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

2. VoIP di COMDEX 2000

3. VoIP di COMDEX 2000 Lokasi Las Vegas, US Calling Card US$10
Waktu bicara US-Jakarta 90 menit
Artinya .. Rp / menit (US-Jakarta)

4. Gambaran Umum Internet

6. Model Usaha VoIP

7. Kerja Sederhana Telepon

11. Kerja sederhana VoIP

14. Konversi ke
Paket Data

22. Penghematan Saluran ..

24. Dalam Bahasa Sederhana ..

25. Telp Biasa vs. VoIP
Hanya satu penumpang
Banyak Penumpang

26. Teknologi VoIP sederhana

27. Internet Telephone

28. Dialer

29. Video Conference

30. Internet PhoneJACK

31. Connection PhoneJACK

32. Voice Quality Comparison

33. Solusi Gateway Sederhana

34. VoiceTronix (8 port)

35. VoIP Profesional

36. Gatekeeper Lucent PacketStar IP Gatekeeper Cisco CallManager Quicknet
DSO
calls / day (one zone)
calls / day (multi zone)
Cisco CallManager
Windows NT
Quicknet
H.323 Internet SwitchBoard

37. Gateway Lucent PathStar Cisco DE-30+ Cisco AT-2, 4, 8 80.000 POTS
xDSL
Cisco DE-30+
30 voice on E1
Cisco AT-2, 4, 8
Analog loop RJ-11, 2, 4, 8 POTS.

38. Conceptual Framework
H.323

39. Open Standard

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

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

42. 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.

43. Metoda Kompresi Kompresi Kbps MIPS ms MOS 64 0.34 0.125 4.1 32 14 3.85
G.711PCM 64
0.34
0.125
4.1
G.726 ADPCM 32 14
3.85
G.728 LD-CELP 16 33
0.625
3.61
G.729 CS-ACELP 8 20 10
3.92
G.729 x2 Encoding
3.27
G.729 x3 Encoding
2.68
G.729a CS-ACELP
10.5
3.7
G MPMLQ
6.3 30
3.9
G ACELP
5.3
3.65

44. WAN QoS-Enabling Tech.

45. Classification Layer 3 (IP) Layer 2 (MAC) schemes
IP Precedence; VoIP  5.
Differentiated Services Code Point (DSCP)
Layer 2 (MAC) schemes
Voice  RTP
Voice  UDP
Voice  Port

46. Prioritizing Voice Traffic Data Traffic Priority Queuing (PQ)
weighted fair queuing (WFQ)
class-based weighted fair queuing (CBWFQ)

47. Prioritizing

48. Link-Efficiency Techniques
Voice Compression (e.g. G.723).
Compressed RTP
40 byte IP+UDP+RTP  2-4 bytes.
Voice Activity Detection (VAD).
Link Fragmentation & Interleaving.
Frame Relay – FRF.12
Serial Link – Multilink PPP (MLP).

49. Terima Kasih