts begind Voice oevr IP (VoIP).
This course also provides the pre-requisite VoIP training for people wanting to understand VoIP using SIP (Session Initiation Protocol).
VoIP Course Pre-requisites
Delegates should have a good understanding of the TCP/IP protocol suite and IP addressing prior to attending this course
Lifetime Post-Course Support
After completing this VoIP training course, delegates receive lifetime post-training support from LEVER Technology Group, to help them apply the technologies and skills they have learned with us, to provide career-long support, and to ensure they are better equipped for their future roles in IT and networking.
VoIP Training Course Content
Overview of VoIP
- Voice and data convergence
- Components of a VoIP system
- Standards employed in current VoIP solutions
- The role of Voice Processing
- The speech encoding process
- Sampling, Quantisation, Coding, Framing
- Silence suppression
- Voice coding and compression standards
- Adaptive encoding techniques
- Coding fax signals
- Voice codecs: G.711, G.722, G.721, G.723, G.726, G.723
- Assessing voice quality
- Mean Opinion Scores (MOS)
- Detecting flaws in transmitted voice
- Employing MOS ratings for codecs and real networks
- Assessing Voice Quality
- Measurable components
- What to test and measure
- P.800 / P.861 recommendations
- PESQ
Operating Voice over IP
- The issues when operating Voice over IP
- Delay, Talker overlap, Echo
- Jitter, Packet loss
- Out of Order Delivery
- The role of Voice Processing and DSP
- Real-time Transport Protocol (RTP)
- The role of RTP
- RTP header in detail
- RTP payload types
- Real-time Transport Control Protocol (RTCP)
- Conclusions
Introduction to Voice over IP signalling
- Overview of signalling in PSTN networks
- Overview of private network signalling
- The major architectures and standards for Voice over IP
- ITU H.323
- IETF SIP
- MGCP and Megaco/H.248
- Cisco SCCP (Skinny)
- VOIP in the enterprise
- VOIP in PSTN Emulation Service (PES)
ITU / IETF Megaco / H.248
- MGCP and Megaco
- The Media Gateway Reference Architecture
- End-to-End call setup
- IETF Megaco
- Megaco Terminations and Contexts
- Megaco Commands
- Megaco Packages
- Megaco IP phone Media Gateway
Overview of IP QoS
- Classifying IP traffic
- Review of the IPv4 Datagram format
- IPv4 Service (TOS) field
- Precedence bits
- DTR(C) bits
- Characteristics of RTP media flows
- Classifying packets in IPv6 networks
- The need for QoS
- IP Differentiated Services (Diff-Serv)
- Queuing and Scheduling mechanisms
- First-In First-Out (FIFO), Strict priority scheduling, Fair Queuing, Weighted-Fair Queuing (WFQ), Class-Based Queuing, Hierarchical Class Based Queuing (CBQ)
- Coping with packet loss
- Controlling admission
- Employing Random Early Detection
- Employing traffic shaping
- IEEE 802.1p/Q
- Operating IP over ATM networks
- Overview of MPLS