Vo IP Onno W Purbo onnoindo net id
Vo. IP Onno W. Purbo onno@indo. net. id
Arah Perkembangan
Philosophy n The old world n n n Box reliability Centralized The new world n n Network availability Distributed
References n n n n http: //www. cisco. com http: //www. lucent. com http: //www. xl. com http: //www. quicknet. net http: //openh 323. org http: //openphone. org http: //www. pulver. com
Outline n n n End User Perspective Conceptual Framework Next Generation Telco. .
End User - Internet Telephone
Komponen Vo. IP / Menit n n n Telkom Rp. 75 / menit ISP Rp. 75 / menit Hook-off Service n n http: //www. net 2 phone. com Delay <250 ms
Biaya SLI / Menit (1 US$=Rp 8000) Country Peak Normal Disc Vo. IP US 9900 8300 6230 1350 Singapore 6780 5650 4240 2550 Taiwan 9960 8300 6270 4070 Jepang 11286 9400 7050 2310 9960 8300 6230 2710 Hong Kong
Solusi Kantor Kecil / Rumah n n Satu (1) Saluran Vo. IP Internet Phone. JACK Internet Line. JACK Internet Phone. CARD US$150 US$220 US$170
Komunitas WARNET n n Asosiasi-warnet@itb. ac. id Free subscribe: n n Asosiasi-warnet-subscribe@itb. ac. id Komunitas e-commerce n n n Mastel-e-commerce@egroups. com Warta-e-commerce@egroups. com E-commerce@itb. ac. id
Kebutuhan WARNET n n Line telepon koin Leased line analog Regional Network / DIVNET n Akses ke box JAMUS V. 35 / RS. 449
WARNET “tanpa” Telkom WARNET ke Internet n Satellite Direct. PC – US$200 / card n Kabel. Vision – Rp. 300. 000 / bulan Jaringan WARNET n 2 -11 Mbps 2. 4 GHz US$250 / card
Teknologi Vo. IP sederhana
Internet Telephone
Dialer
Video Conference
Internet Phone. JACK
Connection Phone. JACK
Internet Phone. CARD
Voice Quality Comparison
Solusi Gateway Sederhana
Voice. Tronix (8 port)
Vo. IP untuk WARNET n n n Investasi WARNET+ Invest Card DSP ~US$150 / kanal. Estimasi ke US biaya / menit n n US$0. 13 + Rp. 75 Estimasi ke US biaya SLI 001 n Rp. 9900 -8300 / menit
Issue Desktop Vo. IP Solution n n n n Ease of Installation. Infrastructure. Flexibility. Compatibility. Ease-of-Use. Quality. Cost Growth Path. Base for Applications.
Aplikasi Desktop Vo. IP n n n Intra. Net Communication Remote Call Forwarding Distributed Call Center Virtual PBX Line Doubling Personal Iphone Calling
Personal Iphone Calling
Intranet Communications
Remote Call Forwarding
Distributed Call Center
Virtual PBX
Line Doubling
Mobile User
Mobile User n n Internet Locator Service (ILS) Mapping Name Number Dynamic IP
Internet Locator Service (ILS) n http: //www. icq. com n n ILS & chat system http: //www. tzo. com n Dial your DNS name.
Conceptual Framework n H. 323
H. 323 Benefit n n n n n Codec Standards. Interoperability. Network Independence. Platform & Application Independence. Multipoint Support. Bandwidth Management. Multicast Support. Flexibility. Inter-Network Conferencing.
H. 323 mengatur. . n n n 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.
Open Standard
Komponen H. 323 n n Terminal Gateway Gatekeeper Multipoint Control Unit (MCU)
Terminal H. 323 n n n Provide Real-Time. Provide Two-way communications. H. 245 – nego channel usage & capabilities. Q. 931 – Registration/Admission/Status (RAS). T. 120 – Data Conferencing Protocols.
Komponen H. 323 Gateway n n Interface H. 323 terminal – WAN terminal. H. 323 Gatekeeper n n n Address Translation (E. 164 – IP) Admission Control. Authentication. Bandwidth Control. Zone Management. Call Control & Management n (e. g. Vo. IP – PSTN)
H. 323 Gateway n n n 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.
H. 323/PSTN Gateway
Gatekeeper n n 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.
Gatekeeper n n 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.
Gatekeeper Zone
Isu Quality of Service (Qo. S) n n n Kekurangan Bandwidth Delay terlalu lama. Jitter / Variasi delay.
