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VOIP, Architectures and Processes Training

Duration : 2 days
Ref : VIP
Price  2021 : Contact us
  • Program
  • Participants / Prerequisite
  • Intra/Tailored

This seminar presents the major components of voice over IP networks. It reviews the main protocols, standardization, voice quality and bandwidth, migration, performance and security of voip technologies. The main solutions will be studied and illustrated with case studies.


Networks and telecommunications review

  • Switched Telephone Network.
  • Enterprise Telephone Service. Architecture. Assets (PABX, Terminals). Available services. Constraints and limitations.
  • The Internet architecture, TCP / IP.
  • Enterprise data network. Architecture.

Voice over IP

  • Definition and concepts. The vocabulary of voip.
  • Enterprise networks and their evolutions: Voice / Data separation, single network convergence. Why migrate to voip?
  • How to integrate voip to enterprise information system?
  • How to interoperate with traditional telephone networks?
  • The user functionalities offered by voip.
  • The market and its players.

Protocols essential (H323, SIP...)

  • Roles and interests of each of the protocols.
  • H323 Presentation and architecture. Principles and definitions. H323 components roles: gatekeeper, MCU, gateway... The steps of a H323 communication: RAS, H225, H245... Examples of enterprise architecture.
  • SIP Presentation and architecture. Principles and definitions. SIP components roles: proxy, registrar, redirector, locator... The steps of a SIP communication: registration, localisation, call, roaming... Examples of enterprise architecture.
  • Other VoIP protocols. MGCP, MEGACO, H248... IAX protocol, from Asterisk Open Source.

Migrating to Voice over IP

    ■ Key choice for voip

    • Cost: profit (communications, maintenance), loss (equipment, skills), etc.
    • New services: improving the productivity of employees (VisioConf, Mobility... etc.).
    • Scalability of the network and its applications.
    • The image of the company.

    ■ Business scenarios and market solutions

    • Several solutions for various enterprises.
    • PABX-PABX interconnection.
    • Migration to IP PABX: examples of manufacturers solutions, advantages and constraints.
    • IP Centrex solution: examples of operators solutions, advantages and constraints. Peer-to-peer solutions: Skype and Wengo models.
    • Satisfaction and maturity of the solutions.

    ■ The management of a Voip project

    • Different steps: needs analysis, data networks audit, comparison of available solutions, solution adaptation to the company, migration...
    • Success keys and brakes.

Integration and administration

  • Manufacturers administration tools.
  • Measures of QoS.
  • Integration with users databases : LDAP, SSO.
  • Use and update of network equipment : DHCP, TFTP, DNS...
  • The mobile phone terminals (VoIP over WiFi, DECT, dual-mode terminal...).
  • Links: xDSL, Ethernet, radio links, sizing.

Performance and quality of service of Voip networks

  • Why data networks do not give reliability required by the transport of voice?
  • The reliability reference: the PSTN.
  • Strengths and weaknesses of data networks in terms of quality of service. Definition and concepts of the QoS Quality of Service. Delay, jitter, packet loss ... impacts of the IP network QoS on Voip.
  • To compensate the unreliability of IP networks, use of specific protocols: RTP and RTCP.
  • Summary of flows in Voip. Signalling ( call setup). Media (voice, video...).
  • How to bring the performance to IP networks. Strengthen bandwidth. QoS management tools for IP networks (802.1P/Q, RSVP, DiffServ, MPLS...). VoIP quality referential: E-model, PESQ, PAMS, PSQM.


  • The emerging issues related to the migration to Voip solutions. What should we protect, who, why can we be attacked?
  • The known threats. Confidentiality: protecting the media flow and the signalling exchanges. Integrity: control and prevent changes in data transmitted over the network. The availability and denial of service.
  • Identity spoofing. Fraud. The spam. The regulation: the legal obligations of security and brakes for technological development.
  • The issue of emergency services.

The future

  • Operators evolution: fixed / mobile convergence and abandonment of PSTN model for VoIP.
  • The convergence of technologies: WiMax, MPLS...
  • The new services and multimedia uses.
  • IMS, IP Multimedia Subsystem, tomorrow, the multimedia network.
Participants / Prerequisite

» Participants

Project managers, networks architects, systems and networks engineers.

» Prerequisite

Knowledge in networks.

Contact Informations

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Time schedule

Generally, courses take place from 9:00 to 12:30 and from 14:00 to 17:30.
However, on the first day attendees are welcomed from 8:45, and there is a presentation of the session between 9:15 and 9:30.
The course itself begins at 9:30. For the 4- or 5-day hands-on courses, the sessions finish at 15:30 on the last day
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