뿭듸ퟛ뫏튵컱쫽ퟖ췸폫ATM뻖폲췸샮뷲짺?뫩엥쇕?돂틢퓆?뇠훸쟥뮪듳톧돶냦짧
(뺩)탂뗇ퟖ158뫅쓚죝볲뷩??ퟔ1993쓪쒩,퓚쫀뷧랶캧쓚쿆웰쇋탋붨맺볒탅쾢믹뒡짨쪩(NII),벴탅쾢룟쯙릫슷뗄죈뎱ꆣ뿭듸ퟛ뫏튵컱쫽ퟖ췸(B?ISDN)쫇횧독NII뗄뒫쫤욽첨,쯼뻟폐ퟣ릻뗄탅뗀죝솿뫍떼죫탂튵컱뗄쇩믮탔ꆣATM뻖폲췸(ATM?LAN)뿋럾쇋뒫춳LAN릲쿭뒫쫤쎽쳥뗄훮뛠좱뗣,쪵쿖쇋폫B?ISDN뗄컞러솬뷓,듓뛸뎹뗗쿻돽쇋뒫쫤욿뺱ꆣATM벼쫵쫇쪵쿖B?ISDN뫍ATM?LAN뗄맘볼벼쫵ꆣ놾쫩틔ATM캪뫋탄쾵춳뗘닻쏷쇋ATM뗄풭샭ꆢ춨탅킭틩ꆢ붻뮻벼쫵,늢퓚듋믹뒡짏뷩짜쪵쿖ATM?LAN뗄솽훖랽쪽:LAN럂헦뫍IPoverATMꆣATM벼쫵퓚늻뛏랢햹뫍췪짆,ITU?T뫍ATM싛첳늻뛏췆돶탂뗄킭틩뫍맦랶,퓚퓄뛁놾쫩쪱펦벰쪱닎퓄폐맘컄쿗뫍맦랶ꆣ놾쫩뗄훘뗣쫇뗚3헂B?ISDN/ATM킭틩뫍뗚7헂ATM?LANꆣ놾쫩뿉ퟷ캪뗧ퟓ릤돌폫볆쯣믺튵놾뿆짺뫍퇐뺿짺뷌닄,튲뿉ퟷ캪듓쫂뗧탅폫볆쯣믺췸싧릤ퟷ뗄뿆퇐죋풱뫍릤돌벼쫵죋풱뗄닎뾼쫩ꆣ춼쫩퓚냦뇠쒿(CIP)쫽뻝뿭듸ퟛ뫏튵컱쫽ퟖ췸폫ATM뻖폲췸/샮뷲짺뗈뇠훸?-놱뺩:쟥뮪듳톧돶냦짧,1997ISBN7?302?02759?5ꋱ?뿭ꆭ?ꋲ?샮ꆭ?ꋳ?뿭듸춨탅쾵춳?룅싛?ꋴ?TN914?4훐맺냦놾춼쫩망CIP쫽뻝뫋ퟖ(97)뗚25852뫅돶냦헟:쟥뮪듳톧돶냦짧(놱뺩쟥뮪듳톧킣쓚,폊뇠100084)?틲쳘췸뗘횷:펡쮢헟:놱뺩쫐쟥뮪풰붺펡뎧랢탐헟:탂뮪쫩뗪ퟜ뗪놱뺩뿆벼랢탐쯹뾪?놾:787ꇁ10921/16?펡헅:13?75?ퟖ쫽:321잧ퟖ?닥춼:1튳냦?듎:1998쓪1퓂뗚1냦?1998쓪1퓂뗚1듎펡쮢쫩?뫅:ISBN7?302?02759?5/TNꆤ81펡?쫽:0001ꆫ5000뚨?볛:17?50풪
탲70쓪듺쒩ꆢ80쓪듺돵퓚쪵쿖쇋햭듸ퟛ뫏튵컱쫽ퟖ췸(N?ISDN)틔뫳,캪쇋쪵쿖뮰틴ꆢ룟쯙쫽뻝폫춼쿱튵컱뗄벼쫵ퟛ뫏,죋쏇쿈뫳뷸탐맽춻랢붻뮻ꆢ뛠쯙붻뮻뫍뚯첬붻뮻뗈뛠훖벼쫵뗄퇐뺿,떫뚼틲헢킩벼쫵뗄뢴퓓탔뛸훐춾춣횹ꆣ짔뫳,쏀맺톧헟JohnTurner뫍램맺뗄CENT릫쮾벸뫵춬쪱쳡돶쇋ꆰ뿬쯙럖ퟩ붻뮻(FPS)ꆱ뫍ꆰ틬늽쪱럖(ATD)붻뮻ꆱ뗄룅쓮ꆣFPS뫍ATD캪틬늽틆쒣쪽(ATM)뗄쏈톿ꆣ쯼쏇뗄돶쿖쪹뗃뮰틴ꆢ쫽뻝폫춼쿱튵컱뗄ퟛ뫏붻뮻돉캪뿉쓜,틲뛸쫀뷧짏뫜뛠춨탅폫볆쯣믺릫쮾ꆢ룟뗈풺킣뫍뿆퇐믺릹뚼럗럗춶죫쿠떱뗄죋솦폫컯솦뷸탐퇐뺿폫뾪랢ꆣ떽80쓪듺쒩,틑폐10폠훖ATM붻뮻믺컊쫀ꆣ1989쓪,잰맺볊뗧탅솪쏋뗄뗧놨뗧뮰톯캯풱믡(CCITT)뗄뗚18퇐뺿ퟩ퓚ퟛ뫏쇋틑폐뗄퇐뺿돉맻뗄믹뒡짏쳡돶쇋튻훖탅쾢뒫뗝뗄탂랽쪽ꆪꆪ틬늽틆쒣쪽(ATM),늢쏷좷붫ATMퟷ캪쪵쿖뿭듸ퟛ뫏튵컱쫽ퟖ췸(B?ISDN)뗄튻룶뷢뻶랽낸ꆣB?ISDN쫇평뿭듸폃뮧훕뛋짨놸/뿭듸폃뮧훕뛋췸싧(B?CPE/B?CPN),뿭듸뷓죫췸(B?AN),ATM,뿭듸뒫쫤췸(B?TN)틔벰뿭듸췸맜(B?NM)ퟩ돉ꆣ췸싧뗄뫋탄쫇붻뮻,ATM쫇쪵쿖B?ISDN뗄뫋탄벼쫵ꆣ듓헢룶틢틥살쮵,ATM뗄킭틩ꆢ탅쇮뫍뿘훆뗈튲뻍쫇B?ISDN뗄킭틩ꆢ탅쇮뫍뿘훆쇋ꆣ듓뻟폐ATM뗄쏈톿웰훁뷱ATM듳쳥짏뿉럖캪솽룶뷗뛎:듓1983쓪훁1992쓪뗄쪮쓪볤캪벼쫵쫔퇩뷗뛎,듓1993쓪웰훁뷱캪튵컱쫔퇩뷗뛎ꆣ뗚튻룶뷗뛎쫇틔뿆퇐뫍릤튵늿쏅캪훷,웤훷튪뗄뇪횾쫇ATM룅쓮뗄떮짺뫍ATM붻뮻믺뗄돶쿖ꆣ뻝늻췪좫춳볆,떽1992쓪뗗틑폐20폠훖ATM붻뮻믺춶죫짌폃ꆣ뗚뛾뷗뛎쫇틔퓋펪릫쮾캪훷뷸탐쪾랶탔뗄튵컱쫔퇩캪웤쳘헷,훷튪튵컱폐쫓욵뗣능(VOD)ꆢ뿭듸탅쾢닩톯ꆢ풶돌뷌폽ꆢ풶돌튽쇆ꆢ볒춥릺컯ꆢ풶돌킭춬냬릫뗈ꆣ틔ATM캪믹뒡뗄B?ISDN뇈틔췹죎뫎튻훖췸싧뚼튪뢴퓓뗃뛠,틲캪쯼튪ퟛ뫏뒦샭뮰틴ꆢ쫽뻝벰춼쿱튵컱ꆣ헢킩튵컱뗄쳘탔닮뇰뫜듳ꆣ샽죧,뮰틴튵컱뿉쫓캪욽뫢쯦믺맽돌,떫쫽뻝튵컱퓲뻟폐춻랢탔,뛸춼쿱튵컱뗄쳘탔늻뷶좡뻶폚뎡뺰,뛸쟒폫뇠틫싫웷쏜쟐쿠맘ꆣ폃뮧뛔헢킩튵컱뗄럾컱훊솿뗄튪쟳틠늻춬ꆣ샽죧,뮰틴튵컱뛔쪱퇓쏴룐,뛸쫽뻝튵컱뛔컳싫싊튪쟳뫜퇏,춼쿱튵컱뛔쪱퇓뫍컳싫싊뻹폐쿠떱룟뗄튪쟳ꆣ죧맻쮵췸싧뗄뫋탄쫇붻뮻,쓇쎴붻뮻뗄뫋탄쫇뿘훆ꆣ죧맻듓뿘훆싛뷇뛈붫폃뮧뛔튵컱뗄럾컱훊솿튪쟳쫓캪쒿뇪몯쫽,쓇쎴ATM튪뒦샭뗄쫇튻룶럇쿟탔풼쫸쳵볾쿂뗄뛠쒿뇪쯦믺뿘훆컊쳢ꆣ쫀뷧랶캧쓚탅쾢룟쯙릫슷뗄탋웰,쳘뇰쫇Internet췸뗄뿭듸뮯뫍룟쯙뮯뗄튪쟳캪ATM벼쫵ퟟ죫짌폃쳡릩쇋튻룶벫캪솼뫃뗄믺폶ꆣATM벼쫵쫗쿈퓚쫽뻝춨탅ꆢ벴볆쯣믺춨탅훐뗃떽펦폃ꆣ놾쫩뻍쫇퓚헢튻탎쫆쿂돶냦뗄,쯼뗄돶냦컞틉믡췆뚯ATM벼쫵폫볆쯣믺춨탅뗄뷡뫏ꆣ놾쫩릲럖8헂:뗚1ꆫ4헂룅쫶쇋틔ATM캪믹뒡뗄B?ISDN뗄믹놾룅쓮ꆢퟩ돉ꆢ쳥쾵뷡릹폫킭틩뗈쓚죝;뗚5ꆫ7헂쿪쾸붲쫶쇋ATM붻뮻믺뷡릹,쳘뇰쫇폃폚쫽뻝춨탅뗄틔ꆤꋱꆤ
ATM벼쫵캪믹뒡뗄뗚뛾듺뻖폲췸(ATM?LAN)뗄풭샭;ퟮ뫳튻헂뷩짜쇋ATM뇪ힼ뮯뗄뚯쿲ꆣ놾쫩틔ATM벼쫵퓚볆쯣믺춨탅훐뗄펦폃캪훘뗣,쿪쾸뗘탰쫶쇋IPoverATMꆢ뻖폲췸럂헦ꆢ탩쓢뻖폲췸ꆢ췸싧톰횷ꆢ폃췸볤뷓뿚(PNNI)ꆢ췸싧맜샭뗈,죧듋쿪쾸뗄싛쫶퓚맺쓚짐쫴쫗듎ꆣ뛁헟뿉듓훐헒떽붫ATM벼쫵펦폃폚볆쯣믺춨탅ꆢ쳘뇰쫇Internet췸훐뗄튻쳵춾뺶ꆣ쿠탅춨맽놾쫩뗄톧쾰뛁헟믡뛔ATM벼쫵폐쾵춳뛸좫쏦뗄샭뷢뫍헆컕ꆣ맋톧뗀폊뗧늿뗧탅뿆톧벼쫵퇐뺿풺1997쓪쿄폚놱뺩ꆤꋲꆤ
쒿??슼뗚1헂?B-ISDN뗄믹놾룅쓮ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ11?1?N?ISDN룅쫶ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1?1?1?1?N?ISDN뗄떼죫놳뺰ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ11?1?2?N?ISDN뗄믹놾쳘뗣ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ21?1?3?N?ISDN뗄뻖쿞탔ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ31?2?B?ISDN뗄쳘뗣ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ41?3?횧돖B?ISDN뗄ATM벼쫵뫍맢뒫쫤벼쫵ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ5?1?3?1?맢뒫쫤벼쫵붵뗍쇋뒫쫤돉놾ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ51?3?2?ATM벼쫵붵뗍쇋뒫쫤뒦샭뗄돉놾ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ51?4?B?ISDN쳡릩뗄튵컱ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ7?1?4?1?붻뮥탍튵컱ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ71?4?2?럖엤탍튵컱ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ8뗚2헂?B-ISDN(ATM)췸싧쳥쾵뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ92?1?ATM췸싧벼쫵룅쫶ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ9?2?1?1?ATM췸싧뷡릹뗄믹놾풪쯘ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ92?1?2?ATM솬뷓벰웤쪶뇰랽램ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ92?1?3?ATM췸싧쓚뗄톰슷ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ92?1?4?탩춨뗀폫탩춨슷ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ102?1?5?탅풪뗄닰ힰꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ112?1?6?ATM췸훐뗄럇솬뷓탍춨탅ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ122?2?B?ISDN폃뮧?췸싧뷓뿚(B?UNI)ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ13?2?2?1?B?ISDN폃뮧?췸싧뷓뿚뗄닎뾼엤훃ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ132?2?2?B?UNI뗄뷓뿚쯙싊ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ142?2?3?B?UNI펦뻟놸뗄벼쫵탔쓜ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ142?2?4?뷓뿚뗄믹놾뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ152?3?B?ISDN뗄럖닣뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ16?2?3?1?B?ISDN뒫쫤췸뗄럖닣ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ162?3?2?뒫쫤췸뗄ퟩ돉풪쯘ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ172?3?3?뒫쫤췸뗄릦쓜뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ17뗚3헂?B-ISDN/ATM킭틩ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ193?1?B?ISDN킭틩뗄럖샠폫쳘뗣ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ19?ꆤꋳꆤ
3?1?1?B?ISDN킭틩뗄럖샠ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ193?1?2?B?ISDN킭틩뗄쳘뗣ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ213?1?3?B?ISDN킭틩뗄럖닣뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ213?2?컯샭닣ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ24?3?2?1?컯샭쎽쳥ퟓ닣(PM)ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ243?2?2?뒫쫤믡뻛ퟓ닣(TC)ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ263?3?ATM닣ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ29?3?3?1?ATM닣솬뷓ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ293?3?2?탅풪뷡릹폫탅춷릦쓜ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ303?3?3?ATM닣쪵쿖뗄릦쓜ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ333?4?ATM쫊엤닣(AAL)ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ34?3?4?1?AAL튵컱ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ343?4?2?AALType1ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ363?4?3?AALType2ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ393?4?4?AALType3/4ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ393?4?5?AALType5ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ453?5?탅쇮킭틩ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ48?3?5?1?탅쇮쓜솦ퟩ1ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ483?5?2?탩춨슷뗄샠탍폫탎쪽ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ483?5?3?떽탅쪱뗄탅쇮맦돌ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ503?5?4?탅쇮VC뗄붨솢/쫍럅맦돌ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ513?5?5?탅쇮폃뗄AAL맦돌ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ523?5?6?킭틩ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ533?6?튵컱솿뿘훆뫍OAM킭틩ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ54?3?6?1?튵컱솿뿘훆ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ543?6?2?OAM킭틩ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ56뗚4헂?SDH뷓뿚폫NNIꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ614?1?춬늽쫽ퟖ쾵쇐뗄떼죫놳뺰ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ61?4?1?1?PCM쾵쇐ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ614?1?2?닉폃춬늽쫽ퟖ쾵쇐뗄뇘튪탔ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ614?1?3?150Mb/s뷓뿚톡좡9탐ꇁ270쇐ퟖ뷚뗄샭평ꆭꆭꆭꆭꆭꆭꆭꆭꆭ634?2?뾪쿺ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ644?3?춬늽ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ654?4?NNI뗄횡뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ65뗚5헂?ATM붻뮻믺ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ705?1?ATM붻뮻믺룅쫶ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ70?ꆤꋴꆤ
5?1?1?VPI붻뮻폫VCI붻뮻ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ705?1?2?ATM붻뮻믺뗄릦쓜ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ705?2?ATM붻뮻뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ73?5?2?1?쫤돶뮺듦탍붻뮻뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ735?2?2?릲쿭뮺듦탍붻뮻뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ745?2?3?뻘헳뮺듦탍붻뮻뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ745?2?4?쫤죫뮺듦탍붻뮻뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ755?2?5?쫤죫쫤돶뮺듦탍붻뮻뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ755?2?6?Banyan붻뮻뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ765?3?ATM붻뮻믺퇹샽ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ78?5?3?1?훷믺탔쓜뫍벼쫵횸뇪ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ785?3?2?붻뮻믺뗄릦쓜뫍뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ785?3?3?솬뷓뿘훆ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ785?3?4?펲볾뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ795?3?5?죭볾뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ82뗚6헂?뒫춳LAN춨췹ATM-LAN뗄뗀슷ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ846?1?듓뒹횱탍췸싧쿲쮮욽탍췸싧랢햹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ84?6?1?1?춨탅췸뗄랢햹맽돌ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ846?1?2?LAN벼쫵뗄랢햹뚯쿲ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ856?2?LAN뗄뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ87?6?2?1?LAN뗄믹놾뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ876?2?2?UTP탍LANꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ916?2?3?붻뮻탍LANꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ926?3?룟쯙LAN/뛠쎽쳥LANꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ94?6?3?1?100Mb/s룟쯙LANꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ946?3?2?
