1. VoIP Onno W. Purbo onno@indo.net.id

2. Arah Perkembangan

3. Philosophy • The old world • Box reliability • Centralized • The new world • Network availability • Distributed

4. References • http://www.cisco.com • http://www.lucent.com • http://www.xl.com • http://www.quicknet.net • http://openh323.org • http://openphone.org • http://www.pulver.com

5. Outline • End User Perspective • Conceptual Framework • Next Generation Telco ..

6. End User - Internet Telephone

7. Komponen VoIP / Menit • Telkom Rp. 75 / menit • ISP Rp. 75 / menit • Hook-off Service • http://www.net2phone.com • Delay <250ms

8. Biaya SLI / Menit (1US$=Rp8000)

9. Solusi Kantor Kecil / Rumah • Satu (1) Saluran VoIP • Internet PhoneJACK US$150 • Internet LineJACK US$220 • Internet PhoneCARD US$170

10. Komunitas WARNET • Asosiasi-warnet@itb.ac.id • Free subscribe: • Asosiasi-warnet-subscribe@itb.ac.id • Komunitas e-commerce • Mastel-e-commerce@egroups.com • Warta-e-commerce@egroups.com • E-commerce@itb.ac.id

11. Kebutuhan WARNET • Line telepon koin • Leased line analog Regional Network / DIVNET • Akses ke box JAMUS V.35 / RS.449

12. WARNET “tanpa” Telkom WARNET ke Internet • Satellite DirectPC – US$200 / card • KabelVision – Rp. 300.000 / bulan Jaringan WARNET • 2-11 Mbps 2.4 GHz US$250 / card

13. Teknologi VoIP sederhana

14. Internet Telephone

15. Dialer

16. Video Conference

17. Internet PhoneJACK

18. Connection PhoneJACK

19. Internet PhoneCARD

20. Voice Quality Comparison

21. Solusi Gateway Sederhana

22. VoiceTronix (8 port)

23. VoIP untuk WARNET • Investasi WARNET+ • Invest Card DSP ~US$150 / kanal. • Estimasi ke US biaya / menit • US$0.13 + Rp. 75 + Rp. 75 • Estimasi ke US biaya SLI 001 • Rp. 9900-8300 / menit

24. Issue Desktop VoIP Solution • Ease of Installation. • Infrastructure. • Flexibility. • Compatibility. • Ease-of-Use. • Quality. • Cost • Growth Path. • Base for Applications.

25. Aplikasi Desktop VoIP • IntraNet Communication • Remote Call Forwarding • Distributed Call Center • Virtual PBX • Line Doubling • Personal Iphone Calling

26. Personal Iphone Calling

27. Intranet Communications

28. Remote Call Forwarding

29. Distributed Call Center

30. Virtual PBX

31. Line Doubling

32. Mobile User

33. Mobile User • Internet Locator Service (ILS) • Mapping Name Number  Dynamic IP

34. Internet Locator Service (ILS) • http://www.icq.com • ILS & chat system • http://www.tzo.com • Dial your DNS name.

35. Conceptual Framework • H.323

36. H.323 Benefit • Codec Standards. • Interoperability. • Network Independence. • Platform & Application Independence. • Multipoint Support. • Bandwidth Management. • Multicast Support. • Flexibility. • Inter-Network Conferencing.

37. H.323 mengatur .. • Video Codec (H.261 dll). • Audio Codec (G.711, G.723 dll). • Data channel (T.120 dll) e-board dll. • System Ctrl Unit (H.245, H.225.0 dll). • H.225.0 layer – error detection, error correction and frame sequencing.

38. Open Standard

40. Komponen H.323 • Terminal • Gateway • Gatekeeper • Multipoint Control Unit (MCU)

41. Terminal H.323 • Provide Real-Time. • Provide Two-way communications. • H.245 – nego channel usage & capabilities. • Q.931 – Registration/Admission/Status (RAS). • T.120 – Data Conferencing Protocols.

43. Komponen H.323 • H.323 Gateway • Interface H.323 terminal – WAN terminal. • H.323 Gatekeeper • Address Translation (E.164 – IP) • Admission Control. Authentication. • Bandwidth Control. • Zone Management. • Call Control & Management • (e.g. VoIP – PSTN)

44. H.323 Gateway • Optional! • Translation function between H.323 conferencing endpoints and other terminal types. • Translation between transmission formats (i.e. H.225.0 to H.221). • Translation between communications procedures (i.e. H.245 to H.242). • Translation between audio and video codecs. • Performs call setup and clearing on both the LAN side and the PSTN side.

45. H.323/PSTN Gateway

46. Gatekeeper • The most important component asct as a virtual switch of an H.323 enabled network. • It acts as the central point for all calls within its zone and provides call control services to registered endpoints.

47. Gatekeeper • Address translation from LAN aliases for terminals and gateways to IP or IPX addresses (e.g E.164 – IP) • Bandwidth management. • Route H.323 calls. • Bill for calls.

48. Gatekeeper Zone

49. Isu Quality of Service (QoS) • Kekurangan Bandwidth • Delay terlalu lama. • Jitter / Variasi delay.

50. QoS • Resource Reservation Protocol (RSVP) • Real Time Protocol (RTP) • Compressed Real Time Protocol (CRTP) • Traffic Shaping • Queuing: Custom Queuing, Weighted Fair Queuing. • Congestion Control: Random Early Detection. • Effisiensi Jaringan: link fragmentation & interleaving.