Who Should Attend?

The course is intended to anyone who needs to broaden knowledge about VoIP.

Course Content

1. Introduction: Why Voice over IP, VoIP history and evolutions, VoIP variants, VoIP standardization, Market trends.
2. VoIP basic blocks: Perceptual voice quality (MOS), Voice quality ITU requirements, Voice Activity Detection (VAD), Echo cancellation, Voice compression algorithms, Voice coding standards (G.72x family, EFR, AMR), Voice transcoding issues, Video compression standards overview, Voice transport options in packet networks, Voice and Telephony over ATM (VToA), UDP versus TCP for multimedia transport, IP multicast communication (conferencing), Real Time Transport Protocol (RTP), Real Time Transport Control, IP QoS issues: RSVP, DiffServ, Session Description Protocol (SDP) PSTN signaling.
3. H.323 based VoIP: H.32x multimedia standards family, H.323 Standards umbrella and evolution, H.323 Terminal architecture, H.245 Signaling, H.225.0 Signaling, H.323 Gatekeeper, H.323 Gateway, H.323 Multipoint Control Unit, Sample H.323 Message Sequence Charts (Call Setup, Teardown, etc.).
4. SIP based VoIP: SIP philosophy, SIP components (user agents, servers), SIP messaging and syntax, SIP Sample Message Sequence Chart, SIP & Instant Messaging.
5. Media Gateway Control Protocols: H.248 MEGACO.
6. SIP & H.323 Interworking.
7. Introduction to Next Generation Network (NGN): NGN motivation, Evolution of SIP and H.323 toward NGN, NGN basic blocks, Softswitch characteristics, NGN gateways description, NGN Service Creation Platforms (Parlay), UMTS NGN Solution – IP Multimedia Subsystem (IMS).
8. VoIP quality issues: Influence of network parameters (delay, jitter, PER) on voice quality (e-model), Influence of network parameters on signaling (call setup, etc).
9. VoIP OAM and deployment: VoIP Management, Security, Firewall traversal.
10. Concluding Remarks: VoIP problems, VoIP research trends.

Course Objectives

This VoIP course consist of all aspects related to the VoIP technology. During the course all components of different VoIP solutions are presented and their functionality explained. The course starts from characteristics of VoIP basic blocks and at the end the most advanced concept of IP telephony, known as Next Generation Network (NGN) for carrier grade services is presented. Common deployment issues are outlined.

Pre-requisites

There are no prerequisites to attend the course, but basic knowledge about IP would be beneficial.

Training Structure

Two days training divided into logical sessions.

Methodology

Instructor led training.