7?1?ATM?LAN떼죫뗄놳뺰벰웤쳘뗣ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ116?7?1?1?ATM?LAN뗄쳘뗣ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1167?1?2?ATM?LAN뗄믹놾릦쓜ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1177?2?ATM?LAN뗄믹놾쳥쾵뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ117?7?2?1?ATM?LAN뗄킭틩ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1177?2?2?릹돉ATM?LAN뗄믹놾풪쯘ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1197?3?ATM?LAN뗄컯샭뷓뿚ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ120?7?3?1?100Mb/s뛠쒣맢쿋뷓뿚ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1207?3?2?155Mb/s뷓뿚ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1217?3?3?51Ms/s3샠UTP뷓뿚ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1227?3?4?155Mb/s5샠UTP/STP뷓뿚ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1237?4?ATM닣ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ123?7?4?1?탅풪뺻뫉좡뚨48ퟖ뷚뗄살평ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1237?4?2?탩춨뗀폫탩춨슷ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1247?4?3?뛔GFC/PT릦쓜뗄뷸튻늽쮵쏷ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1257?5?ATM?LAN뗄ATM쫊엤닣ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1267?6?ATM?LAN뗄뗘횷뫍솬뷓붨솢랽쪽ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ128?7?6?1?ATM?LAN탅쇮킭틩뗄뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1287?6?2?ATM?LAN뗘횷ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1297?6?3?뗣뛔뗣솬뷓ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1347?6?4?뛠뗣솬뷓ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1367?6?5?샻폃죎틢춬능뗘횷럃컊럾컱웷ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1397?7?ILMI뗘횷뗇슼폫PNNI톰슷ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ140?7?7?1?ILMI뗘횷뗇슼뫍톰슷뗄죎컱ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1407?7?2?샻폃ILMIퟔ뚯뗇슼뗘횷ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1417?7?3?PNNI톰슷쒣탍ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1427?7?4?럖닣뮯풴뷚뗣톰슷랽쪽ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1437?8?틔첫췸뫍ATM?LAN춨탅랽쪽룅튪ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ147?7?8?1?틔첫췸폫ATM?LAN뗄쟸뇰ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1477?8?2?틔첫췸뗄춨탅풭샭ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1487?8?3?ATM?LAN춨탅랽쪽룅쫶ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1507?9?IPoverATM랽쪽ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ151?7?9?1?IPoverATM룅튪ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1517?9?2?IPoverATM뗄춨탅맦돌ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1527?9?3?쿲ATMARP럾컱웷뗇슼뗘횷(돵쪼뮯)맦돌ꆭꆭꆭꆭꆭꆭꆭꆭ1547?9?4?IP럖ퟩ뗄럢ힰ랽쪽ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1557?9?5?ATMARP럖ퟩ뫍InATMARP럖ퟩ뗄럢ힰ랽쪽ꆭꆭꆭꆭꆭꆭ1557?9?6?IPoverATM랽쪽쿂ATM?LAN뗄뇪ힼ뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭ156ꆤꋶꆤ
7?9?7?ROLC톰슷랽쪽ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1577?9?8?IPoverATM랽쪽훐틅쇴뗄컊쳢ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1607?10?LAN럂헦랽쪽ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ161?7?10?1?LAN럂헦룅튪ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1617?10?2?LAN럂헦랽쪽쿂뗄ATM?LAN뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1617?10?3?LAN럂헦킭틩닣뗄뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1637?10?4?LAN럂헦랽쪽뗄춨탅맦돌ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1637?10?5?LAN럂헦춨탅맦돌뗄펦폃쪵샽ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1667?10?6?틔첫횡뗄럢ힰ랽쪽ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1677?10?7?탩쓢LAN폫릤ퟷퟩLANꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1687?10?8?IPoverATM폫LAN럂헦랽쪽뗄뇈뷏ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1687?10?9?LAN럂헦랽쪽뗄폅좱뗣ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1697?11?튵컱솿뿘훆ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ170?7?11?1?튵컱솿뿘훆뗄틢틥ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1707?11?2?튵컱솿닎쫽ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1707?11?3?ATM췸싧뗄튵컱샠탍ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1727?11?4?뫴뷐뷓쓉뿘훆ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1747?11?5?ABR튵컱닉폃뗄랴삡펵죻뿘훆ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1767?12?ATM?LAN뗄췸싧맜샭ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ178?7?12?1?ATM?LAN췸맜룅쫶ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1787?12?2?샻폃SNMP맜샭뒫춳LAN뗄췸맜벼쫵ꆭꆭꆭꆭꆭꆭꆭꆭꆭ1797?12?3?ATM?LAN뗄췸맜쒣탍ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1827?12?4?ILMIMIB(ATMUNIMIB)ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1847?12?5?ATM?LAN췸맜쾵춳뗄릦쓜ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1867?12?6?ATM?LAN췘웋뷡릹뗄ퟔ뚯랢쿖릦쓜ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1887?12?7?풶돌붨솢PVC뗄릦쓜ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ190뗚8헂?ATM췸싧벼쫵뗄뇪ힼ뮯뚯쿲ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1918?1?뇪ힼ뮯뗄뇘튪탔ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1918?2?ATM췸싧벼쫵뗄훷튪뇪ힼ뮯믺릹폫뇪ힼ뮯랶캧ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ191?8?2?1?맺볊뇪ힼ뮯믺릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1918?2?2?맺볒뇪ힼ뮯믺릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1938?2?3?탐튵뇪ힼ뮯믺릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1948?3?ITU?T뗄뇪ힼ뮯뚯쿲ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ194?8?3?1?ATM뇪ힼ뮯뗄랢햹맽돌ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1948?3?2?ITU?T뗄B?ISDN붨틩쳥쾵ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1978?4?ATM싛첳뗄뇪ힼ뮯뚯쿲ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ197?8?4?1?ATM싛첳뗄쒿뇪폫돉솢뗄놳뺰ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ197ꆤꋷꆤ
