Consult our trainings :
VOIP, Architectures and Processes Training
- Participants / Prerequisite
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.
- Switched Telephone Network.
- Enterprise Telephone Service. Architecture. Assets (PABX, Terminals). Available services. Constraints and limitations.
- The Internet architecture, TCP / IP.
- Enterprise data network. Architecture.
- 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.
- 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.
- 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.
- 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.
- Different steps: needs analysis, data networks audit, comparison of available solutions, solution adaptation to the company, migration...
- Success keys and brakes.
■ Key choice for voip
■ Business scenarios and market solutions
■ The management of a Voip project
- 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.
- 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.