1 NISDN (Narrow Band ISDN) ISDN = Integrated Services Digital Network Sentral Digital, Transmisi...

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1 NISDN (Narrow Band ISDN) ISDN = Integrated Services Digital Network Sentral Digital, Transmisi Digital, akses masih analog NISDN: Digitalisasi akses menjadi 64 kbps Slide 2 2 Broadband services Broadband services didefinisikan sebagai layanan telekomunikasi yang membutuhkan kanal transmisi lebih besar dari 2 Mbps (E1) Atau: Jaringan digital yang dapat melayani apa saja: jasa data kecepatan tinggi, videophone, videoconference, transmisi grafis resolusi tinggi, CATV, termasuk juga jasa sebelumnya seperti telepon, data, telemetri dan faksimile Narrowband Services Narrowband services didefinisikan sebagai layanan telekomunikasi yang membutuhkan kanal transmisi yang relatif senpit bandwidthnya atau lebih kecil dar 2 MB/s. Bandwidth Bandwidth didefinisikan sebagai kemampuan kanal yang dapat melalukan data dengan kecepatan tertentu.Dalam sirkit dijital besarannya diukur dalam Bit Per Second (Bp/s) yang biasa disebut denga kecepatan transmisi. Untuk sistem analog diukur dengan Hertz (Cycle per second) Slide 3 3 Bandwidth for different services 10 KB/s 100 KB/s1 MB/s10 MB/s100 MB/s Voice Video Data Telephony Braodcast Videoconference TV and HDTV Video Inter-LAN / PBX communication FAX CAD Graphic Slide 4 4 Practical Limit on 24-Gauge TW Pair DesignationBandwidth Limit (one way) Distance Limitation DS 1/TI E1 DS 2 E2 STS-1 STS-1 STS-1 1.544 MBps 2.048 MBps 6.312 MBps 8.448 MBps 12.960 MBps 25.920 MBps 51.840 MBps 18.000 feet 16.000 feet 12.000 feet 9.000 feet 4.500 feet 3.000 feet 1.000 feet Slide 5 5 Integrated Services Digital Network (ISDN) NT ISDN IU NT ISDN IU 144 Kbit/s 2B + D Twisted Copper Pair Access Network 144 Kbit/s 2B + D Twisted Copper Pair Access Network C P E 2 Mb/s 64 Kb/s Digital Switch 64 Kb/s Digital Switch 64 Kb/s ISDN TLP Slide 6 6 ISDN digunakan karena pada switching digital umumnya terjadi pergerakan signal 64 Kb/s dari satu lintasan signal 2Mb/s ke lintasan lain, selain dari pada itu content yang terdapat pada 64 Kb/s dapat berupa speech, data atau video. Dengan sistem ISDN memungkinkan Customer melalui kabel tembaga mengirim berbagai signal pada jaringan switching telephone pada rate 64 Kb/s. Jadi dengan cara itu ISDN dapat memberikan pertukaran informasi dari Customer Premises yang satu kepada Customer Premises lainnya dengan sistem switching 64 Kb/s. Slide 7 7 Terdapat 2 jenis access layanan ISDN 1.Basic Rate Interface (BRI) atau Basic Rate Access (BRA) dikenal dengan 2B+D Sistem ini terdiri dari 2 bearer 64 Kb/s untuk transmisi informasi dan 1 kanal signaling 16 Kb/s, digunakan unutk hubungan yang sederhana. 2. Primary Rate Interface (PRI) atau Primary Rate Access (PRA) dikenal dengan 30B+D yaitu terdiri dari 30 bearer channels pada rate 64 Kb/s dan 1 signalling cahnnel 16 Kb/s, umumnya digunakan untuk sistem yang lebih kompleks misalnya beberapa PABX dan hubungan komputer dengan kapasitas besar. Slide 8 8 LE NT ISDN TLP NT ( 2B + D ) PABX ( 30B + D ) Primary Rate Access 30B + D Basic Rate Access ISDN TLP Slide 9 9 Telecommunication Service Basic TeleService Barrier ServiceTeleService Basic Barrier Service Basic TeleService + Supplementary Services Basic Barrier Service + Supplementary Services Slide 10 10 NT PBX PSTN N-ISDN PSPDN 30B+D 2B+D BRAPRA Basic ISDN Concepts TA FAX Passive bus Slide 11 11 NT2NT1LTET TA IN Reference model and Interface TE 1 ISDN TERMINAL TE 2 NON-ISDN TERMINAL STUV R Non ISDN Standard Basic Rate 192 KBps Primary Rate 2048 Kbps Slide 12 12 Terminology ET Exchange Terminal TE 1 Terminal type 1, digital or ISDN terminal TE 2 Terminal type 2, non ISDN terminal NT 1 Network Terminal type 1, connect ISDN Subscriber with netwrok NT 2 Network Terminal type, connect non-ISDN Subscriber with netwrok via TA TA Terminal Adaptor, connect ISDN with non-ISDN subcriber R Interface non ISDN termina with network S Interface between NT 2 and ISDN terminal T Interface between NT 2 and NT 1 U InterfaceInterface between NT 1 and LT V Interface between LT and ET Slide 13 13 Three types ISDN standard bearer services : 3.1 KHz audio, used in modemtrafficand in intercommunication with non-ISDN services. 