8?4?2?ATM싛첳뗄ퟩ횯뷡릹ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1978?4?3?ATM싛첳뇪ힼꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ1978?4?4?ATM싛첳폫웤쯻뇪ힼ뮯ퟩ횯뗄맘쾵ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ199닎뾼컄쿗ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ201뢽슼?ATMUNIMIB쫷ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ202뫳볇ꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭꆭ205ꆤꋸꆤ
뗚1헂?B-ISDN뗄믹놾룅쓮
췸싧뷓뿚,폃뮧뻍뿉춨맽폃뮧쿟샻폃룷훖춨탅쎽쳥춨탅ꆣ떽80쓪듺쒩,ISDN틑듯떽쪵폃뮯쮮욽ꆣ컒맺퓚ꆰ냋컥ꆱ웚볤췪돉쇋ISDN쪵폃뮯뗄퇐뺿,늢퓚놱뺩뗄죽샯뫓ꆢ훐맘듥뫍톧풺슷튻듸붨솢웰ISDN쪵퇩췸ꆣ1996쓪뾪춨쇋놱뺩훁죕놾뗄ISDN튵컱,늢퓚좫맺22룶돇쫐쪵쿖ISDNꆣ춨뎣컒쏇붫틔쫽ퟖ뗧뮰췸캪믹뒡릹돉뗄ISDN돆ퟷ햭듸ISDN(N?ISDN:Narrowband?ISDN)믲64kb/s쾵쇐ISDN,틔쟸뇰폚틔룟쯙춨탅캪뛔쿳뗄뿭듸ISDN(B?ISDN:BroadbandaspectsofISDN)ꆣ돽쳘쫢뇪쏷췢,놾쫩훐뗄ISDN쫇횸N?ISDNꆣ
뻶ISDN훕뛋뗄뮥춨ꆣ샽죧쏀맺뻍돶쿖쇋솽훖늻춬벼쫵맦랶뗄ISDN,쯼쏇틲뛔ITU?T붨틩뗄쾸뷚뗄뷢쫍뫍뷢뻶랽낸늻춬뛸뇋듋늻쓜뮥춨ꆣ캪듋,훮뛠뎧짌뷡쏋ퟩ돉ISDN싛첳(ISDNforum),뛔벼쫵맦랶뗄쾸뷚뷸탐춳튻늢뷸탐뮥솬쪵퇩,볆뮮퓚쫽쓪쓚ퟮ훕쪵쿖춳튻뗄뷓뿚ꆣ3.쳡릩훇쓜뮯뗄춨탅튵컱ISDN폃뮧?췸싧뷓뿚돽샻폃B춨슷쳡릩룷훖뗧탅튵컱췢,뮹뿉샻폃D춨슷퓚훕뛋볤뷸탐춨탅뿘훆,벴훇쓜뮯뗄춨탅뒦샭ꆣ춨폃룶죋춨탅(UPT:UniversalPersonalTelecommunication)뻍쫇훇쓜춨탅튵컱뗄튻룶쪵샽ꆣ컒쏇횪뗀,훁뷱캪횹춨탅췸죔좻캬돖ퟅ뷼냙쓪살쯹퇘폃뗄뫅싫쳥쾵ꆣ쎿룶훕뛋(퇏룱뗘쮵,붻뮻믺뗄튻쳵폃뮧쿟슷)뛔펦튻룶뗧탅뫅싫ꆣ춨탅췸룹뻝뫅싫쪶뇰훕뛋늢틔듋살쟸럖폃뮧ꆣ쪹폃헟튻떩샫뾪ퟔ벺뗄훕뛋,뻍늻쓜벰쪱뷓쫕뫴뷐ꆣUPT튪쟳붫쪶뇰훕뛋(폃뮧쿟슷)뗄뫅싫쳥쾵룄뇤캪횱뷓쪶뇰룶죋뗄뫅싫쳥쾵ꆣ쎿룶폃뮧럖엤폐튻룶늻폫죎뫎컯샭쿟슷믲훕뛋랢짺솪쾵뗄룶죋뗧탅뫅싫(PTN:PersonalTelecommunicationNumber),쯼쫇쪶뇰폃뮧뗄캨튻뇪횾,늻틲폃뮧쯹뒦뗄뗘샭캻훃뫍쪹폃뗄훕뛋뛸룄뇤ꆣ평듋뿉볻,샻폃PTN벴뿉싺ퟣ컞싛뫎쪱ꆢ뫎뗘뚼쓜뷸탐춨탅뗄탨쟳ꆣ퓚ISDN훐뫜죝틗쪵쿖UPT릦쓜ꆣ
틔쳡릩냼삨HDTV뗄룟쯙춼쿱튵컱ꆣ3.샻폃뛠훖솬뷓탎쪽쳡릩럡뢻뛠닊뗄춨탅튵컱N?ISDN쫇쫽ퟖ뗧뮰췸뗄릦쓜삩햹,훷튪쳡릩뗣뛔뗣뗄쮫쿲춨탅(붻뮥춨탅)튵컱ꆣB?ISDN돽붻뮥튵컱췢,뮹쳡릩럖엤탍튵컱ꆣ샽죧,뗧쫓맣능틔벰CATV(CableTelevision:폐쿟뗧쫓)훐뗄쫓욵뗣능(VOD:VideoOnDemand)뚼쫴폚럖엤탍튵컱ꆣ
짨놸뗄뷡릹폫탅쾢쯙싊듦퓚ퟅ쏜쟐뗄맘쾵ꆣ듋췢,STM튲늻쫊폚뒦샭쿱볆쯣믺춨탅쓇퇹춻랢탔뫜잿뗄탅쾢ꆣ헢킩뚼쫇쯼만폐뗄좱뗣ꆣ춼
룟쯙뗘뛔탅춷뷸탐뒦샭ꆣ평듋뿉볻,ATM뒫쫤벼쫵죚뫏쇋뗧슷뒫쯍쒣쪽폫럖ퟩ뒫쯍쒣쪽뗄쳘뗣ꆣ탅풪평5ퟖ뷚뗄탅춷뫍48ퟖ뷚뗄뺻뫉릹돉,뗷뷚랢쯍뗄탅풪쫽뿉믱뗃죎틢뗄춨탅쯙싊ꆣ뮻뻤뮰쮵,룟쯙춨탅쪱떥캻쪱볤쓚랢쯍뷏뛠뗄탅풪,뗍쯙춨탅쪱횻랢쯍짙솿탅풪,춨맽뛔탅풪랢쯍볤룴뗄뿘훆뗷헻뒫쫤쯙싊ꆣ
뗚2헂?B-ISDN(ATM)췸싧쳥쾵뷡릹
ATM솬뷓짏뗄룷룶뷚뗣틀듎뷸탐짏쫶닙ퟷ,쪵쿖탅풪퓚ATM췸쓚뗄톰슷,ퟮ훕붫탅풪쯍떽쒿뗄ATM훕뛋ꆣ춼쪾돶쇋헢훖톰슷맽돌ꆣ춼
VCꆣ퓚폃뮧?췸싧뷓뿚(UNI:UserNetworkInterface)짏폃24뇈쳘살뇪쪶ATM솬뷓,웤훐룟8캻쫇탩춨뗀뇪횾럻(VPI:VirtualPathIdentifier),뗍16캻쫇탩춨슷뇪횾럻(VCI:VirtualChannelIdentifier)ꆣ뛔펦ATM솬뷓뇪횾럻훐VPI뫍VCI헢솽늿럖,ATM뷚뗣폐틔쿂솽훖톰슷랽쪽:1.믹폚VPI횵뗄톰슷랽쪽퓚헢훖랽쪽쿂,ATM뷚뗣횻룹뻝VPI횵톰슷,뛸늻뛔VCIퟷ죎뫎뒦샭ꆣ컒쏇붫헢훖샻폃VPI횵뷸탐톰슷닙ퟷ뗄ATM뷚뗣돆ퟷꆰVP뒦샭짨놸(VPH:VPHandler)ꆱꆣ춼훐뗄뷚뗣1뫍뷚뗣2벴VPH,쪵볊짏쯼뻍쫇ATM붻닦솬뷓짨놸ꆣ2.믹폚VCI횵뗄톰슷랽쪽헢훖랽쪽샻폃VC뷸탐톰슷,떫틲퓚늻춬뗄VP훐퓊탭듦퓚뻟폐쿠춬VCI횵뗄VC,쯹틔내VCI횵톰슷쪱펦춬쪱샻폃VPI뫍VCI횵ꆣ컒쏇붫믹폚VPI횵뫍VCI횵톰슷뗄ATM뷚뗣돆ퟷꆰVC뒦샭짨놸(VCH:VCHandler)ꆱꆣ춼훐뗄뷚뗣3벴VCH,쪵볊짏쯼뻍쫇춨뎣쯹쮵뗄ATM붻뮻믺ꆣ
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닰돉탅풪,퓚탅춷훐훃죫폫듋슷평뛔펦뗄VPI뫍VCI횵,붫탅풪랢쯍돶좥ꆣ훘뢴짏쫶맽돌,벴뿉쪵쿖럇솬뷓탍춨탅ꆣ폃ATM췸횧돖럇솬뷓탍춨탅쪱,펦캪럇솬뷓탍춨탅짨훃폃뗄ATM솬뷓ꆣ럱퓲,틲풤쿈캴ퟷ죎뫎짪놨뻍쿲췸싧뒫쯍탅풪,쪹췸싧살늻벰캪웤럖엤췸싧풴,쯼횻뗃릲폃웤쯻춨탅뗄췸싧풴,쯹틔늻쓜놣횤쿻쾢뚪쪧싊뗈춨탅훊솿ꆣ붨솢폃뗄ATM솬뷓뫳,탅풪횱뷓뷸죫ATM췸뗄펰쿬,횻뻖쿞퓚쪹폃춬튻룶ATM솬뷓뗄럇솬뷓탍춨탅뗄랶캧쓚,늻믡퇪벰웤쯻춨탅튵컱ꆣ
B?TE냼삨B?TE1(뻟폐B?ISDN뇪ힼ릦쓜뗄훕뛋)ꆢB?TE2(럇B?ISDN뇪ힼ뗄훕뛋)ꆢN?TE1뫍N?TE2(ISDN뇪ힼ뫍럇ISDN뇪ힼ뗄훕뛋)ꆣ
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뛋뗣펦뻟놸뗄릦쓜VC뛋뗣ퟷ캪짏쫶ꋙ뗄릦쓜,펦뻟폐퓚ATM닣뫍펦폃닣횮볤늻룄뇤탅풪훐탅쾢ퟖ뛎뗄쓚죝뛸뛔웤뷸탐붻뮻뗄릦쓜ꆣퟷ캪짏쫶ꋚ뗄릦쓜,쯼쪵쿖볠닢VC맊헏ힴ첬뫍춨탅훊솿,쿲폃뮧춨놨틬뎣ힴ첬뗄릦쓜ꆢ쪹VC뗄튵컱솿늻뎬맽짌뚨횵뗄뿘훆릦쓜뫍놣돖VC쓚탅풪쮳탲,뛔VP뷸탐VC뢴폃/럖폃뗄릦쓜ꆣ훐볌뗣펦뻟놸뗄릦쓜VP훐볌뗣쪵쿖VP붻닦솬뷓릦쓜,쯼쓜릻쳡릩솬뷓뛠쳵뒫쫤쿟슷,룹뻝VPI횵뫍뿘훆뇭룄뇤VP뗄좥쿲,붫VP럖엤떽볈뚨쿟슷뛋뿚짏뗄릦쓜ꆣVPI횵쫇내VP솴슷(쿟슷쟸볤)럖엤뗄,쎿뺭맽튻룶VP훐볌뗣뻍놻룄킴튻듎ꆣ듋췢,VP훐볌뗣뮹룹뻝탨튪쳡릩VP뗄폃램닎쫽뿘훆UPC릦쓜(횸뿘훆튵컱솿늻뎬맽짌뚨횵뗄릦쓜,쿪볻7?11?2킡뷚)뫍볠뿘VP뗄맊헏ힴ첬벰춨탅훊솿뗄릦쓜ꆣ훐볌뗣펦뻟놸뗄릦쓜VC훐볌뗣쪵쿖VC붻뮻릦쓜,쯼쳡릩솬뷓뛠쳵춨뗀(슷평),룹뻝VCI횵뫍뿘훆뇭룄뇤VC좥쿲,붫VC럖엤떽볈뚨슷평짏뗄릦쓜ꆣVCI횵쫇내VC솴슷(춨뗀쟸볤)럖엤뗄,쎿뺭맽튻룶VC훐볌뗣뻍놻룄킴튻듎ꆣ듋췢,VC훐볌뗣뮹룹뻝탨튪쳡릩VC뗄UPC릦쓜뫍볠뿘VC뗄맊헏ힴ첬벰춨탅훊솿뗄릦쓜ꆣꆤ18ꆤ
뗚3헂?B-ISDN/ATM킭틩퓚B?ISDN/ATM훐폃뮧뫍췸싧볤틔벰붻뮻뷚뗣볤캪쇋붨솢ꆢ놣돖뫍쫍럅춨탅솬뷓,탨튪붻뮻룷훖탅쇮,늢틔춨탅킭틩뗄탎쪽맦뚨웤컯샭솬뷓쳵볾뫍탅쇮붻뮻뗄맦돌ꆣB?ISDN/ATM킭틩쫇퓚뻟폐럖닣뷡릹뗄N?ISDN킭틩뗄믹뒡짏퓶볓쇋B?ISDN쳘폐뗄늿럖릹돉뗄ꆣ킭틩뗄듳늿럖맦돌쫊폃폚뿭듸폃뮧?췸싧뷓뿚ꆣ
죧춼쯹쪾,쯼쫇B?ISDN쓚뗄췸싧뷚뗣볤뗄킭틩믲췸볤킭틩ꆣB?ISDN훐뗄NNI폐솽훖뒫쯍뫴뷐뿘훆탅쇮뗄탎쪽ꆣ튻훖폫N?ISDN쿠춬,춨맽릲슷탅쇮췸(벴웟뫅탅쇮췸)뒫쯍탅쇮,쇭튻훖퓲늻춨맽릲슷탅쇮췸,뛸쫇퓚뷚뗣볤뗄ATM탩춨뗀(VP)쓚뒫쯍뿘훆탅쾢(닎퓄춼)ꆣ춼
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룟닣룷훖튵컱쯹탨뗄릦쓜ꆣ퓚AAL훐맦뚨쇋뛠훖킭틩틔쫊엤늻춬뗄룟닣튵컱ꆣ뮻뻤뮰쮵,떱폫룷훖튵컱폐맘뗄룟닣ힷ볓믲뇤룼릦쓜쪱,AAL쓜뫜뫃뗘뷸탐쫊엤,뛸뛔B?ISDN믹놾릦쓜ꆪꆪ탅풪뒫쯍릦쓜쎻폐죎뫎펰쿬ꆣ춼쪾돶쇋U쏦킭틩ꆣ평춼뿉볻,AAL틔짏뗄킭틩좫늿평ATM훕뛋살뒦샭(헢샯뷶틔폃뮧탅쾢캪샽,늻짦벰뫴뷐붨솢뫍쫍럅ꆣ뫴뷐뿘훆쫇평뿘훆쏦킭틩살뒦샭뗄)ꆣ춼
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쿂쏦뛔뇭훐뗄탅뗀뇠싫짔볓쮵쏷ꆣ퓚맢쿋훐닉폃럇맩쇣싫(NRZ:NonReturntoZero),웤쳘뗣죧춼쯹쪾ꆣ떱솬탸캪싟벭ꆰ1ꆱ쪱,ퟜ쫇돊쿖룟뗧욽,뷶떱돶쿖싟벭ꆰ0ꆱ쪱닅뇤돉뗍뗧욽ꆣ폫듋쿠랴,맩쇣싫(RZ:ReturntoZero)떱돶쿖싟벭ꆰ1ꆱ쪱쿈쳸뇤캪룟뗧욽,뷓ퟅ솢벴략믘ꆰ0ꆱꆣ평폚NRZ싫늻탨튪쪹맢탅뫅듓룟뗧욽쳸뇤돉뗍뗧욽,맊웤쯹탨듸뿭뷏킡,떫쫇튻떩돶쿖솬탸싟벭ꆰ1ꆱ뻍뫜쓑쟸럖룷룶뇈쳘,룸뚨쪱(춬늽)퓬돉삧쓑ꆣ캪듋,퓚ATM훐뛔풭탅뫅뷸탐죆싫(scramble)뒦샭,쪹싟벭ꆰ1ꆱ뫍ꆰ0ꆱ뗄돶쿖룅싊쿠뗈ꆣ뇭
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훂ꆣ캪쇋쳮늹살ퟔATM닣뗄룷탅풪횮볤뗄볤쾶,펦퓚TC훐짺돉뿕탅풪늢뷸탐쳮돤닙ퟷꆣ뿕탅풪뻟폐쳘뚨뗄탅춷횵(볻뇭),뷓쫕랽샻폃듋횵쪶뇰뿕탅풪늢볓틔엗웺ꆣ뿕탅풪뗄탅쾢ퟖ뛎훐훘뢴쳮돤ꆰ01101010ꆱ쒣쪽뗄횵,웤쒿뗄쫇캪쇋톸쯙붨솢캻춬늽뫍뇈쳘뚨쪱ꆣ뇭
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뇭
뇭쇐돶쇋럖엤룸PT뗄뇈쳘횵ꆣ뇭
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AAL킭틩ꆣ퓚B?ISDN퇐뺿뗄돵웚,죏캪튵컱샠탍(servicecategory)뫍AAL킭틩샠탍(틔쿂볇ퟷAALType)듦퓚ퟅ튻튻뛔펦뗄맘쾵ꆣ쯦ퟅ퇐뺿뗄짮죫,AALType3뫍Type4틑뺭뫏늢,늢쟒폖탂쳡돶쇋볲뮯뗄AALType5ꆣ뇭쪾돶쇋쯼쏇횮볤뗄맘쾵ꆣ뇭
ServiceSpecificCS)ꆣ뮻뻤뮰쮵,CPCS쪵쿖쇋솬뷓탍(CO:ConnectionOriented)춨탅튵컱뫍럇솬뷓탍(CL:Connectionless)춨탅튵컱훐릫릲뗄릦쓜,SSCS쪵쿖룷ퟔ튵컱쳘폐뗄릦쓜ꆣ뛔솬뷓탍튵컱폖틔튵컱쳘뚨솬뷓탍킭틩(SSCOP:ServiceSpecificConnectionOrientedProtocol)맦뚨쇋쯹폐CO튵컱뗄릫릲릦쓜;틔튵컱쳘뚨킭뗷릦쓜(SSCF:ServiceSpecificCoordinationFunction)맦뚨쇋늻춬CO튵컱뗄쳘폐릦쓜ꆣ펦떱힢틢,퓚쒳킩펦폃훐폐쪱튲뿉쓜컞SAR믲CS릦쓜ꆣ샽죧,뛔듲쯣폃ퟣ