Qo. S n n n Resource Reservation Protocol (RSVP) Real Time Protocol (RTP) Compressed Real Time Protocol (CRTP) n n Traffic Shaping Queuing: Custom Queuing, Weighted Fair Queuing. Congestion Control: Random Early Detection. Effisiensi Jaringan: link fragmentation & interleaving.
Metoda Kompresi G. 711 PCM G. 726 ADPCM G. 728 LD-CELP G. 729 CS-ACELP G. 729 x 2 Encoding G. 729 x 3 Encoding G. 729 a CS-ACELP G. 723. 1 MPMLQ G. 723. 1 ACELP Kbps 64 32 16 8 8 6. 3 5. 3 MIPS 0. 34 14 33 20 20 20 10. 5 16 16 ms 0. 125 0. 625 10 10 30 30 MOS 4. 1 3. 85 3. 61 3. 92 3. 27 2. 68 3. 7 3. 9 3. 65
MOS vs. DSP Price
Intermediate Solution Vo. IP
Interkoneksi Suara-Data-Suara
Interkoneksi PC-Telepon
Gatekeeper n Lucent Packet. Star IP Gatekeeper n n Cisco Call. Manager n n 23. 500 DSO 2. 300. 000 calls / day (one zone) 7. 800. 000 calls / day (multi zone) Windows NT Quicknet n H. 323 Internet Switch. Board
Gateway n Lucent Path. Star n n n Cisco DE-30+ n n 80. 000 POTS 10. 000 x. DSL 30 voice on E 1 Cisco AT-2, 4, 8 n Analog loop RJ-11, 2, 4, 8 POTS.
Next Generation Telco
Split Data & Voice Network
Converged Enterprise Network
Philosophy n The old world n n Box reliability The new world n Network availability
Network Availability
Network Availability n n Redudancy at many levels. Advanced Layer 3 Protocols: n n Hot Standby Routing Protocol (HSRP). Open Shortest Path First (OSPF). Enhanced Interior Gateway Routing Protocol (EIGRP). Multicast Routing: n n Protocol Independent Multicast (PIM). Distance Vector Multicast Routing Protocol (DVMRP).
Campus Network
How? – Detailed. .
End-to-End Architecture
Open Architecture n n n H. 323 Simple Gateway Control Protocol (SGCP) Media Gateway Control Protocol (MGCP) Session Initiation Protocol (SIP) Telephony Application Programmable Interface (TAPI) Java Telephony Application Programmable Interface (JTAPI)
Low Cost of Ownership
Hierarchical WAN Design n n the network must support and supply the prerequisite Qo. S features. Hierarchical model to allow the most costeffective platforms. As the requirements for data traffic outstrip those of voice, voice bandwidth decreases & lowering costs. WAN links to support the minimum requirements for data + voice and video. When other applications are quiescent, the bandwidth is available for data.
WAN Qo. S-Enabling Tech.
Classification n Layer 3 (IP) n n n IP Precedence; Vo. IP 5. Differentiated Services Code Point (DSCP) Layer 2 (MAC) schemes n n n Voice RTP Voice UDP Voice Port 16383 - 32767
Prioritizing n Voice Traffic n n Priority Queuing (PQ) Data Traffic n n weighted fair queuing (WFQ) class-based weighted fair queuing (CBWFQ)
Prioritizing
Link-Efficiency Techniques n n Voice Compression (e. g. G. 723). Compressed RTP n n n 40 byte IP+UDP+RTP 2 -4 bytes. Voice Activity Detection (VAD). Link Fragmentation & Interleaving. n n Frame Relay – FRF. 12 Serial Link – Multilink PPP (MLP).
Traffic Shaping n Multiple access nonbroadcast media such as ATM and Frame Relay where the physical access speed varies between two end points.
Issue Qo. S - Campus Network n n Aggregation points where many links aggregate into an uplink. aggregation points where speed mismatches occur.
Qo. S Campus Network n The primary concern is buffer management and the ability to provide the required queuing schemes to ensure voice gets the appropriate bounds for loss, delay, and jitter.
Qo. S – Strategies n n Classification is a key attribute. Queuing techniques. Buffer management is also used to ensure that excess jitter is not added for voice traffic. To combat this, the multilayer LAN switches provide either two queues or a single queue with definable drop thresholds to bound delay.
Application n IP Telephony Unified Messaging IP Contact Center
Vo. IP
Unified Messaging
IP Contact Center
Migration Strategies
Terima Kasih
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