64 Kbpsunrestricted, providing a transparant 64 Kbps connection (no echo suppresor & bit manipulation). Speech, 64 Kbps voice connection, tranparancy is not guarranted. The examples of teleservice : Telephony 3.1 KHz and Telephony 7 KHz Telefax group2/3 and telefax group 4 Video Text Video telephony Slide 14 14 ISDN Basic Service Circuit Switch Modes 64 Kbps, unrestricted 64Kbps, for speech 64 Kbps, for audio3,1 Khz Alternative speech / 64 Kbps, unrestricted 2 X 64 Kbps, unrestricted 384 Kbps, unrestricted 1536 Kbps, unrestricted 1920 Kbps, unrestricted For circuit switched data For conversi to analog For transfer of data during a speech call Packet Switched Mode Virtual and permanent - virtual circuit Connectionless User signalling Slide 15 15 ISDN Teleservice Telephony Teletext Telefax 4 (Fax Group 4) Mixed mode doc transfer Videotext Telex Slide 16 16 ISDN Supplementary Services Number Identification : Direct Dialling Multiple subcriber number Calling Line Identificatin Presentation (CLIP) Calling Line Identificatin Retriction Connected line Identification Presentation Connected line Identification Restriction Malicious call Idebtification Sub Adressing Call Offering Call transfer Call forwarding Busy Call forwarding No Reply Call forwarding unconditional Call Deflectyion Line Hunting Slide 17 17 ISDN Supplementary Services (Cntonued) Call Completion Call waiting Call Hold (allow call tobe interrupted and re-established) Call completion to busy subcribers Multi Party : Conference Calling Three party Service Community Interest : Closed User Group (terbatas hanya untuk anggota grup, dengan fasilitas tambahan) Private Numbering Plan Charging : Credit Card Calling Advice of Charge Reverse Cahrging Additional information transfer : User to user Signalling Slide 18 18 Switcging and switch Control PSTN and ISDN are ussualy combinedto form dual in which theu usethe same resources. Since both digitised are 64 Kbps circuit switching, the two netwqork can share subscriber switches as well as group switch equipment. ISDN local Transit PSTN local Transit SS-7 STP Common Functions : processors, group switches,etc Application Platform Figure of Outline PSTN and ISDN exchange Slide 19 19 Group Switch ETC Access server Signalling Equipment Switching Part Control systems O & M ChargingSupllementary Services Switch Control Signalling Subscribers Data (1) (2) (3) (4) (5) (7) (6) (8) (9) (10) To other network or exchange To local Internet router Subscriber stage Local Exchange in PSTN/ISDN Slide 20 20 Legend : (1). The access circuit (2). Digital line board for connection of digital access (3). The analysis of signalling (4). The switch control will be much more complex, (5). Others supplementary services (6). Charging function is more complicated. (7). Subscribers data for different types of terminal. (8). Capable for interworking witch other ISDN Exchange (9). Some are equiped with X.25 traffic or B or D channels. (10). Access for internet Slide 21 21 INTELLIGENT NETWORK An Intelligent Network consist of a number of basic elements, the switching and transmission facility to carry the call traffic. The additional part of IN are : 1.Additional processing associated with the basic switch. 2.Information resourcesthat are necessary for the provision of special features. 3.Service contreol facility that control the provision ofspecial features and services- the basic network and the information resources are used to provide these services. Slide 22 22 SWITCH Service Control Point Service Management System TERMINAL Intelligent Perpheral Data Base Interface A Interface C Interface B Simple diagram of Intelligent Network Manage services: billing, authorization, and monitoring Handle data base interrogation and contol routing Recorded announcement facility Slide 23 23 INTELLIGENT NETWORK SERVICES The main focus of standardisation is definition of SIB ( Service Independent Building Blocks) as a functionality provided by Data Base, for examples : Announcement Notification announcement complete Collect user information Charging information Traffic measurement Insert data, modify data Time dependent/independent decision Screening Slide 24 24 Example of Intelligent Network Services : Free call (advance free phone call) Credit call (Credit card calling) Universal acess number (Unicall) Televoting (Vote call) VPN (Virtual Private Network) Premium rate UPT (universal Personal Telecommunication) Three way services Emergency Services Intelligent Access and Routing. Slide 25 25 Free callCaller special number eg. 0800 Credit call (Credit card calling)The customer automaticall;y charge on bank or credit card account Universal acess number (Unicall)Aloows the subscriber with several terminating in any number of location to be reach with unique number. Televoting (Vote call)Voting via telephone call to deliver an opinion. VPN (Virtual Private Network)Assign circuit when calls are in progress, Sharing transmission, 2Mbps switch, numberingplan for private network Premium rateWide vrietyof informationcan get from numerous information provider UPT (universal Personal Telecommunication) To give user ability to make and receive calls at any point on any number of fixed networks. Three way servicesThree party communication Emergency ServicesIncidental service call, may direct to hospital. Intelligent Access and Routing.Can choose routingaver available networks that make best to use as option. Slide 26 26 ISDN Standard : 1.ITU-T 2.ETSI ( European Telecommunication Standardization Institute) 3.IETF ( Internet Engineering Task Force ) IN Standard : Prepare by : 1.ITU-T (CCITT) and 2.ETSI ( European Telecommunication Standardization Institute) Slide 27 27