룶ퟓퟖ뛎틔쪵쿖뛠룶릦쓜ꆣ웤훐폃3뇈쳘뗄탲뫅볆쫽(SC:SequenceCounter)뇭쪾탅풪뗄탲뫅,1뇈쳘뗄믡뻛ퟓ닣횸쪾(CSI:CSIndication)살횸쪾쫇럱듦퓚믡뻛ퟓ닣릦쓜틔벰쪵쿖쪱훓킣헽릦쓜뗈ꆣ탅풪탲뫅뗄돵횵캪0,랢쯍뛋틔쒣8톭뮷(0ꆫ7훘뢴쪹폃)틀듎뛔룷SAR?PDU뗄SC뢳횵ꆣ(2)탲뫅놣뮤(SNP:SequenceNumberProtection)ퟖ뛎SNP폃폚뛔SNퟖ뛎뷸탐닮듭킣퇩뫍뻀듭ꆣ쯼쪵쿖쇋뛾벶놣뮤,쫗쿈폃3뇈쳘뗄CRC뿘훆뇈쳘놣뮤SNퟖ뛎(웤짺돉뛠쿮쪽캪3P(x)=x+x+1),퓙뛔잰7뇈쳘폃얼킣퇩살뷸탐놣뮤ꆣ샻폃헢훖랽쪽뿉뻀헽1뇈쳘컳싫뫍볬닢돶뛠룶뇈쳘뗄닮듭ꆣ맦랶(1)CS릦쓜쿂쏦틔뗧슷럂헦ꋙ(circuitemulation)벰틴욵탅뫅뒫쯍캪샽뷸탐쮵쏷ꆣꋙAAL폃뮧탅쾢뒦샭:AAL?SDUꋚ(ServiceDataUnit:튵컱쫽뻝떥풪)뎤뛈캪1ퟖ뷚,떱듕싺47룶AAL?SDU뫳튻웰뒫룸AALꆣ헢샯뗄SDU쫇횸샻폃AALType1킭틩뗄폃뮧뒫살뗄쫽뻝떥캻ꆣꋚ탅풪퇓쪱뚶뚯뗄컼쫕:떱탅풪퓚죝탭뗄퇓쪱뇤뮯랶캧쓚쎻폐떽듯쪱,캪쇋쿲룟닣쳡릩뫣뚨뗄뇈쳘쇷,펦닥죫쫊떱쫽솿뗄퇆SAR?PDU(DummySAR?PDU)ꆣ떱뮺듦웷틧돶쪱,SAR?PDU뻍놻엗웺뗴,춼쪾돶쇋헢훖뒦샭맽돌ꆣ평춼뿉볻,ATM닣횻ퟶ탅풪뒫쯍폃,쯹탨뗄튵컱훊솿평짏닣뗄AAL살놣횤ꆣ쯼뿘훆뷓쫕뮺듦웷틔컼쫕퇓쪱뚶뚯ꆣꋛ탅풪뚪쪧폫컳닥탅풪뗄뒦샭:뷓쫕뛋춨맽볬닩SAR?PDU뗄SC횵뗄솬탸탔살좷뚨쫇럱돶쿖탅풪뗄뚪쪧뫍컳닥ꆣ떫늢캴뛔톭뮷샻폃탲뫅뗄쳵볾쿂죧뫎좷뚨탅풪뚪쪧룶쫽ퟶ돶맦뚨ꆣ샽죧,퓚탲뫅3횮뫳쫕떽쇋탲뫅6뗄탅풪쪱,뿉틔죏캪뚪쪧쇋(탲뫅4뫍5)2룶탅풪,튲뿉틔뾴ퟷ솬탸뚪쪧쇋(탲뫅4ꆫ7뫍0ꆫ5)10룶탅풪ꆣ죧뫎뒦샭평뷓쫕짨놸뗄짨볆헟뻶뚨ꆣ뛔뚪쪧뗄탅풪,뫍탅풪퇓쪱뚶뚯뗄쟩뿶쿠춬,튲펦닥죫쫊떱쫽솿뗄퇆SAR?PDU뷸탐탞헽ꆣ뛔컳닥뗄탅풪펦폨엗웺ꆣ(2)CS킭틩맦랶ꋙ랢탅랽훐SNퟖ뛎뗄닙ퟷ:퓚랢쯍랽CS훐짺돉폫SAR?PDU뛔펦뗄탲뫅뫍CSI뇈쳘뒫룸SARퟓ닣ꆣꋚ뷓쫕랽훐SNퟖ뛎뗄닙ퟷ:퓚뷓쫕랽CS훐뷓쫕듓SARퟓ닣뒫살뗄룷SAR?PDU,듓훐좡돶탲뫅횵뫍CSI뇈쳘,뛔PDU뗄뚪쪧뫍컳닥뷸탐킣퇩ꆣ쎿떱듕싺47ퟖ뷚뗄탅쾢(47룶AAL?SDU)뫳,튻늢뒫룸AAL폃뮧ꆣꋛ풴쪱훓욵싊뗄믖뢴:떱랢쯍랽폫뷓쫕랽뗄폃뮧쪱훓폫췸싧쪱훓헽좷춬늽쪱,풴쪱훓욵싊뗄믖뢴늢늻훘튪ꆣ럱퓲뻍펦퓚뷓쫕뛋믖뢴랢쯍랽뗄쪱훓욵싊틔놣돖쫕랢쮫랽뗄춬늽ꆣITU?T붨틩닉폃춬늽쪣폠쪱볤뇪잩(SRTS:SynchronousResidualTimeStamp)램,ꋙ뗧슷럂헦:퓚ATM췸싧훐럂헦뗧슷쒣쪽ꆣꋚSDU(튵컱쫽뻝떥풪)쫇횸짏닣뒫훁놾닣뗄떥캻쫽뻝,뿉틔퓚웤쫗ꆢ캲볓짏춷뇪뫍캲뇪ퟩ돉놾닣뗄PDU(죧AALType3/4뗄CPCS?PDU),튲뿉붫SDU럖닰돉죴룉쫽뻝뛎,퓚룷뛎쫗캲볓짏춷뇪ꆢ캲뇪릹돉놾닣뗄뛠룶PDU(죧SAR?PDU)ꆣꆤ37ꆤ
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횸헫ퟖ뛎몬폐7뇈쳘(룟캻뗚8뇈쳘놸폃),틔뛾뷸훆횸쪾듓횸헫ퟖ뛎뷡쫸떽뷡릹뮯쫽뻝뗚튻룶뇟뷧뗄욫틆,떥캻쫇ퟖ뷚ꆣ욫틆뗄랶캧냼삨놾탅풪SAR?PDU쪣폠뗄46ퟖ뷚뫍쿂룶탅풪(벴SC캪웦쫽뗄탅풪)뗄SAR?PDU뺻뫉뗄47ퟖ뷚,튲뻍쫇쮵뿉퓚0ꆫ92ퟖ뷚훐죎틢좡횵ꆣ뷓쫕랽CS샻폃횸헫탅쾢뻍쓜믖뢴평ATM탅풪돐퓘뗄뷡릹뮯쫽뻝뗄탅쾢ꆣ춼
(AAL?IDU:AALInterfaceDataUnit)뒫쯍튻룶AAL?SDUꆣ튲뻍쫇쮵,퓚쿻쾢쒣쪽쿂AAL?SDU뫍AAL?IDU튻튻뛔펦ꆣ틔쫽뻝횡캪떥캻뗄쿻쾢뒫뗝뻍쫴폚헢훖쿻쾢쒣쪽뗄튵컱ꆣAAL?SDU뗄뎤뛈뿉틔쫇뚨뎤뗄,튲뿉틔쫇뇤뎤뗄ꆣ춨뎣붫튻룶AAL?SDUퟷ캪튻룶SSCS?PDU살뒫쯍(닎퓄춼(a))ꆣ떱AAL?SDU뫜뛌폖만뚨쪱,뿉틔샻폃SSCS쓚뗄쫽뻝ퟩ뿩/럖뿩(blocking/deblocking)릦쓜붫튻룶믲뛠룶AAL?SDUퟩ돉튻룶SSCS?PDU랢쯍돶좥(볻춬춼(b))ꆣ뛔뎤뛈뇤뮯뗄AAL?SDU,뿉틔샻폃SSCS쓚뗄닰/ힰ릦쓜붫튻룶AAL?SDU럖뷢돉튻룶믲뛠룶SSCS?PDU랢쯍(닎퓄춬춼(c))ꆣ떱좻,늻닉폃짏쫶랽램폃튻룶SSCS?PDU뒫쯍튻룶AAL?SDU튲쫇뿉틔뗄ꆣ춼
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뗄춷뇪ꆢퟮ듳뎤뛈캪44ퟖ뷚뗄SAR?SDU(폐킧탅쾢)뫍2ퟖ뷚캲뇪ퟩ돉ꆣ춼쪾돶쇋SAR?PDU뗄룱쪽,쯼뻟폐틔쿂릦쓜:춼
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PDU살럅웺CPCS?PDU뗄뒫쯍ꆣ뗄릦쓜뫍킭틩(1)CPCS릦쓜CPCS?PDU엤훃폐4ퟖ뷚뗄춷뇪뫍4ퟖ뷚뗄캲뇪ꆣ캪쇋쳡릩LAN볤춨탅뗈룟쯙(쫽Mb/s틔짏)뗄럇솬뷓탍튵컱,펦틔뇪ힼ뮯뗄MAN(돇폲췸)킭틩캪ힼ,쪹IEEE/MAN폫B?ISDN쫊엤ꆣꋙ캬돖CPCS?SDU:쳡릩춸쏷뒫쯍CPCS?SDU뗄릦쓜(CPCS?SDU뎤뛈캪1ꆫ65535ퟖ뷚)ꆣꋚ닮듭뿘훆:볬닢늢뒦샭폐듭뗄CPCS?SDUꆣ뛔돶듭뗄CPCS?SDU뿉틔엗웺튲뿉ퟷ캪톡쿮풭럢늻뚯뗘춨횪폃뮧ꆣ붫돶듭뗄CPCS?SDU춨횪폃뮧쪱,펦뇪쪶CPCS?PDU폐듭ꆣꋛ춨횪뷓쫕랽펦럖엤튻뚨뗄뮺듦뿕볤:캪쇋쪹뷓쫕랽헽좷컞컳뗘뷓쫕CPCS?PDU,펦춨횪룃랽뗄쪵쳥럖엤튻뚨뗄뮺듦뿕볤ꆣꋜ훐횹(Abort):쫇횸퓚쇷쪽뒫쫤쒣쪽쿂,훐춾엗웺틑쯍돶뗄쓇늿럖CPCS?PDU뗄릦쓜ꆣꋝ붨솢뛠룶CPCS솬뷓:퓚춬벶CPCS쪵쳥볤뿉붨솢뛠룶CPCS솬뷓ꆣꋞ캬돖CPCS?PDU뗄뒫쯍쮳탲:듓샻폃춬튻룶CPCS솬뷓뗄폃뮧쓇샯뗃떽뗄CPCS?PDU뗄뒫쯍쮳탲놣돖늻뇤ꆣ(2)CPCS킭틩ꋙ릫릲늿럖뇪횾(CPI:CommonPartIdentifier):CPI맦뚨쇋CPCS춷뇪뫍캲뇪뗄릦쓜ꆣ떱CPCS?PDU뺻뫉캪탅쾢쪱,CPI훃돉좫0,웤쯻폃램퓚퇐쳖훐ꆣꋚ웰쪼뇪잩(BTag:BeginningTag)ퟖ뛎뫍뷡쫸뇪잩(ETag:EndTag)ퟖ뛎:랢쯍랽뛔룷룶CPCS?PDU뗄BTag뫍ETag훐짨훃쿠춬뗄쫽횵ꆣ붫CPCS?PDU닰ힰ돉SAR?PDU뫳,퓚뷓쫕랽춨맽킣퇩BTag뫍ETag뗄튻훂탔살업돽컳붫뛠룶CPCS?PDUퟩힰ돉튻룶CPCS?PDU뗄듭컳ꆣ펦떱힢틢,뷓쫕뛋늢늻뛔Tag횵뗄솬탸탔뷸탐킣퇩ꆣꋛ뮺듦쟸럖엤죝솿횸쪾(Bsize:BufferAllocationSize)ퟖ뛎:춨횪뷓쫕랽캪뷓쫕CPCS?PDU쯹탨뗄ퟮ듳뮺듦쟸죝솿ꆣ뷓쫕랽룹뻝Bsize럖엤뮺듦뿕볤ꆣꋜ쳮돤(PAD:Padding)ퟖ뛎:캪쇋뇣폚32캻믺뷸탐뒦샭,튪쟳CPCS?PDU뗄뺻뫉뎤뛈캪32뇈쳘뗄헻쫽놶,틲뛸떼죫쇋PADퟖ뛎ꆣ웤뎤뛈캪0ꆫ3ퟖ뷚ꆣ룃ퟖ뛎늻뒫쯍죎뫎탅쾢맊좫늿훃돉0ꆣꋝ킣ힼ(AL:Alignment)ퟖ뛎:AL쫇캪쇋붫CPCS?PDU캲뇪뗷헻돉32뇈쳘뛸떼죫뗄ꆣ룃ퟖ뷚늻뒫쯍죎뫎탅쾢,맊좫늿훃0ꆣꋞ뎤뛈(Length)ퟖ뛎:횸쪾틔ퟖ뷚캪떥캻뗄CPCS?PDU뗄뺻뫉뎤뛈(늻냼삨PAD)ꆣ듋췢,뮹뿉폃살뛔CPCS?PDU뗄헽좷탔(죧쫇럱랢짺탅풪뚪쪧뫍컳닥)뷸탐킣퇩ꆣ뗄릦쓜뫍PDU룱쪽AALType3킭틩훐듦퓚SSCS,폃살쪵쿖솬뷓탍쫽뻝춨탅훐쳘폐뗄닮듭킣헽뫍쇷뿘뗈릦쓜ꆣITU?T헽퓚뛔웤쾸뷚뷸탐퇐쳖ꆣAALType4킭틩훐SSCS벸뫵늻쳡릩쪲쎴릦쓜,횻늻맽뷸탐풭폯(primitive)뗄펳짤ꆤ44ꆤ
뛸틑ꆣ
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뗄ퟮ뗍캻캪0쪱,뇭쪾럇ퟮ뫳뗄SAR?PDU;캪1쪱,뇭쪾ퟮ뫳뗄SAR?PDUꆣ룃횵뛔PTퟖ뛎뗄펳짤평ATM닣맦랶()맦뚨ꆣ뗄릦쓜뫍킭틩(1)CPCS릦쓜뫍AALType3/4쿠뇈,쯼즾돽쇋뮺듦쟸럖엤죝솿횸쪾(Bsize)ꆢ캬돖CPCSSDU뒫쯍쮳탲뗈릦쓜,퓶볓쇋캬돖CPCS폃뮧?폃뮧볤탅쾢ꆢ쳮돤ꆢ펵죻탅쾢뒦샭뫍뚪쪧폅쿈벶탅쾢뗄뒦샭릦쓜ꆣ쿂쏦뛔AALType5뗄CPCS룷룶릦쓜럖뇰뷸탐쮵쏷(닎퓄춼)ꆣꋙ캬돖CPCS?SDU:쳡릩CPCS?SDU뗄춸쏷뒫쯍릦쓜,웤ퟮ듳뎤뛈캪65535ퟖ뷚ꆣꋚ캬돖CPCS폃뮧?폃뮧탅쾢:춸쏷뒫쯍1룶ퟖ뷚뗄CPCS폃뮧?폃뮧탅쾢ꆣꋛ닮듭뿘훆:볬닢늢뒦샭CPCS?SDU뗄닮듭ꆣ뛔돶듭뗄CPCS?SDU펦떱엗웺,튲뿉ퟷ캪톡쿮붻룸폃뮧뒦샭ꆣ붫돶듭뗄CPCS?SDU춨횪폃뮧쪱,펦뇪쪶쯼폐듭ꆣꋜ훐횹(Abort):퓚쇷쪽뒫쫤쒣쪽쿂,훐춾엗웺틑뺭쯍돶뗄쓇늿럖CPCS?SDUꆣꋝ쳮돤:쪹CPCS?PDU듕돉48ퟖ뷚뗄헻쫽놶ꆣꋞ펵죻탅쾢뒦샭:퓚CPCS짏닣뫍CPCS쿂닣횮볤뒫쯍펵죻탅쾢ꆣꋟ뚪쪧폅쿈벶탅쾢뗄뒦샭:퓚CPCS짏닣뫍CPCS쿂닣횮볤뒫쯍뚪쪧폅쿈벶탅쾢ꆣ(2)CPCS킭틩ꋙCPCS?PDU뺻뫉:폃살뒫쯍1ꆫ65535ퟖ뷚뗄CPCS?SDUꆣꋚ쳮돤(PAD)ퟖ뛎:캪쪹CPCS?PDU듕돉48ퟖ뷚뗄헻쫽놶,퓚CPCS?PDU뺻뫉뫍CPCS?PDU캲뇪볤훃죫0ꆫ47ퟖ뷚뗄쳮돤ퟖ뛎ꆣ쯼늻뒫쯍탅쾢,뿉죎틢뇠싫ꆣꋛCPCS폃뮧?폃뮧탅쾢(CPCSUU)ퟖ뛎:폃폚뒫쯍CPCS폃뮧?폃뮧탅쾢ꆣꋜ릫릲늿럖뇪횾(CPI):캪붫CPCS?PDU캲뇪듕돉64뇈쳘뛸훃죫좫0ꆣ웤쯻폃램캴뚨ꆣꋝ뎤뛈(Length)ퟖ뛎:틔뛾뷸훆쫽뇭쪾CPCS?PDU뺲뫉뗄뎤뛈,떥캻쫇ퟖ뷚ꆣ뷓쫕랽샻폃룃횵볬닢탅쾢뗄뚪쪧뫍컳닥ꆣ떱뒫쯍Abort튵컱쪱,룃ퟖ뛎좫훃돉0ꆣꋞCRCퟖ뛎7:틔짺돉뛠쿮쪽1+x+24x+x+5x+x+8x+10x+1122x+12x+16x+x+23x+26x+32x볆쯣돶32뇈쳘CRC싫훃죫룃ퟖ뛎ꆣ뗄릦쓜뫍킭틩AALType5뗄SSCS평SSCF뫍SSCOP릹돉ꆣITU?T퇘솽룶춾뺶뛔웤뷸탐뾪랢뫍퇐쳖,벴룹뻝룟닣쯹탨쳵볾뛔SSCF뷸탐뇪ힼ뮯뫍룹뻝룟닣쯹탨쳵볾뛔SSCS헻쳥뷸탐뇪ힼ뮯ꆣIETF(InternetEngineeringTaskForce)튲퓚뛔샻폃Type5뗄SARퟓ닣뫍CPCS뗄횡벶뒫쫤릦쓜틔벰ATM뗄룟쯙쫽뻝뒫쯍쓜솦,뷓죫뒫춳훕뛋뗄쫽뻝춨탅랽쪽뷸탐뇪ힼ뮯ꆣ쿂쏦뷩짜벸룶뗤탍뗄펦폃쪵샽ꆣ붫SSCF뫍SSCOPퟩ뫏,릹돉SSCS뗄뗤탍펦폃쫇뒫쯍탅쇮쿻쾢ꆣSSCOP쳡릩쫽뻝춨탅훐춨뎣쯹탨뗄닮듭뿘훆(샻폃훘랢믺훆뷸탐닮듭킣헽)뫍쇷뿘(flowcontrol)뗈릦쓜ꆣSSCF캪쪵쿖룷룶폃뮧뗄쳘쫢탨쟳뛔SSCOP뷸탐솬뷓뿘훆(솬뷓뗄붨솢/쫍럅/퓙춬늽),뗷뷚쫽뻝뒫쯍쯹탨뗄뚨쪱,뇘튪쪱탨뛠듎랢돶솬뷓붨솢쟫쟳(쿪볻놾헂탅쇮킭틩)ꆣFR?SSCS쫇늻폃SSCOP릹돉SSCS뗄쪵샽,폃살쪵쿖ATM폫횡훐볌(FR:FrameRelay)뗄뮥춨ꆣ죧춼쯹쪾,쯼붫뗄횡룱쪽뗄튻늿럖풭럢늻뚯뗘ퟷ캪SSCS?ꆤ47ꆤ
PDU뗄춷뇪,룷ퟖ뛎뗄틢틥폫쿠펦뗄릦쓜튲뫍쿠춬ꆣ틲듋,횡훐볌뗄훕뛋샻폃FR?SSCS쓜뫜랽뇣뗘뫍뷓퓚ATM췸짏뗄훕뛋뮥솬ꆣ춼
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ꋙ튻냣맣능탅쇮VC(VPI=0,VCI=2)ꋚ톡퓱맣능탅쇮VC(VPI=0,VCI=x?)ꋛ뗣뛔뗣탅쇮VC(VPI=0,VCI=y?)춼
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샻폃쇋SSCOP뿉뾿뗄쫽뻝뒫쯍쓜솦,쪵쿖믡뻛릦쓜틔뇣쿲룟닣쳡릩쿠떱폚LAPD뗄튵컱ꆣ쯼훷튪뷸탐SSCOP뫍AAL뗄튵컱풭폯/풭폯닎쫽뗄펳짤ꆣ캪쪵쿖펳짤쯼튪캬돖쓚늿ힴ첬,떫늻탨튪뚨쪱웷벰탲뫅뗈뢴퓓뗄뿘훆믺훆ꆣ퓚SSCOP훐쳡릩UNIꆢNNI뗄탅쇮뫍U쏦뗄솬뷓탍쫽뻝춨탅쯹탨뗄릫릲릦쓜,퓚SSCF훐풭퓲짏횻퓶쳭쇋싺ퟣ룷룶폃뮧쯹탨뗄쳘쫢쳵볾뗄믡뻛릦쓜ꆣ탅쇮폃뗄AAL헻쳥뛔웤짏닣쳡릩폫LAPD듳쳥쿠춬뗄튵컱ꆣ틲듋쓜릻ퟮ듳쿞뛈뗘퇘폃볈폐뗄뫴뷐뿘훆킭틩,헢폐샻폚탅쇮킭틩뗄룟킧싊뾪랢ꆣ쯼폫LAPDퟮ듳뗄늻춬뗣퓚폚웤폃뮧쫽뻝ퟮ듳뎤뛈캪64Kퟖ뷚,솬뷓붨솢/쫍럅쪱쓜릻퓚폃뮧볤뒫쯍쫽뻝ꆣ
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춨탅쯙싊폃떥캻쪱볤뒫쯍뗄탅풪쫽맦뚨ꆣ평폚퓚틬늽뒫쯍랽쪽쿂뒫쯍뗄탅풪쫽쫇늻뛏뇤뮯뗄,죧뛔쇷죫췸싧뗄탅풪쫽솿풤쿈늻볓틔쿞훆,뿉쓜떼훂췸싧펵죻,튲쓑틔맀볆뛔췸싧퓊탭붨솢뛠듳듸뿭뗄솬뷓ꆣ틲듋,펦맦뚨룷룶ATM솬뷓뗄PCR횵ꆣ퓚폃뮧?췸싧뷓뿚짏,PCR뗄뚨틥쫇:PCR쫇펦랢쯍뗄ATM탅풪뗄쪱볤볤룴뗄ퟮ킡횵뗄떹쫽,떥캻쫇탅풪/쏫ꆣ랢쯍ATM탅풪뗄쪱볤볤룴쫇횸퓚랢쯍탅풪뗄폃뮧훕뛋짏탅풪뒫쯍쟫쟳듓ATM닣뒫떽컯샭닣쯹탨쪱볤뗄볤룴(닎퓄춼)ꆣ춼3?38럖컶쇋솬뷓B짏탅풪쪱퇓뇤뮯닺짺뗄풭틲,쪾돶쇋솬뷓B틔럥횵탅풪쯙싊랢쯍뗄탅풪평폚솬뷓A뗄탅뫅뒫쯍쟫쟳ꆢOAM탅풪뫍컯샭닣뾪쿺뗈풭틲떽듯UNI쪱랢짺퇓쪱뗄쟩뿶ꆣ춼
3.럥횵탅풪쯙싊뗄볠뿘쯣램PCR볠뿘쯣램퇏룱맦뚨쇋탅풪쪱퇓뇤뮯폫PCR뗄맘쾵,쪾폚춼뗄솽훖췪좫뗈킧뗄PCR볠뿘쯣램틑돉캪맺볊뇪ힼꆣ춼
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뗚4헂?SDH뷓뿚폫
탅쾢쪱횻탨틔1/60쇐뗄훜웚뛔횡뷸탐뢴폃벴뿉,듓뛸볲뮯쇋뗧슷뗄짨볆ꆣ떱돵Bellcore횻뾼싇쇋
룷듎좺뗄탅쾢훃죫뎤랽탎뗄죝웷훐뒫쫤ꆣ춼
튪쟳틔9탐ꇁ9쇐ퟷ캪뛎뾪쿺ꆣퟛ뫏짏쫶틲쯘,150Mb/s횡뗄쇐쫽캪(261+9),SDH횡뷡릹캪9탐ꇁ270쇐(
샽죧,틔2Mb/s뗄뢴폃탅뗀뷓춨뫏럊뫍짏몣쪱,뻍돆웤캪뫏럊ꆪ짏몣쟸볤뗄2Mb/s쫽ퟖ춨뗀,쯼뺭평죴룉룶쫽ퟖ뛎뒫쯍탅쾢ꆣSOH퓚횡뗄웰쪼늿캻,POH퓲쫇뫍튪뒫쯍뗄뢴폃떥캻뗄쫽ퟖ탅쾢튻웰뒫쯍뗄ꆣ쯼쏇뗄뻟쳥폃램쇴듽뷚닻쫶ꆣ
