VOIP & Asterisk introduction - Profoss

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AWT www.awt.beVoIP is not theperfect synonym of ToIP•Telephony over IP « ultimate » stage in the migration to ‘all IP’ transport with packet is done end to end Important strep towards the notion of services convergence replaceo traditional telephone by a « IP phone »othe hardware PBX by a Server Software 9 or an IPpbx (running on anOS: Windows, Linux, Unix,…)•Characteristics of ToIP. one replace phone jack (RJ11) with a network plug (RJ45) analog/digital interface by an interface using IP protocol traditional signaling (SS7, ISDN) by voice over IP (H.323, SIP, IAX) (vendor specific) phone headsetooa new phone terminala software (softphone) usable on a PC, PDA, Smartphone,…9 also named SoftSwitch<strong>Profoss</strong> oct. 2007 - 16
ToIP ‘s deployment scalesAWT www.awt.be•Qualified definition Closed Zone (Intranet): private IP telephony server Half-Public Zone (Extranet): private IP telephony server open to partners,suppliers (eg: through VPN)Limited Public Zone (Internet): opening of the IP telephony server to theworld without PSTN or mobile IP ITSPPublic Zone (Internet): opening of the IP telephony server to the world withPSTN and/or mobile IP ITSP•ToIP goes further than Voice over IP Video transmission Fax transmission (T.38) Computer-Telephony-Integration<strong>Profoss</strong> oct. 2007 - 17
Page 9 and 10: Network convergence and adoption of
Page 11 and 12: Why voice over packet ?•Initially
Page 13 and 14: Which is the right moment to give u
Page 15: AWT www.awt.beVoIP is not theperfec
Page 19 and 20: IP Phone variationsAWT www.awt.be
Page 21 and 22: AWT www.awt.beOperation principles
Page 23 and 24: Internet sharing (PAT/NAT) is a pro
Page 25 and 26: Security challenges in IP telephony
Page 27 and 28: What are the protections ?AWT www.a
Page 29 and 30: AWT www.awt.beIP telephony has many
Page 31 and 32: Deployment models«The deployment s
Page 33 and 34: TechnologiesTelco driven: PBX is ki
Page 37 and 38: AWT www.awt.beAsterisk market view
Page 39 and 40: AWT www.awt.be•SIP Component:Tech
Page 41 and 42: AWT www.awt.beIPtel economy in the
Page 43 and 44: AWT www.awt.beConclusionKey advices

VOIP & Asterisk introduction - Profoss

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