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퓚킡뷚훐닻쏷쇋붫볈폐뗄쫽ퟖ쾵쇐쯙싊뗄탅쾢훃죫죝웷훐뒫쯍뗄랽램ꆣ퓚SDH훐틔C?11,C?21뗈볇뫅살뇭쪾늻춬죝솿뗄죝웷ꆣC쫇죝웷뗄펢폯싔폯,뗚1룶쫽ퟖ듺뇭탅쾢뗄좺쯙싊(죧1듎좺,2듎좺뗈),뗚2룶쫽ퟖ뇭쪾춬튻좺쓚쯙싊듓뗍떽룟뗄업쇐듎탲(샽죧,죕놾뫍놱쏀뗄1듎좺캪
뗄뇪횾탅쾢ꆣ춼벰춼쪾돶쇋STM?1뗄믹놾횡뷡릹뫍횸헫뗄ퟷ폃ꆣSOH쓚뗄횸헫횸쪾VC?4뗄캻훃믲3룶뢴뷓뗄VC?3뗄캻훃ꆣ춼
죧춼쯹쪾뿉뢴뷓7룶붻듭뗄TUG?2;춬샭,TUG?2뿉뢴뷓TU?11(
뗚5헂?ATM붻뮻믺
떥풪샻폃죭볾뷸탐뫴뷐붨솢폫쫍럅뗄뒦샭ꆣATM붻뮻믺뗄쳘뗣퓚폚쯼뗄쿟슷떥풪뫍붻뮻떥풪,놾뷚훷튪쳖싛쿟슷떥풪,붻뮻떥풪쇴듽쿂뷚닻쫶ꆣ춼
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풪,쯍떽돶쿟짏ꆣ뮺듦웷뗄죝솿평쿟슷샻폃싊ꆢ탅풪떽듯럖늼ꆢ탅풪뚪쪧싊뫍붻뮻맦쒣좷뚨ꆣ춼(a)쪾돶쇋떱쿟슷샻폃싊캪,탅풪쯦믺떽듯쪱쯹탨뗄뮺듦죝솿ꆣ뛔쒳튻쫤돶뛋뿚살쮵,퓚춬튻쪱뿌떽듯룃뛋뿚뗄ퟮ듳탅풪쫽캪M(붻뮻돟듧),틲붻뮻돟듧풽듳,떽듯쪱뗄럖늼튲풽듳,맊쯹탨뗄뮺듦웷쫽쒿쯦붻뮻돟듧퓶듳뛸퓶듳ꆣ떱붻뮻뷡릹듳떽쒳튻돌뛈쪱,붻뮻돟듧뛔뮺듦웷쫽쒿뗄펰쿬뇤뗃뫜킡ꆣ춼(b)쪾돶쇋쿟슷샻폃싊뫍쯹탨뮺듦웷쫽쒿뗄맘쾵,쿟슷샻폃싊풽룟,쯹탨뮺춼
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뗄붻뮻뷡릹ꆣ뻘헳뮺듦랽쪽ꆢ쫤죫뮺듦랽쪽쫇쫊뫏폚뷸/돶쿟슷퓚룟쯙쿂릤ퟷ뗄붻뮻뷡릹ꆣ
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붫쫤돶뮺듦웷뒦폚ꆰ쎦(busy)ꆱ뗄ힴ첬탅뫅춨횪룸쯹폐뗄쫤죫뮺듦웷ꆣ룷쫤죫뮺듦웷쫕떽busy탅뫅뫳,뻍붫탅춷훐볇폐busyힴ첬뗄쫤돶뮺듦웷뗄뗘횷뗄탅풪듓뛓쇐훐쳞돽,횻랢쯍볇폐쓜릻헽뎣쫕탅뗄쫤돶뮺듦웷뗄뗘횷뗄탅풪ꆣ튻떩뮺듦웷훐뗄뿕탅풪쫽쒿뎬돶쏅쿞횵,뻍솢벴춨횪쯹폐뗄쫤죫뮺듦웷뗄뿘훆뗧슷뷢돽Busyힴ첬,쪹쳞돽뗄탅풪략믘뛓쇐ꆣ죧짏쯹쫶,퓚쫤죫뛋엤훃쇋듳죝솿뗄뮺듦웷,늢떼죫믘톹믺훆뫳좡뗃쇋틔쿂킧맻:ꋙ쫊펦춻랢탔뗄튵컱솿틲퓚룷룶쫤죫뛋뿚엤훃쇋컼쫕춻랢탔튵컱솿뗄듳죝솿뗄뗍쯙뮺듦웷,뛔럥횵쯙싊뫜룟ꆢ춻랢죝쿞(닎퓄7?11?2킡뷚)뫜듳뗄튵컱솿튲쓜뫜뫃뗄쫊펦ꆣ듋췢,평폚닉폃뗍쯙춨폃듦뒢웷ퟷ캪쫤죫뮺듦웷틗폚삩햹뮺듦죝솿ꆣꋚ틗폚쪵쿖ퟩ능튵컱붫쫤죫탅풪춬쪱쿲쯹폐뗄쫤돶뮺듦웷훐뢴훆,벴뿉쪵쿖ퟩ능ꆣ(2)탅풪붻뮻떥풪훐뗄폅쿈뿘훆MUX뗧슷룹뻝돶쿟탅쾢ꆢ탅풪쪱퇓폫뚪쪧폅쿈벶붫살ퟔ솽쳵뒫쫤쿟슷뗄탅풪럖뇰킴죫내돶쿟샠탍뫍탅풪쪱퇓폅쿈벶(뛾벶)샠탍뮮럖뗄쫤죫뮺듦웷(뫏볆2048룶탅풪뗄릲폃뮺듦)훐ꆣ쯹캽돶쿟탅쾢쫇횸쾵춳쓚늿뷸탐붻뮻뒦샭쯹탨뗄탅쾢,쯼뫍탅풪튻웰놻쯍죫쾵춳ꆣATOMSW뗧슷쳡릩쇋쿠떱폚2쳵쿟슷뢴폃쯹탨뗄300Mb/s뗄쯙싊,쒿뗄쫇캪쇋쯵뛌붻뮻떥풪쓚뗄쪱퇓ꆣ쯼뛔내돶쿟샠탍쟸럖뗄룷쫤돶뮺듦웷훐듦뒢뗄탅풪쫽쒿뷸탐볠뿘,횻튪튻뎬돶쏅쿞횵뻍뛔MUX뗧슷쪩볓믘톹(backpressure),쪹웤춣횹쿲뎬돶쏅쿞횵뗄돶쿟랢쯍탅풪ꆣMUX틔듋캪ힼ좷뚨펦듓쫤죫뮺듦웷뛁돶뗄탅풪ꆣ뿉틔내탅풪쪱퇓뗄폅쿈벶짨훃쏅쿞횵,죧뎬돶쇋뗚1쏅쿞횵,뻍횻춣횹랢쯍쪱퇓폅쿈벶뗍뗄탅풪ꆣATOMSW뗧슷룹뻝톰슷탅쾢붫탅풪럖뇰킴죫내돶쿟샠탍뮮럖뗄룷뮺듦웷훐,붻쳦쿲솽쳵돶쿟랢쯍탅풪ꆣ퓚쫜떽쿟슷뗄믘톹웚볤,퓝춣쿲룃쳵쿟슷랢쯍탅풪ꆣDMX뗧슷뗄ퟷ폃쫇럖샫쯍췹솽쳵쿟슷뗄탅풪ꆣ샻폃헢훖뷡릹뷸탐폅쿈뿘훆,쳡룟쇋뛔춻랢탔튵컱솿뗄쓍솦ꆣ튲뻍쫇쮵,붫룟폅쿈벶뢳폨뒫쯍뮰틴ꆢ춼쿱뗈CBR튵컱뗄솬뷓;붫뗍폅쿈벶뢳폨뒫쯍럖ퟩ뗈VBR튵컱뗄솬뷓ꆣ헢퇹튻살,벴쪹퓚쳘뚨쿟슷짏뗄VBR튵컱솿쪮럖벯훐튲늻믡뛔춬튻쳵쿟슷짏뒫쯍뗄뮰틴ꆢ춼쿱뗈CBR튵컱솿뗄쪱퇓폐첫듳뗄펰쿬ꆣ4?뿘훆떥풪뿘훆떥풪죧춼쯹쪾,닉폃32뇈쳘MIPS쾵쇐뗄RISC?CPU,캪뷱뫳뗄죭볾삩햹쳡릩쇋ퟣ릻뗄뒦샭쓜솦ꆣ훷튪뗧슷닉폃뻟폐VMEퟜ쿟뗄춨폃뾨쪵쿖뗄,틔샻폚펲볾짽벶ꆣ캪쇋듦럅뿘훆돌탲뫍솬뷓탅쾢,닉폃쇋뿬직듦뒢웷(FlashMemory),뾪웴뗧풴뫳늻뷶쓜솢벴쳡릩튵컱,늢쟒뮹뿉룄뇤퓚쿟ힴ첬쿂뗄뿘훆탅쾢ꆣ쯼뮹엤폐틔첫췸뷓뿚뫍RS?232C뷓뿚,캪죭볾뾪랢뫍쾵춳맜샭쳡릩쇋랽뇣ꆣ
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짨놸랢짺뇤뮯쪱,뿉폃캬뮤맜샭훕뛋(MAT:MaintenanceandAdministrationTerminal)뗄쏼쇮믲NMS뗄SET쏼쇮살짨훃엤훃(configuration)탅쾢ꆣ헢킩엤훃쫽뻝뿉샻폃MAT뗄쏼쇮듦죫뿬직듦뒢웷,뢴캻뫳헢킩탅쾢놻ퟔ뚯떼죫ꆣ짨놸맜샭쒣뿩룹뻝룦뺯쒣뿩뗄놨룦볠닢짨놸뗄릤ퟷힴ첬,샻폃MAT뗄쏼쇮믲NMS뗄GET쏼쇮뛁돶쫽뻝ꆣ3.솬뷓맜샭쒣뿩(PVC맜샭쒣뿩)PVC맜샭쒣뿩룹뻝뫍훕뛋짨놸믲붻뮻믺볤붨솢PVC솬뷓뗄쟫쟳,럖엤풴늢붨솢솬뷓ꆣ뿉틔내뒫쫤쿟슷살톡좡ATM솬뷓쯹탨뗄VPI뫍VCI횵,뫏볆캪12뇈쳘,벴쎿쳵쿟슷뿉횧돖뛠듯4096쳵춨슷ꆣ풤쿈붫PVC폃뗄VPI/VCI뫍SVC폃뗄VPI/VCI럖뾪,틔쏢솽헟퓚쪹폃쪱랢짺돥춻ꆣ솬뷓뗄췘웋샠탍폐1뛔1(뗣뛔뗣)솬뷓뫍1뛔N(뗣뛔뛠뗣)솬뷓솽훖ꆣ퓚붨솢솬뷓쪱,PVC맜샭쒣뿩튪쟳훕뛋횸뚨튵컱솿샠탍뫍췌췂솿,틔뷸탐듸뿭맜샭ꆣ솬뷓뗄붨솢/쫍럅ꆢퟩ능쪱뛋뗣뗄ힷ볓뻹평MAT뗄쏼쇮믲NMS뗄GET쏼쇮살췪돉ꆣ샻폃뿬직듦뒢웷맜샭쒣뿩쳡릩뗄듦뒢릦쓜뿉틔듦뒢ꆢ볇틤틑붨솢뗄PVC,폚쫇떱뢴캻믲웴뚯뗧풴쪱PVCퟔ뚯붨솢ꆣ4.뫴뷐뿘훆쒣뿩(SVC뿘훆쒣뿩)SVC뿘훆쒣뿩뒦샭훕뛋짨놸폫붻뮻믺볤붻뮻뗄탅쇮쿻쾢,틔쳡릩솬뷓쯹탨뗄풴ꆣ쯼횧돖쾵쇐1,,ITU?TSG13DT/11/3?(SSCOP)뗄탅쇮킭틩;횧돖RFC1483(IPoverATM)뗄쫊엤닣킭틩,SARퟓ닣닉폃AAL5ꆣSVC슷평뇭뗇슼폐뛔랽10ퟖ뷚뗄ATM뗘횷뗄튻늿럖믲좫늿,틔벰랢쯍쿟슷뇠뫅,헢킩쓚죝쫇쯦쪱뿉ힷ볓/즾돽뗄ꆣSVC뿘훆쒣뿩룹뻝MAT뗄쏼쇮닩헒듋슷평뇭살뒦샭탅쇮쿻쾢ꆣ퓚랢쯍뫴뷐쪱,붫SETUP쿻쾢훐뗄놻뷐폃뮧뫅싫(CalledPartyNumber)뫍듋슷평뇭훐뗄ATM뗘횷뷸탐뇈뷏,죧맻쿠럻뻍룹뻝룃뇭훐볇퓘뗄쫤돶쿟슷뫍랢탅랽뗄쿟슷짏뗄풴ힴ뿶좷뚨쫇럱뷓쓉듋뫴뷐ꆣ죧쓜뷓쓉,뻍쿲뛔랽랢쯍SETUP쿻쾢ꆣꆤ83ꆤ
뗚6헂?뒫춳LAN춨췹ATM-LAN뗄뗀슷
쿲삩햹ꆣ듓틔훷믺캪훐탄뗄뒹횱탍탅쾢뒫쯍떽LAN볤쮮욽탍탅쾢뒫쯍,췸싧뗄뷚뗣퓶볓쇋,떫뒫춳뗄럖ퟩ붻뮻랽쪽퓚펦듰쪱볤짏쿞훆쇋췸싧뗄뒫쫤쯙싊,탎돉뒫쫤욿뺱ꆣ죋쏇웈쟐튪쟳쪵쿖LAN뗄룟쯙뮯,쪹뗃100Mb/s뗄맢쿋럖늼쪽쫽뻝뷓뿚(FDDI:FiberDistributedDataInterface)ퟷ캪훷룉췸(backbone)퓚LAN훐뗃떽맣랺뗄펦폃ꆣ맢춨탅뗄쪵쿖쪹뒫쫤쎽쳥듓춭쿟훰늽쿲맢샂맽뛉,뾪췘쇋뗍돉놾듳죝솿뗄뒫쫤춨뗀ꆣ웳튵뗄믮뚯틑늻뷶쿞폚퓚튻룶맺볒쓚,뷼쓪살,탭뛠듳웳튵뗄짺닺뗣뫍쿺쫛뗣뇩늼쫀뷧룷룶뗘쟸,룷췸뗣횮볤뿧풽맺뺳뗄룟쯙탅쾢뒫쯍폫붻뮻틑돉캪웳튵뗄춷뗈듳쫂ꆣ듋췢,웳튵뗄LAN짏뗄훕뛋뮹뿉춨맽릫폃췸뷸죫웤쯻웳튵뗄LAN,럃컊쓇샯뗄쫽뻝뿢,벴쯹캽뿧풽뛠룶췸싧뗄탅쾢붻뮻튵컱튲죕틦퓶뛠ꆣ평듋뿉볻,췸싧듓만뚨뗄ꆢ쫜쿞뗄LAN쿲좫쟲뮯췸싧랢햹ꆣATM?LAN틲웤훕뛋쯙싊뿉듯쎿쏫쫽냙헗뇈쳘,췸싧쯙싊뿉듯쫽잧헗뇈쳘뗄췌췂솿뛸틽죋힢쒿,폫맣폲췸뗄컞러(seamless)솬뷓쫇쯼뗄쇭튻룶쳘헷ꆣ훁뷱캪횹,틔첫췸ꆢFDDI뗈릲쿭뒫쫤쎽쳥뗄LAN폫횡훐볌믲ISDN뗈WAN쫇솽훖늻춬뗄췸싧,뛸ATM쫇횧돖21쫀볍뗄뿭듸ISDN뗄벼쫵,샻폃B?ISDN뿉쪵쿖LAN폫WAN뗄컞러솬뷓ꆣ뎤웚틔살,뷸늽ퟮ뿬뗄쫇냫떼쳥벼쫵ꆣ쪮뛠쓪볤DRAM듓16잧뇈쳘쳡룟떽16헗뇈쳘,퓶뎤쇋1000놶;캢뒦샭웷듓짏짽떽200MIPS,쳡룟쇋풼600놶ꆣRISC뒦샭웷뗄돶쿖쪹뒦샭쓜솦쿲룼룟뗄탔쓜싵뷸ꆣ퓚춨탅벼쫵랽쏦,맢뒫쯍벼쫵(FOTS)뗄돶쿖쪹췸싧뗄뒫쯍쯙싊듓쎿쏫쫽헗뇈쳘쳡룟떽쎿쏫쫽잧헗뇈쳘ꆣ떥캻뫍웳튵쓚뗄LAN뗄뒫쫤쯙싊튲듓쎿쏫쫽헗뇈쳘쳡룟떽쫽냙헗뇈쳘ꆣ평폚탅쾢뒦샭짨놸뇈춨탅짨놸룼뛠뗘쫜믝폚냫떼쳥벼쫵뗄룼탂,틲듋,뛔뒹횱탍췸싧살쮵,탅쾢뒦샭짨놸횮볤뗄탅쾢뒫쯍늢늻탨튪쓇쎴룟뗄쯙뛈,떫뛔쮮욽탍췸싧살쮵,헢훖룟쯙뒫쫤쯙싊쫊펦쇋탅쾢뒦샭쯙뛈뗄듳뇤룯,ATM?LAN뻍쫇ퟮ폐킧뗄뷢뻶냬램ꆣ
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볓룟쯙,룼볓맣랺ꆱꆣ퓚놱쏀,뛔ATM?LAN,100Mb/s틔첫췸,16Mb/s뗈쪱틔첫췸(Iso?Ethernet:IsochronousEthernet)틔벰볌FDDI횮뫳뗄뎬룟쯙맢쿋췸(FFOL:FDDIFollowOnLAN)뗈탂탍LAN뗄뇪ힼ뮯헽퓚볓쯙뷸탐훐ꆣ춼틔춨탅쯙싊캪믹ힼ쪾돶쇋룷훖LAN쯹뒦뗄캻훃ꆣ헢킩LAN뗄쳘뗣쫇:1.닉폃쪩릤럑폃뗍솮,캬뮤볲떥뗄럇웁뇎쮫뷊쿟(UTP)뗧샂;2.퓚탅쾢뒦샭쾵춳캢탍뮯뗄춬쪱,LAN뗄탔쓜룟쯙뿭듸뮯;3.떼죫뛠쎽쳥튵컱ꆣ룹뻝헢킩쳘뗣,룷훖LAN횮볤퓚벼쫵짏뻟폐춼쯹쪾뗄맘쾵ꆣ
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랢짺맊헏쪱믡쪹솴슷릤ퟷ훐뛏,캪뇜쏢헢훖쟩뿶펦닉좡맊헏뛔닟(죧뮷략:loopback,엔슷:bypass)ꆣ2.뢴폃랽쪽뢴폃랽쪽뿉럖캪틔믹듸뒫쫤랽쪽캪믹뒡뗄춬늽쾵춳믲틬늽쾵춳뗄쪱럖뢴폃랽쪽뫍틔뿭듸뒫쫤랽쪽캪믹뒡뗄욵럖뢴폃랽쪽ꆣ욵럖뢴폃랽쪽틔CATV벼쫵캪믹뒡,맽좥틔춬훡뗧샂캪훷,뷼쓪살쯦ퟅ맢뒫쫤벼쫵뗄돉쫬,틑웕뇩닉폃맢샂살쪵쿖ꆣ3.럃컊뿘훆랽쪽뛠룶햾뗣릲쿭춬튻뒫쫤쎽쳥쪱,펦뿘훆뛔쎽쳥뗄럃컊,틔뇜쏢뛠룶햾뗣춬쪱쿲쎽쳥랢쯍탅뫅(믲쫇뛔춬쪱쯍돶탅뫅뗄돥춻뷸탐뿘훆)ꆣCSMA/CD(ퟜ쿟탍ꆢ탇탍)랽쪽ꆢ쇮없(ퟜ쿟탍ꆢ뮷탍)랽쪽뫍쪱쾶(뮷ힴ)랽쪽뚼쫇뗤탍뗄럖늼탍럖ퟩ붻뮻랽쪽ꆣ춼(a)ꆫ(c)쪾돶쇋룷훖뿘훆랽쪽뗄풭샭ꆣ퓚춼훐뛔헢벸훖럃컊뿘훆랽쪽뗄췌췂솿(throughput)뷸탐쇋뇈뷏ꆣ춼
뇭
Connect)쫇탇탍췘웋뷡릹뗄뫋탄,룷룶릤ퟷ쟸훐엤훃뗧탅맱(TC:TelecommunicationClosets)늢맦뚨쇋TC폫훕뛋횮볤뗄쮮욽늼쿟쾵춳(HorizontalWiringSystem)뫍TC횮볤뗄훷룉늼쿟쾵춳(BackBoneWiringSystem)ꆣ쮮욽늼쿟쾵춳뗄뗧샂뎤뛈캪90m(295ft),훷룉늼쿟쾵춳뗄뗧샂뎤뛈틲뗧샂뛸틬ꆣ뇪ힼ늼쿟쾵춳퓊탭닉폃틔쿂4훖뗧샂ퟷ캪뒫쫤쎽쳥:(1)4뛔100ꚸ?럇웁뇎쮫뷊쿟(UTP:UnshieldedTwistedPair);(2)2뛔150ꚸ?웁뇎쮫뷊쿟(STP:ShieldedTwistedPair);(3)50ꚸ?춬훡뗧샂;(4)
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캪쇋쪵쿖쪵쪱튵컱,폐맘ퟩ횯헽퓚퇐쳖뛠쎽쳥뒫쫤킭틩(MTP),쯼폫쿖폐뗄TCP/IP,IPX뗈킭틩릲춬릹돉쫂쪵뗄뇪ힼ,낲ힰ퓚쫓욵럾컱쾵춳짏ꆣ
램ꆣ뷚뗣퓚뒫쯍쫽뻝쪱,쿈볠쳽탅뗀,죧맻탅뗀뿕쿐,퓲랢쯍쫽뻝,럱퓲퓲뗈듽횱훁탅뗀뿕쿐퓙랢쫽뻝ꆣ퓚랢쯍쫽뻝뗄춬쪱뮹뷸탐돥춻볬닢,튻떩랢짺돥춻,솢뿌춣횹랢쯍,뗈떽돥춻욽쾢뫳퓙훘뢴틔짏늽훨,횱떽쫽뻝랢쯍돉릦ꆣ100BASE?X뗄뒫쯍쎽쳥캪UTP?3믲UTP?5,췸싧뷡릹폫10BASE?T쿠춬ꆣ퓚뇭훐뛔100BASE?VGAnyLAN뫍100BASE?X뗄럃컊랽쪽ꆢ뒫쫤듺싫ꆢ뒫쫤쎽쳥뫍뷡릹뷸탐쇋뇈뷏ꆣDemand?Priority뗄럃컊랽쪽뇈CSMA/CD뢴퓓,떫쯼퓚춨탅훊솿뫍뛔뛠쎽쳥춨탅뗄횧돖랽쏦폅폚뫳헟,틲뛸쫊폃랶캧룼맣ꆣ뇭
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쳥캪훕뛋쯹릲쿭,틲듋,헢훖샠탍뗄AU뿉틔폃훕뛋볤뗄ퟜ쿟훙닃(arbitration)뷸탐럃컊뿘훆ꆣ뮺듦훕뛋탍AU샻폃쇋뮺듦웷폫훕뛋볤뗄쇷뿘(flowcontrol)릦쓜,뷶떱AU쓚뗄뷓쫕뮺듦웷뿕쿐쪱닅ힼ탭훕뛋랢쯍쫽뻝ꆣ틲듋쓜릻뇜쏢틲뮺듦웷틧돶떼훂럖ퟩ뚪쪧ꆣ쯤좻IEEE802LLC(싟벭솴슷뿘훆ퟓ닣)튲뻟폐쇷뿘릦쓜,떫틲룃릦쓜쫇뚨틥퓚훕뛋?훕뛋볤뗄,폫훕뛋?AU볤맦뚨뗄럃컊뿘훆릦쓜늢늻훘뢴ꆣ죧맻퓚AU쓚쓜릻럀횹럖ퟩ뚪쪧,쓇쎴,늻틀삵룟닣킭틩뻍쓜쪵쿖룟훊솿뗄뛋?뛋춨탅ꆣ복쟡룟닣킭틩뗄뒦샭뢺떣뛔춼쿱춨탅쓇훖쪵쪱ꆢ듳쫽뻝솿뗄탅쾢뒫쫤튵컱살쮵쫇훁맘훘튪뗄ꆣ춼
횤,틲듋퓚뒫쫤뮰틴ꆢ춼쿱뗈뗈쪱탔튵컱쪱뾼싇닉폃뗧슷붻뮻탅뗀ꆣ헢훖맛뗣폫FDDI?II뗄룅쓮쿠춬ꆣ웤쪵6Mb/s뗄뗈쪱탅뗀폫뫳쏦튪뷩짜뗄FDDI?II뗄뿭듸탅뗀(WBC:WideBandChannel)쿠춬ꆣ쯹틔Iso?Ethernet뿉틔뾴돉쫇FDDI?II뗄뷓죫췸ꆣ
100Mb/s,훷룉췸짏릹돉FDDI?I,횧쿟췸짏쫇10Mb/s뗄틔첫췸,ퟮ듳뷚뗣쫽500룶ꆣ쯼늻떫뻟폐룟쯙탔,뮹뻟폐맣폲뗄쳘뗣,쿟슷ퟜ뎤뿉듯100kmꆣ춼쪾돶쇋FDDI뗄췸싧뷡릹ꆣ쏀맺뗄ANSI1982쓪뾪쪼뛔웤뷸탐뇪ힼ뮯,1991쓪ISO/IECJTC1SC25튲뛔웤뷸탐쇋뇪ힼ뮯ퟷ튵ꆣퟮ뷼ퟷ캪뒫쫤쎽쳥살쮵,돽쇋맢쿋횮췢,쪹폃쮫뷊쿟뗄쟷쿲죕틦퓶잿,ퟔ1990쓪웰ANSI뛔웤뾪쪼뇪ힼ뮯ퟷ튵ꆣ헢훖럖늼탍쫽뻝뷓뿚놻돆ퟷTPDDI믲CDDI(TwistedPair믲CopperDDI)ꆣ뷱뫳쯼붫ퟷ캪횱뷓솬뷓릤ퟷ햾뗄룟쯙LAN뛸틽죋힢쒿ꆣ춼
뇪쪱볤(TTRT:TargetTRT)쪱(돆ퟷ퓧떽쇮없:earlytoken)뿉에뚨캴랢짺펵죻ꆣ햾뗣쓜릻볌탸쿲뮷짏랢쯍럖ퟩ횱떽쇮없톲믘쪱볤뎬맽쒿뇪쪱볤캪횹ꆣ떱TRT동폚쒿뇪쪱볤쪱(돆캪동떽쇮없:latetoken),뮷짏횻쓜뒫쯍폅쿈벶뷏룟뗄춬늽럖ퟩꆣꋝ캪쇋럀횹쇮없뚪쪧,룷햾뗣튪볠닢쇮없톲믘쪱볤,떱쇮없훐뛏뎬맽쇋맦뚨쪱볤,뻍솬탸늻뛏뗘랢쯍쇮없쟫쟳횡ꆣ쇮없쟫쟳횡뮷죆튻훜략믘놾햾쪱,뻍뛔웤쯻햾뗣뷸탐돵쪼뮯늢퓙짺뚪쪧뗄쇮없ꆣ떱뛠룶햾뗣춬쪱랢쯍쟫쟳횡랢짺뺺헹쪱,퓲룹뻝쟫쟳횡훐폅쿈벶좷뚨폅쿈벶ퟮ룟뗄햾뗣뷸탐맜샭ꆣ쇮없뿘훆죧춼쯹쪾,뿉럖캪떥쇮없랽쪽뫍뛠쇮없랽쪽ꆣ죧틔짏늽훨ꋚ뫍ꋛ쯹쫶,FDDI틲췸싧뗄듳맦쒣뮯뫍룟탔쓜뮯뛸닉폃뛠쇮없랽쪽ꆣꋙ쇮없평룷햾뗣훐볌랢,퇘뮷뗄튻룶랽쿲?믘ꆣꋚ폐랢쯍튪쟳뗄햾뗣A늶믱쇮없,뗃떽뛔뮷?뗄럃컊좨,좻뫳쿲쒿뗄햾뗣C랢쯍횡ꆣ햾뗣C붫쫕떽뗄횡뾽놴퓚놾햾뗄뮺듦웷짏ꆣꋛ햾뗣A퓚즾돽틑죆뮷튻훜뗄횡쪱,춨맽쿲?뮷짏쯍돶쇮없붻돶럃컊뿘훆좨ꆣꋛꇤ햾뗣A랢쯍횡뫳솢벴쯍돶쇮없ꆣ떱쯍돶뗄?횡죆뮷튻훜믘떽놾햾쪱뻍즾돽룃횡ꆣ춼
(4)쾵춳맜샭캪쇋좷놣ퟷ캪훷룉LAN뗄뿉뾿탔,FDDI퓚쾵춳맜샭랽쏦쿂쇋뫜듳릦럲ꆣꋙ쮫뮷뷡릹FDDI죧춼쯹쪾돊쮫뮷뷡릹ꆣ튻듎뮷뫍뛾듎뮷짏뗄쫽뻝쇷쿲쿠랴ꆣ춨뎣뛾듎뮷ퟷ캪튻듎뮷뗄놸럝뒦폚듽쏼ힴ첬ꆣ튻떩튻듎뮷뗄맢샂믲햾뗣랢짺맊헏,웤솽닠뗄햾뗣볬닢떽횮뫳솢벴쟐뮻떽뛾듎뮷,ퟔ쫊펦뗘엔슷맊헏늿캻,탎돉탂뮷볌탸뒫쯍쫽뻝ꆣ헢훖릦쓜돆캪뮷략(loopback)릦쓜ꆣ캪쇋폘믘맊헏믲뗧풴맘뗴뗄뷚뗣,엤훃쇋닉폃맢엔슷뾪맘뗄믺릹,돆ퟷ엔슷릦쓜ꆣ햾뗣짏맦뚨쇋쮫뮷뗄A벶(쮫볓뷓햾:dualattachmentnode)뫍떥뮷볲떥뗄B벶(떥볓뷓햾:singleattachmentnode)ꆣ샻폃엤쿟벯훐웷(wiringconcentrator)짨놸뷸탐뇤뮻,튻떩B벶짏랢짺맊헏뻍폃A벶엔슷ꆣ춼
쮵쯼쫇쫊폃폚뛠쎽쳥춨탅뗄LANꆣ(2)럃컊뿘훆랽쪽FDDI?II뻟폐솽훖릤ퟷ쒣쪽,벴횻쓜쪵쿖럖ퟩ붻뮻릦쓜뗄믹놾쒣쪽(basicmode)뫍춬쪱뻟폐뗧슷붻뮻릦쓜뗄믬뫏쒣쪽(hybridmode)ꆣFDDI?I뫍FDDI?II횮볤뗄뮥뮻탔횻듦퓚폚믹놾쒣쪽훐ꆣFDDI?II뗄돵쪼ힴ첬틔믹놾쒣쪽릤ퟷꆣ룷햾뗣퓚FDDI?I릦쓜쒣탍뗄컯샭닣짏쳭볓쇋믬뫏뮷슷뿘훆HRC(HybridRingControl),틔뷸탐럖ퟩ붻뮻뫍뗧슷붻뮻뗄ퟛ뫏뿘훆ꆣ퓚FDDI?II훐뾼싇떽뗧슷붻뮻릦쓜틔벰폫WAN뗄솬뷓,틔PCM뇠싫뗄뗧뮰뮰틴뗄닉퇹훜웚(8kHz)캪믹뒡,웤뒫쫤횡뗄훜웚캪125ꛌs,뎤뛈캪3125룶럻뫅(symbol)(2룶럻뫅캪1ퟖ뷚)ꆣ햾뗣럖캪늻뻟폐맜샭릦쓜뗄맦퓲햾뫍뻟폐맜샭릦쓜뗄톭뮷훷햾(cyclemasternode)솽샠,평쯼쏇릹돉뮷췸ꆣ춬쪱횧돖럖ퟩ붻뮻릦쓜뫍뗧슷붻뮻릦쓜뗄믬뫏쒣쪽,튪쟳뮷짏훁짙폐튻룶톭뮷훷햾ꆣ떱뮷짏듦퓚뛠룶톭뮷훷햾쪱,캪쪹웤훐튻룶뒦폚벤믮ힴ첬,탫퓚돵쪼뮯쪱춨맽쿠뮥킭뗷살좷뚨ꆣ톭뮷훷햾캪놣횤뗧슷붻뮻탅뗀짏뗄쫽뻝뗄뗈쪱탔,펦붫죆뮷튻훜뗄톲믘쪱볤뗷헻캪훜웚뗄헻쫽놶,틲듋펦엤훃뻟폐떯탔듦뒢릦쓜뗄쪱퇓뮺듦웷ꆣ(3)횡뷡릹폫닙ퟷ춼쪾돶쇋훜웚탔뗄횡뷡릹ꆣ훜웚평캪믱좡횡춬늽뗄잰떼싫(PA:Preamble)ꆢ훜웚춷뇪(CH:CycleHeader)ꆢ폃럖ퟩ쫽뻝ퟩ(DPG:DedicatedPacketDataGroup)뫍뿭듸탅뗀(WBC:WideBandChannel),믲놻돆캪훜웚ퟩ(CG:CyclicGroup)뗄탅쾢뒫쯍폲릹돉ꆣ춼
룸뗧슷붻뮻뗄쟩뿶쿂튲쓜폃럖ퟩ붻뮻뷸탐솬뷓붨솢/쫍럅뗄닙ퟷꆣ훜웚ퟩ릹돉16룶뿭듸탅뗀ꆣ룷뿭듸탅뗀뿉틔럖뇰횸뚨캪럖ퟩ붻뮻쒣쪽믲뗧슷붻뮻쒣쪽,퓚96룶훜웚ퟩ짏틔ퟖ뷚캪떥캻붻듭엤훃ꆣ춼내뒫쫤쮳탲햹쪾쇋훜웚ퟩ뫍뿭듸탅뗀뗄맘쾵ꆣퟷ캪럖ퟩ붻뮻폲럖엤뗄뿭듸탅뗀폫DPG튻웰,퓚럖ퟩ붻뮻폃뗄쎽쳥럃컊뿘훆(P?MAC)짏뿉뾴ퟷ쫇튻룶솬탸뗄폲,뷸탐폫FDDI?쿠춬뗄럃컊뿘훆ꆣ떱튻룶훜웚ힰ늻쿂튻룶랢쯍뗄럖ퟩ쪱,뻍샻폃쿂튻톭뮷훜웚뗄럖ퟩ붻뮻폲ꆣ뛔뗧슷붻뮻폃뗄쎽쳥럃컊뿘훆(I?MAC)퓲뿉춨맽믬뫏뢴폃릦쓜(H?MUX)쳡릩뻟폐뗧슷붻뮻폲뗄뗈쪱탔탅쾢ꆣ듋쪱뿭듸탅뗀쓜릻춨맽뇈쳘뗄톡퓱뮮럖ퟓ탅뗀,쳡릩8kb/sꆫ2048kb/s뗄뗧슷붻뮻튵컱ꆣ춼
(3)훷룉췸훷튪폃폚솬뷓LAN뫍PBX,쫊폃랶캧캪횱뺶50kmퟳ폒뗄쟸폲;(4)뻟폐ퟛ뫏춬늽뒫쯍쒣쪽(STM)탅뗀뫍틬늽뒫쫤쒣쪽(ATM)탅뗀뗄릦쓜,틲뛸볈쓜쳡릩ISDN튵컱,폖쓜쳡릩B?ISDN튵컱;(5)쓜쳡릩뒫춳뻖폲췸뗄럇솬뷓탍튵컱ꆣ(6)닉폃릫폃췸뗄뒫쫤뷓뿚SONET(춬늽맢쿋췸)믲3듎좺뷓뿚(DS3)ퟷ캪컯샭닣ꆣ2.룟쯙쫽뻝튵컱캪쇋쪵쿖쫽뻝춨탅뗄룟쯙뮯,늻뷶튪쟳뒫쫤쾵춳뗄뿭듸뮯,볲뮯붻뮻뒦샭뫍톰슷뿘훆튲쫇럇뎣훘튪뗄ꆣ뒫춳뗄럖ퟩ붻뮻냑룷룶뷚뗣ퟷ캪췸싧닣뗄뛋뗣뷸탐뢴퓓뗄킭틩뒦샭,럁낭쇋춨탅뗄룟쯙뮯ꆣ틲듋,퓚MAN훐붫췸쓚톰슷뗈뫴뷐붨솢릦쓜폫폃뮧볤뗄쫽뻝뒫쯍릦쓜럖샫,뛸쟒붫쫽뻝뒫쯍훐뗄뻀듭뿘훆ꆢ쇷솿뿘훆뗈솴슷뿘훆붻룸폃뮧볤킭틩뒦샭,췸쓚뿘훆횻쿞폚닉폃만뚨뎤쪱쾶(slot)캪떥캻뗄춷뇪뷢컶ꆣ헢퇹튻살,뻍뿉붫훁뷱캪횹평죭볾쪵쿖뗄붻뮻뒦샭췪좫평펲볾살쪵쿖ꆣMAN컼좡쇋ATM뗄쿈뷸쮼쿫,쪵쿖틔쪱쾶캪떥캻뗄춷뇪쟽뚯탍뗄룟쯙쫽뻝뒫쯍튵컱ꆣ(DistributedQueueDualBus)쫇퓚돇쫐랶캧쓚쳡릩룟쯙뛠쎽쳥춨탅튵컱뗄췸싧,쯼춨맽췸쟅ꆢ슷평웷폫LAN뮥솬릹돉MAN(볻춼)ꆣ춼
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첬,좻뫳퓙쯍돶쪱쾶뇭쪾풤풼췪뇏ꆣ춼
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1.벼쫵튪쟳튪쟳FFOL싺ퟣ틔쿂쳵볾:(1)쓜릻ퟷ캪FDDI뗄훷룉췸쪹폃;(2)틗폚뫍B?ISDN횮샠뗄WAN뮥춨;(3)쓜릻쳡릩쫽뻝ꆢ춼탎ꆢ뚯춼쿱벰뮰틴뗈ퟛ뫏춨탅튵컱;(4)쫽뻝뒫쫤쯙싊퓚
튲뿉랢햹돉뮷탍뗄CRMAII뗄LANꆣ헢샯뷶뛔CRMA뗄럃컊랽쪽ퟷ튻룅삨뷩짜ꆣ1.펦폃쇬폲뫍벼쫵튪쟳쫊폃폚춼쿱벰쫓욵펦폃,죧뗧쫓믡틩ꆢCAD/CAMꆢ튽쇆헯뛏ꆢ맣룦폫펡쮢훐뗄춼탎/춼쿱붻뮥뗄쿔쪾뒦샭ꆢ쫓욵볠뿘;룟췌췂솿뗄솬뷓샽죧LAN/PBX뗄훷룉췸ꆢSONET벰솬뷓B?ISDN뗄럖늼쪽췸싧ꆢ컄볾듦뒢쾵춳벰듳맦쒣뗄럖늼뒦샭뮷뺳뗈뗄듳솿쫽뻝뒫쯍;뛌쪱퇓뗄솬뷓(샽죧,럖늼뮷뺳훐뢴뫏뿆톧벼쫵볆쯣뗄뎬벶볆쯣ꆢ럖늼쪽닙ퟷ쾵춳뫍RPC(RemoteProcedureCall)쫽뻝뿢쾵춳)뗈ꆣ웤벼쫵튪쟳죧쿂:(1)뒫쫤췸뗄뷡릹:뫍쿖폐늼쿟탎쪽(TokenRing,FDDI,DQDB뗈)욥엤;(2)룟탔쓜ꆢ룟킧싊;(3)MAC킭틩:럃컊뗄릫헽탔ꆢ퓚뗍뢺뫉쿂뗄룟쯙럃컊ꆢ뛔붻뮻듳솿탅쾢뗄쳘뚨믽벫(active)폃뮧쓜쳡릩돤럖뗄듸뿭;(4)뿉뾿탔폫컈붡탔(robustness):붨솢쮫쿲뗣떽뗣솴슷,좷놣탔쓜욽뮬뗘복췋(맊헏쪱폫gigabit췸싧솬뷓뗄쎿룶췸싧뚼쓜뛀솢뗘볌탸릤ퟷ),뿬쯙뗘볬닢돶늢믖뢴킭틩뗄닮듭;(5)맦쒣뗄쇩믮탔:횧돖SONET쯙싊(OC?12,OC?48);(6)뒫쫤튵컱:횧돖틬늽뒫쫤뫍춬늽뒫쫤;(7)솬뷓뻠샫:200km틔짏ꆣ2.럃컊뿘훆평폚쓜릻풤풼50ꆫ100룶ퟖ뷚뗄뎬뛌럖ퟩ(쪱쾶)뗄솬탸탲쇐,볲뮯쇋룟쯙탔(
쫤쿟슷뻠샫뗄룟췌췂솿ꆣDQDB횻랢쯍튻룶slot럝뛮뗄풤풼쫽쇐,뛸CRMA뿉풤풼뛠룶slot,놣횤쇋뷚뗣캻훃뗄릫헽탔ꆣ춼
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뒫쯍,ATMR뛔룷햾뗣뷸탐볠뿘ꆣ(2)훊솿뗈벶뗄뿘훆ATMR캪쇋뛔늻춬훊솿뗈벶뗄춨탅튵컱뷸탐폅쿈벶뿘훆,맦뚨쇋좫햾뗣춨폃뗄춨탅뗈벶ꆣ샻폃춨탅뗈벶ힴ첬뗄틆,뿉잿훆훐뛏뗍폅쿈벶뗄탅쾢뒫쯍,쿈뒫쯍폅쿈벶룟뗄탅쾢ꆣ튲뻍쫇쮵,뛔룷룶펦폃쎽쳥뗄탅풪내웤쪱퇓뫍췌췂솿뗈튵컱벶뇰럖엤춨탅훊솿뗈벶,샻폃룷훊솿뗈벶뛔펦뗄뒰뿚뷸탐뿘훆ꆣ떱죎뫎튻룶햾뗣랢쿖ퟔ벺퓚맦뚨훊솿뗄뛓쇐훐뗈듽랢쯍뗄탅풪뗄쪱퇓훊솿뗃늻떽싺ퟣ쪱,뻍쿲럃컊뿘훆ퟖ뛎(ACF)훐킴죫ꆰ훐뛏뢴캻ꆱ,늢붫ퟔ벺뗄춨탅뗈벶틆떽뷏룟벶뇰,훐뛏뇈ퟔ벺벶뇰뗍뗄탅풪뒫쯍,폅쿈랢쯍룟뗈벶뗄탅풪ꆣ틔뫳춨맽뢴캻럖뷗뛎믖뢴떽풭춨탅뗈벶ꆣ(3)뷓쫕햾뗄쫍럅뿘훆쪱쾶쓚뗄탅쾢퓚뷓쫕햾뗣쫍럅,벴퓚뷓쫕햾뗣짏쪹쪱쾶돉캪뿕탅풪ꆣ헢쫇춨맽뛀솢뗘뛔럃컊뿘훆ퟖ뛎(ACF)ꆢ쪱쾶뗄뗘횷탅쾢뫍볇폐뮷슷햼/뿕뗄뮷슷VC뇪횾럻(RVCI)뗄ퟖ뛎뷸탐뿘훆살쪵쿖뗄ꆣ평폚퓚뷓쫕햾쫍럅쪱쾶,쪹웤퓚튻훜쓚뗄믘돌훐뿉틔퓙듎놻쪹폃,듓뛸쏷쿔뗘쳡룟쇋뮷슷뗄쪵볊췌췂솿(뛔쮫뮷뷡릹춬쪱뷸탐럃컊,뿉쳡룟4놶틔짏)ꆣATMR랽쪽폚1991쓪평죕놾쳡낸,ISO/IEC,JTC1SL6뛔웤뷸탐뇪ힼ뮯ꆣ
2.ퟷ캪훷룉LAN(1)맢쿋뒫쫤맢쿋뿉럖캪뛠쒣맢쿋뫍떥쒣맢쿋ꆣ잰헟뗄맦랶폫FDDI훐쿠춬,맦뚨쇋100Mb/s뫍155Mb/s뷓뿚ꆣ떥쒣맢쿋쓜릻틔620Mb/s믲Gb/s벶뗄뎬룟쯙싊뒫쫤ꆣ평폚늻쓜쳦듺,럳짨탂뗄훷룉췸맢샂쪱ퟮ뫃닉폃떥쒣맢쿋ꆣ(2)훷룉췸붻뮻훷룉췸튻냣닉폃쿱FDDI헢훖뗤탍뗄뮷탍췸,떫쯼늻쫊뫏룟쯙뮯ꆣ뮷탍췸싧훐쯹폐햾뗣뗄뒫쫤쯙싊뇘탫폫췸싧ퟜ죝솿튻훂,쇷솿짙뗄햾뗣튲뇘탫폫쇷솿뛠뗄햾뗣튻퇹뷸탐룟쯙뒫쯍,헢쫇뫜늻뺭볃뗄ꆣ샻폃ATM붻뮻뿉틔뛔듸뿭늻ퟣ뗄햾뗣퓶볓뷓뿚쫽,벴뛔뷓뿚뷸탐룟쯙뮯ꆣ뻖늿뗄듸뿭늻ퟣ늻펰쿬좫쳥ꆣ폖평폚쯼쫇뗣떽뗣탍뗄컯샭솬뷓,늻펰쿬웤쯻폃뮧ퟩ뗄튵컱솿,죝틗뷸탐낲좫맜샭,튲삩돤쇋훷룉췸뗄릦쓜ꆣꆤ115ꆤ
뗚7헂?
뒫춳LAN릲쿭뒫쫤쎽쳥,떱죫췸뗄훕뛋퓶볓쪱,뛋떽뛋뗄춨탅죝솿뫜쓑뗃떽놣횤,폖틲뒫춳LAN훐닉폃뗄쫇럇솬뷓탍뗄뒫쫤킭틩,맊늻쓜놣횤뮰틴ꆢ춼쿱뗈쪵쪱탔솬탸탅쾢쯹탨뗄듸뿭ꆣATM?LAN뻟폐탇탎뗄췸싧췘웋뷡릹,뛋떽뛋볤횻튪늻뎬맽컯샭쿟슷뗄뒫쫤죝솿,뻍뿉믱뗃쯹탨뗄듸뿭ꆣ틲ATM?LAN닉폃솬뷓탍뗄춨탅킭틩,캪뛋떽뛋뗄뒫쫤훊솿쳡릩쇋뿉뾿뗄놣횤ꆣ2.쾵춳삩돤뗄쇩믮탔퓚뒫춳LAN짏퓶볓훕뛋삩햹췸싧쪱,탨튪샻폃췸쟅뗈짨놸붫웤럖룮돉죴룉룶췸뛎ꆣ헢쪱폐뿉쓜돶쿖뒫쫤욿뺱ꆣATM?LAN뻟폐탇탎췘웋뷡릹,틲듋늻믡돶쿖샠쯆컊쳢ꆣ3.뿉뾿탔룟뒫춳LAN닉폃맣능랽쪽뒫쯍탅쾢,튻떩췸싧맊헏,붫늨벰헻룶췸뛎ꆣATM?LAN닉폃붻뮻랽쪽,뛋뿚뗄맊헏뷶펰쿬룶뇰폃뮧ꆣ4.쪵쿖B?ISDN폫ATM?LAN뗄컞러솬뷓뒫춳LAN뫍맣폲췸솬뷓쪱,틲쯼쏇닉폃뗄춨탅킭틩늻춬,퓚뛾헟뗄솬뷓뗣짏탨샻폃췸맘뷸탐킭틩뇤뮻ꆣ킭틩뮻춨뎣틔죭볾살쪵쿖,웄럑쪱볤,틲듋퓚솬뷓뗣짏뿉쓜돶쿖뒫쫤욿뺱ꆣB?ISDN뫍ATM?LAN뚼닉폃쇋맺볊뇪ힼ뮯뗄탅쇮(),틲듋퓚뿧풽헢솽훖췸뗄뛋?뛋볤뿉쳡릩컞러뗄ATM솬뷓,듓뛸놣횤쇋춨탅쯹탨뗄룟쯙듸뿭뫍튵컱훊솿ꆣ쯹캽컞러솬뷓쫇횸떱LAN뫍WAN뗈뛠룶췸싧뮥솬쪱,쪹죋쏇달뻵늻떽췸볤뗄뻠샫ꆢ쎽쳥뗄늻춬뫍룷ퟓ췸킭틩뗄닮틬,늢쓜뛔췸싧뷸탐ퟛ뫏뗄퓋폃뫍맜샭ꆣ
쪾뗄럖닣뷡릹ꆣ쯼뫍뗚3헂훐닻쫶뗄B?ISDN킭틩믹놾쿠춬ꆣ랢쯍랽뿉틔룹뻝폃뮧탅쾢뗄쳘탔톡폃쿠펦뗄AAL튵컱샠탍,늢퓚AAL붫폃뮧탅쾢럖룮돉48ퟖ뷚뗄탅풪뺻뫉붻룸ATM닣ꆣATM닣뗄ퟷ폃쫇틔뛠쳵춨슷뗄ATM탅풪뛔1쳵컯샭솴슷뷸탐뢴폃,늢폃VCI/VPI살쪶뇰룷룶춨슷ꆣ컯샭닣뿉틔내뒫쫤쎽쳥ꆢ뒫쯍랽쪽폫뒫쫤뻠샫틔벰뒫쫤쯙싊ퟷ뛠훖듮엤,틔뇣ퟩ췸쪱톡폃ꆣ춼
퓚ATM뒫쫤뿘훆닣훐펦엤훃헢훖릦쓜ꆣATM뗄췸맜릦쓜냼삨ATM췸싧뗄뷡릹맜샭ꆢ맊헏맜샭ꆢ탔쓜맜샭ꆢ짨놸맜샭뫍뗘횷붨솢뗈맜샭릦쓜ꆣ
SNMP뫍MIB짏ꆣ
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1989쓪듯돉48ퟖ뷚뗄췗킭랽낸ꆣ듓볆쯣믺춨탅뗄맛뗣살뾴,죧맻탅풪뎤뛈뇤뮻돉뎬룟쯙뮺듦웷(cache)돟듧,웤뒫쫤킧싊믡뫜룟ꆣ쪮럖탒퓋,48ퟖ뷚헽쫇8ퟖ뷚뗄헻쫽놶ꆣ퓚ATM?LAN훐샻폃AALType5킭틩,탅풪뺻뫉훐쎻폐폃폚웤쯻뾪쿺뗄춷,튲뻍쫇쮵,뺻뫉훐뗄48룶ퟖ뷚좫늿폃살뒫쯍쫽뻝,쳡룟쇋뒫쫤킧싊ꆣ
짦벰VC붨솢/쫍럅뗄닙ퟷ,틲듋늻탨튪내VC뇪쪶뗄탅풪뇤뮻뇭ꆣ쯤좻릫폃췸횻쳡릩VP솬뷓뗄튵컱,떫VP솽뛋뗄붻뮻믺짏죧엤훃쇋ATM탅쇮,뻍쓜퓚뚫뺩ꆢ듳?뫍얦풼럖릫쮾뗄붻뮻믺볤ퟔ평뗘붨솢SVCꆣ평듋뿉볻,VP쓜릻퓚춬ퟩ볤쳡릩싟벭뗄횱춨솴슷,쯼돽쇋뿉틔복쟡훐볌붻뮻뒦샭뢺뫉횮췢,뮹웰쇋싟벭짏럖룮췸싧뗄ퟷ폃ꆣ퓚ATM?LAN쓚,붫훕뛋벯훐돉릤ퟷퟩ,뻍릹돉쇋싟벭췸ꆣ쒿잰,탩춨뗀횻횧돖만뚨솬뷓,죧쓜샻폃탅쇮붨솢VP,뻍쓜ퟔ평뗘릹돉룷룶싟벭췸ꆣ
틑퓚킡뷚훐쮵쏷ꆣAALퟮ훕탅풪뇈쳘놻폃살횸쏷떱SDU샠탍=1쪱,룃탅풪쫇AALType5뗄ퟮ훕탅풪ꆣ룃뇈쳘퓚AALType5틔췢믹놾늻폃(쿪볻뷚)ꆣOAM탅풪폃살뛔룷쳵솴슷뷸탐킣퇩뫍뛔뛋?뛋뗄킣퇩ꆣ뇭쇐돶쇋뺻뫉샠탍룷뇈쳘뗄틢틥ꆣ뇭
뇭
뇭
쓚죝돶듭쪱뷸탐훘랢ꆣ붫AAL5,SSCOP뫍SSCF(튵컱쳘뚨킭뗷릦쓜)뫏퓚튻웰,돆ퟷ탅쇮AAL(SAAL:SignallingAAL)ꆣ춼
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ퟮ뫳뗄SEL늻폃폚톰슷,뛸폃살쪶뇰훕뛋(뛋뗣쾵춳)뗄룟닣킭틩믲튵컱ꆣ춨뎣붫DSP뗄DFI훁AREA뗄헢튻늿럖돆ퟷ룟캻DSP(HO?DSP:HigherOrderDSP),폃쯼살뛔췸싧럖닣,틔볲뮯톰슷ꆣ(4)뗘횷뗄ퟔ뚯짨훃릦쓜ATM싛첳뮹맦뚨쇋훕뛋뷓죫췸싧쪱ퟔ뚯뛔룃훕뛋럖엤뗘횷뗄믺훆ꆣ틲듋컰탨닙ퟷ풱뗄룉풤,췸싧뫍웤쯻훕뛋뻍쓜믱횪룃훕뛋뗄뗘횷ꆣ헢쫇ퟷ캪ퟔ싉럖늼쾵춳뗄LAN뻟폐뗄믹놾릦쓜ꆣ춼쪾돶쇋뗘횷뗇슼뗄믺훆ꆣ췸싧닠맜샭횱훁AREAퟖ뛎,훕뛋닠퓲캨튻좷뚨ESIꆣ헢뻍틢캶ퟅ뿉틔쪹폃놻캨튻럖엤룸훕뛋쫊엤웷짏뗄MAC뗘횷ꆣ춼
뇭훐쇐돶쇋ATM?LAN죽훖탎쪽ꆣ뇭
틲듋,틔탅쇮맦돌횸뚨뛔랽훕뛋쪱,튪춬쪱샻폃헢솽훖UNI뗘횷ꆣ춼
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늢폃CONNET(솬뷓)쿻쾢춨횪랢탅폃뮧훕뛋틑붨솢쇋솬뷓ꆣ퓚뛋?뛋볤뿉쪹폃냼삨룟닣뗘횷뗄룟닣킭틩탅쾢ꆣ솬뷓뗄쫍럅쫇평폃뮧랢쯍RELEASE(쫍럅)쿻쾢뾪쪼뗄ꆣ좻뫳붻뮻뷚뗣쫍럅횱떽쒿뗄훕뛋뗄춨뗀짏뗄풴,늢쿲랢탅폃뮧훕뛋믘쯍RELEASECOMPLETE(쫍럅췪돉)쿻쾢ꆣ퓚룃맦돌훐돽쇋맦뚨뗣뛔뗣솬뷓붨솢뗄쿻쾢췢,뮹맦뚨쇋붨솢/쫍럅솬뷓쪱뫍뷸탐ힴ첬맜샭쪱쪹폃뗄뿘훆쿻쾢틔벰훘웴뚯쪱쪹폃뗄뿘훆쿻쾢뗈솬뷓뿘훆쿻쾢(닎퓄뇭)ꆣ뇭
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뚯춼쿱,룷훕뛋볤펦럖뇰붨솢뗣뛔뛠뗣솬뷓ꆣ떫쫇럾컱웷랽쪽췪좫횧돖춨맽ATM췸싧쪵쿖IPퟩ능튵컱ꆣ닉폃뗣뛔뛠뗣솬뷓믹놾짏쓜릻싺ퟣퟩ능튵컱뛔솬뷓뗄탨쟳,틲듋,ATM싛첳뛔붨솢뗣뛔뛠뗣솬뷓뗄탅쇮ퟷ돶맦뚨ꆣ춼쪾돶쇋뗣뛔뛠뗣솬뷓뗄붨솢맦돌ꆣ쫗쿈튪붨솢뗣뛔뗣뗄솬뷓ꆣ틲듋,뗚1늽펦샻폃SETUP?A쿻쾢붨솢듓룹뷚뗣(ROOT)떽훕뛋A뗄떥쿲솬뷓ꆣ뗚2늽쫇쪹훕뛋B볓죫ퟩ능쫷(multi?tree),캪듋듓ROOT쿲훕뛋B랢쯍ADDPARTY?B(폃뮧볓죫)쿻쾢ꆣ듓뗚2룶붻뮻뷚뗣웰잰쿲쫇탂뗄솬뷓,맊샻폃쇋SETUP?B쿻쾢ꆣ듋뫳,평ROOT랢쯍ADDPARTY?Cꆣ평듋뿉횪,뗣뛔뛠뗣솬뷓뗄붨솢쫇춨맽듓ퟩ능뗄룹뷚뗣쿲쫷탍뷡릹뗄튶뷚뗣(leaf)랢쯍솬뷓뿘훆쿻쾢쪵쿖뗄ꆣퟩ능솬뷓뗄쫍럅뿉폃DROPPARTY(폃뮧췑샫)쿻쾢쪵쿖ꆣ춼
튶뷚뗣펦횪뗀볓죫떽ퟩ능ퟩ훐뗄룷돉풱뗄ATM뗘횷ꆣퟩ능뗘횷맜샭럾컱웷맜샭IPퟩ능ퟩ뗄돉풱,쯼붫웤ATM뗘횷탅쾢춨횪룸룷룶돉풱ꆣ튶뷚뗣쿲ROOT랢쯍볓죫쟫쟳,ROOT쫕떽듋쟫쟳뫳붨솢뗣뛔뛠뗣솬뷓ꆣ솬뷓붨솢죧춼쯹쪾,췪좫평ROOT쪵쪩ꆣퟜ횮,닉폃헢훖랽낸뫳,뻍쓜퓚뗣뛔뛠뗣뗄ATM솬뷓짏쪵쿖뒫춳LAN훐뗄ퟩ능튵컱ꆣATM?LAN쓜릻놣횤ퟩ능솬뷓듸뿭뗈춨탅훊솿,헢뛔뛠쎽쳥펦폃뻟폐뫜듳뗄솦ꆣ
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믺폫붻뮻믺뗄룷룶뛋뿚짏춼뛔7뗈.27?뗘횷뗇슼뫍PNNI톰슷(PeertoPeer)춨탅뗄킭틩,뿉틔붫UME(UNIManagementEntity:UNI맜샭쪵쳥)횱뷓볓퓘떽SNMP/AAL5/ATM뫍ATM췸싧짏ꆣ퓚ATM닣훐UNI쪹폃VPI=0,VCI=16뗄좱쪡횵ꆣ뗘횷뗇슼맦돌쪾폚춼ꆣ춼
춨맽짏쫶닙ퟷ,훕뛋뿉믱좡ATM뗘횷뗄췸싧잰ힺ,붻뮻뷚뗣뿉볬닢떽뷓퓚룷뛋뿚짏뗄훕뛋뗄ATM뗘횷ꆣ틲듋,뿉붨솢춼쯹쪾뗄뗘횷뇭ꆣ떱훕뛋룄뷓떽웤쯻뛋뿚쪱,퓚틆뫳뗄뛋뿚짏ퟔ뚯뷸탐뗘횷뗇슼,늻탨튪닙ퟷ풱뗄룉풤ꆣ짏쫶닙ퟷ퓚붻뮻믺뗄룷룶UNI뛋뿚짏뛀솢뗘뷸탐,붻뮻뷚뗣볤쎻폐탅쾢붻뮻ꆣ뫴뷐붨솢쫇횸듓쒿뗄훕뛋뗄ATM뗘횷훐뗄NetworkPrefix늿럖톰헒쒿뗄붻뮻믺(폫쒿뗄훕뛋횱솬뗄붻뮻믺),좻뫳샻폃붻뮻믺볤뗄PNNI톰슷킭틩뷸탐횱떽쒿뗄붻뮻믺뗄톰슷,ퟮ뫳평쒿뗄붻뮻믺샻폃뛋뿚ATM뗘횷뇭(룃뇭쫂쿈평뗘횷뗇슼맦돌짺돉)뷸탐좷뚨뷓죫쓄룶뛋뿚뗄튻쾵쇐뗄닙ퟷꆣ쿂쏦뷩짜벸훖PNNI톰슷랽쪽ꆣ
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벶훐볌톰슷랽쪽,헢훖랽쪽뗄쳘뗣쫇쫊뫏듦퓚뛠룶뛀솢뗄췸싧쟸폲뗄쟩뿶ꆣ룷룶쟸폲뿉톡폃웤쳘뚨뗄톰슷랽쪽,틲듋쯼쫊폃폚듳맦쒣뗄췸싧ꆣ춼쪾돶쇋훰벶훐볌톰슷뗄쪵샽ꆣ캪쇋붨솢평훕뛋떽훕뛋뗄솬뷓,폃SETUP쿻쾢럖ퟩ톰슷ꆣ쫗쿈,붻뮻믺X1듓SETUP쿻쾢뗄쒿뗄뗘횷뗃횪쒿뗄붻뮻믺쫇Y3,늢에쏷Y?헢샠붻뮻믺퓚붻뮻믺X3랽쿲짏,좻뫳쿲붻뮻믺X3랢쯍SETUP럖ퟩꆣ붻뮻믺X3뷸탐쿠춬뗄닙ퟷ:에쏷붻뮻믺Y?퓚Y1랽쿲짏횮뫳,쿲Y1랢SETUP럖ퟩꆣ붻뮻믺Y1틲폫Y3횱솬,맊횱뷓쿲Y3랢SETUP럖ퟩꆣퟮ뫳,평붻뮻믺Y3쿲뷓폐쒿뗄훕뛋뗄뛋뿚뒫쯍SETUP쿻쾢럖ퟩꆣ붻뮻믺X1,X3샻폃룟캻뗘횷잰ힺY?톰슷,듓뛸볲뮯쇋슷평뇭ꆣ헢훖랽쪽뗄폅뗣쫇룷룶붻뮻믺쓜릻뛀솢뗘뷸탐톰슷뿘훆ꆣ틲캪횻폃췸싧잰ힺ(NetworkPrefix)살뇠훆슷평뇭,쯹틔벴쪹췸싧뗄맦쒣뫜듳,웤톰슷뒦샭뾪쿺튲늻믡뇤뗃뫜듳ꆣ춼
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룷춬벶ퟩ쓚뗄춬벶뷚뗣볤뷸탐뗄ꆣ춬벶ퟩ훷뷚뗣뫍쿠쇚춬벶ퟩ뗄훷뷚뗣뷸탐쿻쾢뗄붻뮻ꆣ룷붻뮻뷚뗣춨맽헢훖닙ퟷ뿉틔헆컕폫쿠쇚뷚뗣뗄솬뷓맘쾵ꆣ듋췢,샻폃뚨웚붻뮻뗄Hello럖ퟩ뮹뿉볬닢돶솴슷첱뮾/웴뚯(Down/UP)ힴ첬ꆣPNNI솴슷ힴ첬룼탂(PLSU:PNNILSU)킭틩쳡릩쇋쪹붻뮻뷚뗣볤쿠뮥붻뮻놾뷚뗣폫쿠쇚붻뮻뷚뗣뗄솬뷓맘쾵틔벰솴슷풴쪹폃ힴ뿶뗈탅쾢뗄릦쓜ꆣ뿉틔폃돆ퟷ틧돶(Flooding)뗄랽쪽붫PLSU뒫쯍뗄룷쳵솴슷뗄ힴ첬춨횪춬튻춬벶ퟩ쓚뗄룷붻뮻뷚뗣ꆣ튲뻍쫇쮵,죧맻듓쿠쇚뗄붻뮻뷚뗣쫕떽뗄탅쾢폫놾짭뻟폐뗄탅쾢늻춬,뻍솢벴쿲웤쯻쿠쇚뗄붻뮻뷚뗣뒫쯍헢튻쿻쾢;죧맻쿠춬뻍엗웺쯼ꆣ평폚붻뮻뷚뗣헆컕쇋룷쿠쇚붻뮻뷚뗣뗄솬뷓맘쾵뫍솴슷풴쪹폃ힴ뿶,틲듋,쓜릻뷸튻늽듓웤쯻붻뮻뷚뗣믱좡췸싧헻쳥뗄췘웋탅쾢ꆣ퓚춬벶ퟩ쓚뗄붻뮻뷚뗣볤붻뮻뗄뷶쫇쪶뇰춬벶ퟩ쓚뗄췘웋탅쾢,퓚춬벶ퟩ훷뷚뗣볤퓲횻뷸탐룼룟벶뗄춬벶ퟩ뗄췘웋탅쾢뗄붻춼
랶캧짨훃쿞훆,럱퓲퓚듳맦쒣뗄ATM?LAN짏뗄쯹폐훕뛋뚼믡쫕떽맣능쫽뻝ꆣ4.쫕ꆢ랢쯍듸뿭뗄샻폃탎쪽퓚틔첫췸훐폃튻쳵ퟜ쿟쫕랢쫽뻝,벴쫕ꆢ랢탅릲쿭듸뿭,뛸ATM췸싧틔ATM붻뮻믺캪훐탄릹돉탇탎췘웋,쯼캪쫕ꆢ랢탅훕뛋쳡릩좷뚨뗄듸뿭,뷸탐뗣뛔뗣뗄춨탅ꆣ떱좻튲쓜샻폃릲쿭듸뿭랽쪽뷸탐춨탅ꆣ
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붨솢ATM솬뷓쪱쪹폃뗄탅쇮닎쫽ꆣ듋췢,뮹뛔퓚ATM?LAN훐죧뫎쪵쿖ퟩ능(multicast)틔벰ꆰꆱ뗈뷸탐쇋퇐쳖ꆣRFC1626맦뚨틔ATMAAL5랢쯍IP럖ퟩ쪱뗄ퟮ듳럖ퟩ뎤뗄좱쪡횵캪9180ퟖ뷚ꆣ춨탅랽쪽룅쫶캪쇋뇣폚샭뷢,쿂쏦샠뇈틔첫췸짏뗄TCP/IP춨탅뗄맽돌살쮵쏷ATM?LAN짏뗄TCP/IP춨탅맦돌ꆣ쫗쿈믘맋틔첫췸짏뗄솽룶훕뛋랢쯍/뷓쫕IP럖ퟩ뗄튪뗣ꆣ(1)볙뚨랢쯍랽틑횪뛔랽훕뛋뗄IP뗘횷,샻폃ARP릦쓜믱좡웤쿂닣뗄컯샭뗘횷(MAC뗘횷)ꆣ(2)캪듋랢쯍맣능럖ퟩ(ARPRequest)ꆣ(3)틔첫췸닉폃럇솬뷓랽쪽,튲뻍쫇쮵,랢쯍IP럖ퟩ쪱늻붨솢솬뷓,퓚틔첫횡춷쓚훃죫뛔랽MAC뗘횷뫳솢벴랢쯍돶좥ꆣ헫뛔짏쫶죽뗣,뾼달ATM?LAN죧뫎뒫쯍IP럖ퟩꆣ(1)ATM훐뗄컯샭뗘횷늻쫇MAC뗘횷,뛸쫇ATM뗘횷ꆣ틲듋탨튪뻟놸듓쒿뗄훕뛋뗄IP뗘횷믱좡ATM뗘횷뗄릦쓜ꆣ컒쏇붫헢훖릦쓜돆ퟷATMARP(ATM뗘횷뮻킭틩)ꆣ(2)퓚틔첫췸훐샻폃맣능럖ퟩ쪵쿖ARP(뗘횷뮻)릦쓜,뛸퓚ATM?LAN훐믹놾늻쓜뷸탐맣능ꆣ틲듋퓚IPoverATM랽쪽훐엤훃쇋ARP럾컱웷ꆣ룷룶ATM훕뛋캪쇋믱좡쒿뗄훕뛋뗄ATM뗘횷,탨쿲ATMARP럾컱웷뷸탐닩톯ꆣ(3)퓚틔첫췸훐튻떩믱뗃쒿뗄훕뛋뗄MAC뗘횷,벴뿉붫틔첫횡랢쯍돶좥ꆣ평폚ATM?LAN닉폃솬뷓탍춨탅랽쪽,퓚랢쯍쫽뻝횮잰뇘탫붨솢ATM솬뷓ꆣ뮻뻤뮰쮵,퓚ATM?LAN짏뷸탐TCP/IP춨탅탨뺭맽샻폃ATMARP럾컱웷믱좡뛔랽ATM뗘횷,샻폃ATM뗘횷폫쒿뗄훕뛋붨솢ATM솬뷓,퓚듋솬뷓짏뒫쯍IP럖ퟩ헢죽룶맽돌(닎퓄춼)ꆣ춼
IP럖ퟩ뗄맦돌ꆣ춼
(4)훕뛋A샻폃탅쇮맦돌ꋙ뫍ARP럾컱웷붨솢쇋ATM솬뷓ꆣ(5)훕뛋A쿲ARP럾컱웷랢쯍ꆰATMARPRequestꆱ럖ퟩ뷸탐닩톯(헢뻍쫇늽훨(4)훐횸돶뗄폫ARP럾컱웷붨솢ATM솬뷓뗄풭틲),헢튻늽쫇믱좡훕뛋B뗄ATM뗘횷뗄맘볼ꆣ(6)훕뛋A샻폃믱좡뗄훕뛋B뗄ATM뗘횷뫍탅쇮맦돌,폫훕뛋B횮볤붨솢ATM솬뷓ꆣ(7)훕뛋A뫍훕뛋B퓚붨솢뗄ATM솬뷓짏랢쯍/뷓쫕IP럖ퟩꆣ(8)퓚ATM솬뷓짏쎻폐IP럖ퟩ뒫쯍쪱,뺭맽튻뛎쪱볤뫳ATM솬뷓놻쫍럅ꋚꆣ뫍틔첫췸뗄ARP샠쯆,훕뛋B뗄ATM뗘횷퓚훕뛋A뗄룟쯙뮺듦(cache)훐놣돖20럖훓ꆣ퓚듋쪱볤쓚,벴쪹훕뛋A뫍훕뛋B볤뗄솬뷓틲뚨쪱웷뗄뎬쪱뛸놻쫍럅튲쓜쪡뗴ATMARP뗄닙ퟷ,퓚훕뛋A뫍B볤훘붨ATM솬뷓ꆣ춼ퟳ닠뗄쇷돌춼쪾돶쇋뿉쪡싔뗄닙ퟷꆣ
짏ꆣ펦떱횸돶,뷚훐쯹쮵뗄ILMI뗘횷뗇슼(AddressRegistration)뫍헢샯닻쏷뗄뗘횷뮻(ATMAddressResolution)킭틩뗄ퟷ폃쫇늻춬뗄ꆣ죧춼쯹쪾,ILMI뗘횷뗇슼쫇ATM훕뛋쿲붻뮻믺뗇슼웤ATM뗘횷,헢뻍쿱탂ힰ뗧뮰쪱퓚웤횱솬뗄뗧뮰붻뮻믺짏뗇슼뗧뮰뫅싫튻퇹ꆣ퓚ATM?LAN훐,헢훖뗇슼닙ퟷ평ILMIퟔ뚯췪돉,늻탨튪훰룶쿲뗧탅릫쮾짪놨ꆣ웤뒦샭맽돌쫇,훕뛋붫ퟔ벺뗄MAC뗘횷춨횪붻뮻믺,붻뮻믺퓲붫ATM뗄룟닣뗘횷(NetworkPrefix)춨횪룸ATM훕뛋ꆣ뮻뻤뮰쮵,ILMI쫇ATM훕뛋뫍ATM붻뮻믺볤뗄뻖늿탔뗄뗘횷뗇슼닙ퟷꆣ듋쪱,죧맻횪뗀쇋룃훕뛋뗄ATM뗘횷,뻍쓜붨솢떽룃훕뛋뗄솬뷓ꆣ춼
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싧닣톰슷킭틩죭볾,헢뻍튪쟳ATM붻뮻믺뛠킭틩뮯(IP,SNA,AppleTalk,IPX,DECnet뗈)ꆣ
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펦떱힢틢,퓚ATM췸쟅뗄쟩뿶쿂,MAC뗘횷쫇뷓퓚뒫춳LAN짏뗄뒫춳훕뛋뗄뗘횷,쯼춨맽ATM췸쟅뷓죫ATM?LANꆣ뮻뻤뮰쮵,횻폐튻룶ATM뗘횷뗄ATM췸쟅뛔펦ퟅ뛠룶뒫춳훕뛋뗄MAC뗘횷ꆣ웤쿪쾸쓚죝쇴듽킡뷚훐쮵쏷ꆣ뿉틔닉폃틔쿂랽램쪵쿖LAN럂헦럾컱웷ꆣ(1)퓚ATM?LAN쓚엤훃뻟폐LES릦쓜뗄훕뛋;(2)쪹ATM?LAN훐뗄붻뮻믺뻟폐LES릦쓜;(3)뛀솢폚ATM훕뛋뫍ATM붻뮻믺,퓚췸싧훐짨훃폃뗄LES;(4)컯샭짏폫웤쯻럾컱웷퓚춬튻첨믺웷훐쪵쿖(떫죔틔럖늼엤훃캪뫃)ꆣ2.맣능캴쏻럾컱웷(BUS)BUS쫇럂헦틔첫췸ꆢ쇮없뮷췸뗈뒫춳LAN뗄맣능/ퟩ능릦쓜뗄럾컱웷ꆣ틔첫췸닉폃ퟜ쿟랽쪽,퓚튻쳵컯샭쎽쳥짏솬뷓뛠룶훕뛋ꆣ떱퓚틔첫횡춷훐짨훃쇋맣능뗘횷,뻍뿉뛔ퟜ쿟짏쯹폐뗄훕뛋뷸탐맣능ꆣ퓚LAN럂헦랽쪽쿂,퓚ATM?LAN쓚엤훃쇋BUSꆣ떱훕뛋튪쿲IPퟓ췸쓚뗄쯹폐훕뛋뷸탐맣능쪱,틔뗣떽뗣뗄랽쪽붫MAC뗘횷캪0xFFFFFFFFFFFF뗄맣능횡쯍떽BUS,BUS쫕떽듋탅쾢뫳뻍쿲IPퟓ췸쓚뗄좫쳥훕뛋맣능듋횡(닎퓄춼)ꆣBUSퟷ캪캴쏻럾컱웷뗄릦쓜쇴듽뗄뗚5뛎쿪쫶ꆣ럂헦엤훃럾컱웷(LECS)LECS놻폃살맜샭LAN럂헦뗄뷡릹,쳡릩LES뗘횷ꆣ럂헦뿍뮧(LEC)퓚LAN럂헦랽쪽훐붫횱솬퓚ATM?LAN짏뗄훕뛋뫍췸쟅돆ퟷLECꆣ쯼뻟폐ATM뷓뿚,돽뷸탐ATM춨탅췢,뮹펵폐탅쇮릦쓜뫍ATM뗘횷뮻(LEARP)릦쓜ꆣ춼
LLC(LogicalLinkControl)킭틩닣뗄쿂늿,틲듋뿉틔늻룄뇤LLC뗄짏닣킭틩뫍펦폃뛸볓틔샻폃ꆣ뫍IPoverATM쿠춬,튵컱쳘뚨믡뻛ퟓ닣(SSCS)놻뿕훃,횻폃AAL5살뒫쯍쫽뻝ꆣ퓚ATM?LAN훐뒫쯍쫽뻝쪱,룹뻝MAC뗘횷붨솢솬뷓,틲듋펦뻟폐탅쇮뷓뿚ꆣ춼쪾돶쇋뒫춳LAN짏뗄훕뛋춨맽ATM췸쟅폫ATM훕뛋춨탅쪱뗄킭틩럖닣쒣탍ꆣ듋춼훐췸싧닣샻폃IP킭틩,떫ATM췸쟅뫍ATM훕뛋늢늻틀삵폚IP,DECnet,SNA뫍AppleTalk뗈췸싧닣킭틩뗄뒦샭,횻틔MAC닣뗄뒦샭쪵쿖LAN럂헦ꆣ춼
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헦랽쪽뷓죫ATM?LANꆣ쿂쏦럖컶퓚헢훖쟩뿶쿂훕뛋A쿲훕뛋D랢쯍IP럖ퟩ뗄맦돌ꋙꆣ1.볙뚨틑횪쳵볾(1)훕뛋A틑횪훕뛋D뗄IP뗘횷ꆣ(2)훕뛋A늻횪뗀훕뛋D뗄MAC뗘횷ꆣ(3)췸쟅B늻횪뗀훕뛋D뗄MAC뗘횷뫍췸쟅C뗄ATM뗘횷뗄뛔펦맘쾵ꆣ튲뻍쫇쮵,췸쟅B벴쪹쫕떽랢췹훕뛋D뗄틔첫횡(횡춷훐뇪폐훕뛋D뗄MAC뗘횷),튲늻횪뗀펦쿲쓄룶LEC랢쯍ꆣ2.훕뛋A쿲훕뛋D랢쯍IP럖ퟩ뗄맦돌퓚짏쫶잰쳡쳵볾쿂,훕뛋A쿲훕뛋D랢쯍IP럖ퟩ뗄맦돌죧쿂:(1)훕뛋A캪쇋붫틔첫횡랢췹훕뛋D,뇘탫믱뗃훕뛋D뗄MAC뗘횷ꆣ틲듋훕뛋A샻폃틔첫췸짏뗄뗘횷뮻킭틩(ARP)믱좡훕뛋D뗄MAC뗘횷ꆣ(2)훕뛋A붫틑믱좡뗄훕뛋D뗄MAC뗘횷뇪볇퓚틔첫횡춷훐,쿲훕뛋D랢쯍IP럖ퟩꆣ(3)췸쟅B뷓쫕떽훕뛋A랢췹훕뛋D뗄틔첫횡,떫늢늻횪뗀펦붫쯼랢췹ATM?LAN짏뗄쓄룶LEC(ATM훕뛋믲췸쟅)ꆣ틲듋,췸쟅B쿲LES랢쯍LEARP쟫쟳(LEARPRequest)럖ퟩ,닩톯폫훕뛋D뗄MAC뗘횷뛔펦뗄ATM뗘횷(췸쟅C뗄ATM뗘횷)ꆣ헢샯볙뚨췸쟅B틑횪LES뗄ATM뗘횷늢폫웤붨솢쇋ATM솬뷓ꆣ(4)떱퓚LEARP뇭훐뗇슼폐훕뛋D뗄뗘횷뛔쪱,LES뻍샻폃LEARP펦듰(LEARPReply)럖ퟩ쿲췸쟅B믘쯍췸쟅C뗄ATM뗘횷(떱LEARP뇭훐쎻폐훕뛋D뗄뗘횷뛔쪱LES뻍샻폃LEARP쟫쟳럖ퟩ쿲좫쳥LEC닩톯)ꆣ(5)췸쟅B믱좡폫훕뛋D쿠솬뗄췸쟅C뗄ATM뗘횷뫳뻍샻폃탅쇮맦돌폫췸쟅C붨솢ATM솬뷓(SVC)ꆣ(6)췸쟅B붫쫽뻝횡럖뷢돉탅풪퓚듋ATM솬뷓짏랢췹췸쟅Cꆣ(7)췸쟅C붫쫕떽뗄탅풪믖뢴돉틔첫횡늢랢룸훕뛋Dꆣ3.솽뗣쮵쏷(1)MAC뗘횷뗄믱좡:춼훐캪쇋볲뮯뗘횷뮻킭틩뗄쮵쏷,평듺샭ARP럾컱웷(ProxyARPServer)붫훕뛋D뗄MAC뗘횷춨횪룸훕뛋A(평ProxyARPServer쪵쿖뗘횷뮻릦쓜)ꆣ쪵볊짏벴쪹쎻폐Proxy럾컱웷,샻폃ATM?LAN훐뗄BUS릦쓜튲쓜췪돉평IP뗘횷뮻돉MAC뗘횷뗄닙ퟷꆣ떫쫇붫듋맦돌볓퓘떽뗘횷뮻맦돌짏쪹킭틩뇤뗃쪮럖뢴퓓,퓚듋늻ퟷ쳖싛ꆣ(2)볙뚨틑횪LES뗄ATM뗘횷:LEC뿉춨맽LAN럂헦엤훃럾컱웷(LECS)믱좡LES뗄ATM뗘횷ꆣ
붫틔첫횡볓퓘떽ATM뗄쫽뻝룱쪽,벴횡뗄럢ힰ(capsule)랽쪽쪾폚춼ꆣ퓚IPoverATM랽쪽쿂,틔ATM/AAL5/LLC/SNAP뛔IP럖ퟩ뷸탐럢ힰ,퓚LAN럂헦랽쪽쿂횻폃ATM/AAL5살럢ힰ틔첫횡ꆣ뻟쳥뗘쮵,닰쿂틔첫횡7ퟖ뷚뗄잰떼싫,퓚듋캻훃짏ힰ엤춼
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짏뗄뗘횷뮻퓚IPoverATM랽쪽쿂,샻폃ARP럾컱웷붫IP뗘횷뮻돉ATM뗘횷ꆣ퓚LAN럂헦랽쪽쿂,틲퓚ATM횮짏뒫쯍뗄쫇틔첫횡,맊펦붫MAC뗘횷뮻돉ATM뗘횷ꆣ헢튻릦쓜평LAN럂헦럾컱웷(LES)쪵쿖ꆣ3.맣능/ퟩ능릦쓜퓚IPoverATM랽쪽훐캴맦뚨맣능/ퟩ능릦쓜,퓚LAN럂헦랽쪽훐뿉샻폃맣능캴쏻럾컱웷(BUS)쪵쿖맣능/ퟩ능릦쓜ꆣ4.뗘횷뛔펦맘쾵퓚IPoverATM랽쪽쿂,IP뗘횷뫍ATM뗘횷쫇튻튻뛔펦뗄;퓚LAN럂헦랽쪽쿂,떱췸쟅짏뷓폐뛠룶훕뛋쪱,탎돉뛠룶훕뛋뗄MAC뗘횷뛔펦튻룶췸쟅뗄ATM뗘횷(뛠뛔1)뗄쟩뿶ꆣ
틴벰뚯춼쿱뗈쪵쪱춨탅튵컱ꆣ쯼퓚솬뷓붨솢쪱풤럖엤듸뿭,늢쓜놣횤늻뒫쯍뎬돶풤럖듸뿭뗄탅쾢,틲뛸놻돆ퟷ풤럀쪽뿘훆(PreventiveControl)ꆣ퓚뷸탐쫽뻝춨탅쪱,평폚늻쓜풤쿈좷뚨펦럖엤뗄듸뿭,쇷죫췸쓚뗄쫽뻝럖ퟩ뗄튵컱솿(traffic)뿉쓜뎬맽췸싧뗄죝솿ꆣ퓚헢훖쟩뿶쿂,캪쪹쇷죫뗄튵컱솿늻뎬맽췸싧죝솿,펦볠닢췸싧뗄퓋폃ힴ뿶,붫펵죻(congestion)돌뛈춨횪랢쯍랽,뷸탐뚯첬뗄쫤죫쿞훆ꆣ컒쏇돆웤캪랴펦쪽뿘훆(ReactiveControl)믲랴삡탍뗄펵죻뿘훆ꆣ퓚릲쿭컯샭쎽쳥뗄LAN훐,샻폃뛠뗣럃컊(multi?access)뿘훆,쪹럖ퟩ퓚훕뛋뗈듽틔럀횹맽듳뗄튵컱솿쇷죫췸쓚ꆣATM뗄펵죻뿘훆튲쓜쳡릩샠쯆뗄릦쓜ꆣATM?LAN뻟폐탇탎/췸ힴ뗄췘웋뷡릹,뫍뒫춳뗄LAN쿠춬,뚯첬뗘뷸탐췸쓚풴뗄뺺헹뿘훆,틲듋,떱췸싧펵죻쪱,룹뻝펵죻돌뛈평췸싧쿲훕뛋믘쯍랴삡뿘훆탅뫅,퓚훕뛋뛔쫤죫뗄럖ퟩ뷸탐쿞훆살쪵쿖펵죻뿘훆(닎퓄춼)ꆣ춼
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훷튪펦폃뮰틴ꆢ춼쿱뗈뿉뇤뇈쳘싊뗄뮰틴/ATM?LAN쓚/볤ATM?LAN쓚늿?STMꋙ쿟슷럂헦춼쿱뗄쫽뻝뒫쯍뗄쫽뻝뒫쯍?(뗧슷럂헦)?????힢:ꋙSTM:춬늽뒫쯍랽쪽??1.뫣뚨뇈쳘싊튵컱(CBR:ConstantBitRateService)CBR튵컱틔뫣뚨뇈쳘싊뒫쯍탅쾢,폃폚쪵쪱뮰틴뫍뚯춼쿱뗄뒫쫤벰뗧슷럂헦(circuitemulation)ꆣ틲웤틔만뚨뗄쯙싊뒫쯍탅풪,맊뛔헢훖튵컱횻맦뚨쇋PCR뫍CDVT,컰탨맦뚨SCR뫍BTꆣ캪쇋뺡솿복킡CTD/CDV/CLR,췸싧룹뻝짪놨뗄PCR뛔CBR튵컱럖엤듸뿭늢폅쿈뷸탐뒫쯍ꆣ샽죧,퓚뷸탐뮰틴뫍춼쿱춨탅쪱,죧틑횪웤뇠싫랽쪽,뻍쓜좷뚨웤튵컱솿쒣쪽,늢틔듋캪틀뻝럖엤듸뿭ꆣ2.뿉뇤뇈쳘싊튵컱(VBR:VariableBitRateService)VBR튵컱놻폃살뒫쯍쪵쪱뇤쯙싊뗄틴욵뫍쫓욵탅쾢,샽죧닉폃닮럖뇠싫뗄뚯춼쿱뗄뒫쯍뻍쫴폚VBR튵컱,쯼늢늻탨튪튻횱놣돖럥횵탅풪쯙싊듸뿭뗄튵컱솿ꆣVBR튵컱튲횧돖쿱릫폃췸훐뗄횡훐볌튵컱쓇퇹뗄풤쿈맦뚨쇋뒫쫤쯙싊뗄럇쪵쪱쫽뻝춨탅튵컱ꆣ퓚VBR튵컱훐쪹폃쇋PCR,CDVT,SCR뫍BT뗈튵컱솿닎쫽ꆣATM췸싧룹뻝헢샠폃뮧뗄짪놨닎쫽럖엤튻뚨뗄듸뿭살싺ퟣ웤쯹탨뗄춨탅훊솿ꆣVBR폫ABR뗄쟸뇰퓚폚:VBR풤쿈틔짏쫶닎쫽뷸탐듸뿭럖엤,틲뛸뿉놣횤튵컱훊솿,늢쟒췸싧컰탨틲뚯첬룄뇤뇈쳘싊뛸랢쯍랴삡탅뫅ꆣ3.뿉믱뗃뇈쳘싊튵컱(ABR:AvailableBitRateService)ABR튵컱쫊폃폚뻸듳뛠쫽볈폐LAN뗄펦폃,쯼늻풤쿈룸폃뮧럖엤뇘튪뗄듸뿭ꆣ샽죧,떱쳡릩TCP/IP뗈쫽뻝펦폃쪱,뿉늻풤쇴듸뿭뷸탐쫽뻝뒫쯍ꆣ횻튪솴슷뿕쿐,뻍쓜퓚튻쳵솬뷓짏샻폃솴슷쪣폠뗄좫늿듸뿭ꆣ떱솴슷짏뗄튵컱솿훰붥퓶듳쪱,뻍ퟔ뚯뗘붵뗍쯙싊ꆣABR튵컱뛔쪱퇓쳵볾뗄튪쟳뫜뗍,떫뛔CLR뗄튪쟳좴쪮럖뿁뿌ꆣ틲듋,쯼튲놻돆ퟷ뷟뺡좫솦튵컱(BestEffortService)ꆣABR폫CBR,VBR뫍UBR샠탍튵컱뗄ퟮ듳쟸뇰퓚폚붨솢솬뷓쪱횻짪놨PCR,웤쪵볊뗄뒫쫤쯙싊뾿랴삡뿘훆,룹뻝췸싧펵죻ힴ뿶ퟔ쫊펦뗘쿞훆퓚PCR횵틔쿂ꆣ4.캴횸뚨뇈쳘싊튵컱(UBR:UnspecifiedBitRateService)쯼폫ABR튵컱쿠춬,퓚붨솢솬뷓쪱횻짪놨PCR,떫늻럖엤듸뿭튲늻ퟷPCR틔췢뗄죎뫎쫤죫뿘훆,틲듋늻쓜놣횤튵컱훊솿ꆣUBR튵컱늻뻟폐폃램닎쫽뿘훆(UPC)릦쓜,맊ATM붻뮻릦쓜뿉틔볲뮯ꆣ퓚UBR훐쯹탨뗄튵컱솿뿘훆췪좫뾿훕뛋놾짭살쪵쿖ꆣ평폚퓚쳘뚨뗄ATM?LAN쓚늿늻듦퓚쇷뿘(flowcontrol)믺훆늻춬뗄훕뛋,틲듋뿉틔샻폃UBR튵컱ꆣ떱ATM?LAN훐듦퓚탭뛠ힴ뿶늻쏷뗄폃뮧쪱UBR튵컱뻍늻쫊폃쇋ꆣABR쫇평UBR엉짺뗄닺컯,뿉틔쮵쯼쫇퓚쒳훖돌뛈짏볦맋듸뿭샻폃싊폫탅풪뚪쪧훊솿뗄ATM췸싧튵컱ꆣABR튵컱훐짪놨뗄닎쫽폐럥횵탅풪쯙싊뫍ퟮ뗍탅풪쯙싊ꆣ췸싧늻놣횤쇷죫웤쓚뗄뎬돶럥횵쯙싊뗄탅풪뗄헽뎣뒫쯍,떫훁짙놣횤틔ퟮ뗍탅풪쯙싊살뒫쯍ꆤ174ꆤ
탅풪ꆣ퓚쫽뻝춨탅훐,폐쪱틲펵죻닺짺탅풪뚪쪧,쪹췌췂솿(throughput)쿔훸쿂붵ꆣ떫퓚ABR튵컱훐횻튪훕뛋ퟱ쫘맦뚨뗄쇷뿘,뻍쓜뇜쏢펵죻,쪹탅풪뚪쪧벸뫵캪0ꆣ틲듋ABR튵컱튲쫊폃폚폃뮧쫽쒿늻뚨뗄릫폃췸ꆣ
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2.쯙싊뿘훆랽쪽춼쪾돶쇋쯙싊뿘훆랽쪽뗄풭샭ꆣ랢탅훕뛋펵폐뚯첬룄뇤쯙싊뗄뚯첬헻탎웷(shaper)ꆣ퓚헻탎웷훐룹뻝췸싧뗄펵죻돌뛈뻶뚨탅풪쯙싊,컒쏇돆웤캪놻죏뿉뗄탅풪쯙싊(ACR:AllowedCellRate)ꆣ뿉틔룹뻝췸싧뗄펵죻돌뛈퓚짪놨뗄럥횵탅풪쯙싊PCR틔쿂뛔춼
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맜샭듋탅폃탅쾢,춬쪱좷놣랢쯍탅풪쪱뮺듦웷늻랢짺틧돶ꆣ쿂쏦룸돶탅폃랽쪽뿘훆뗄튻룶펦폃쪵샽ꆣ룷붻뮻믺뛔쎿쳵VC뚼짨폐튻룶탩쓢뛓쇐ꆣ랢쯍랽캬돖횸쪾룃VC뿉폃뗄뮺듦죝솿뗄탅폃폠뛮(creditbalance)ꆣ랢탅랽쎿랢쯍튻룶탅풪뻍복짙듋폠뛮,떱폠뛮캪0쪱,뻍훐횹랢쯍ꆣ틲탅폃폠뛮쫇내VC훰쳵맜샭뗄,쯹틔폠뛮늻캪0뗄웤쯻VC죔뿉랢쯍탅풪ꆣ뷓쫕랽붫탅풪쯍췹쿂튻룶붻뮻믺,튻떩뮺듦웷폐뿕뻍쿲랢쯍랽랢쯍탅폃탅쾢ꆣ샻폃탅폃랽쪽쯤좻뿉틔퓚LAN훐좷놣컞탅풪뚪쪧뫍룷쳵VC뗄릫욽샻폃,떫헢훖랽쪽튪쟳룷룶붻뮻믺내VC짨훃탩쓢뛓쇐,쪹붻뮻믺뗄뷡릹뢴퓓뮯ꆣ듋췢,쿱맣폲췸(WAN)뗈붻뮻믺볤뻠샫뫍뒫쫤쪱퇓뫜듳뗄췸싧,캪럀횹탅풪뚪쪧뻍탫뛔룷쳵VC럖엤쿠떱듳뗄탅폃폠뛮,틲뛸튪엤훃듳솿뗄뮺듦웷ꆣ본폚짏쫶샭평,ATM싛첳1994쓪9퓂퓚첫뮪믡틩짏튻훂춬틢ABR튵컱뗄펵죻뿘훆늻폃탅폃랽쪽뛸닉폃쯙싊뿘훆랽쪽ꆣ
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뒫춳LAN훐뗄춼
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ILMI쫇ATM짨놸볤붻뮻맜샭탅쾢뗄뷓뿚ꆣ죧퓚킡뷚훐닻쫶뗄쓇퇹,ATM훕뛋폫ATM붻뮻믺볤뷸탐뗘횷뗇슼쪱튪샻폃ILMIꆣ춼뗄쿂냫늿럖쪾돶쇋닉폃ILMI뗄ATM?LAN뗄췸싧쒣탍,퓚뷡릹짏쯼뫍뒫춳LAN뗄췸맜쒣탍(닎퓄춼)싔폐늻춬ꆣ퓚ILMI뗄췸싧쒣탍훐,룷룶ATM짨놸쓚엤훃폐ATMUNIMIB뫍UME(UNIManagementEntity:UNI맜샭쪵쳥)ꆣ튻쳵컯샭쿟슷솽뛋뗄쿠쇚UME쿠뮥붻뮻ATMUNIMIB탅쾢ꆣILMIퟮ돵쫇ퟷ캪UNI맜샭뷓뿚뛸맦뚨뗄,떫튲쫊폃폚NNI(닎퓄춼),틲듋튲붫ATMUNIMIB돆ퟷILMIMIBꆣ펦떱힢틢,쯼횻엤훃퓚ATM짨놸훐,NMS쓚늻듦퓚ILMIMIBꆣILMI폫M1,M2,M3뷓뿚늻춬,퓚M1,M2뫍M3뷓뿚솽닠뗄Agent뫍NMS쫇럇뛔돆뗄럾컱웷폫뿍뮧뗄맘쾵,뛸퓚ILMI뗄췸싧쒣탍훐UME춬쪱뻟폐NMS뫍Agent헢솽훖릦쓜ꆣ쿠쇚뗄UME쫇뛔뗈뗄(PeertoPeer),늢쟒쯼쏇뗄킭틩튲쫇뛔돆뗄ꆣ틲듋,ILMI뗄믹놾맜샭탅쾢돽쇋폫뗘횷뗇슼킭틩폐맘뗄MIB췢,뚼쫇ꆰ횻뛁럃컊(ReadOnlyAccess)탍ꆱ뗄ꆣILMI뗄췸맜킭틩뗄킭틩햻쪾폚춼ꆣ퓚ILMI훐튲닉폃쇋SNMPퟷ캪맜샭탅쾢뗄뒫쫤킭틩ꆣSNMP횱뷓볓퓘퓚AAL5짏,튲뻍쫇쮵퓚ILMI짏듦퓚ퟅATM/AAL5/SNMP킭틩햻ꆣ헢뫍듓뒫춳LAN뗄NMS럃컊ATM짨놸뗄Agent쪱쯹폃뗄ATM/AAL5/IP/UDP/SNMP킭틩햻쫇늻튻퇹뗄ꆣ헢쫇평폚퓚M1,M2뫍M3뷓뿚훐캪쇋횸뚨Agent,튻뚨튪폃IP뗘횷뛔웤뷸탐톰횷,뛸퓚ILMI훐춨탅뛔쿳뿏뚨쫇쿠쇚짨놸,틲듋컰탨샻폃IP뗘횷,횱뷓폃AAL5뻍쓜랢쯍/뷓쫕SNMPPDUꆣ캪쇋퓚쿠쇚UME볤뒫쯍맜샭탅쾢,뛔ATM솬뷓ퟷ돶쇋맦뚨(닎퓄뇭)ꆣ솬뷓쯹폃뗄VPI/VCI펦쫇뿉뇤뗄,웤훐VPI=0,VCI=16쫇좱쪡횵ꆣ듋췢,뮹맦뚨펦붫탅풪뚪쪧폅쿈뇈쳘훃돉0(벴CLP=0),ILMI뗄튵컱솿뿘훆퓚솴슷죝솿뗄1%틔쿂ꆣ뇭
춨맽퓚틑폐뗄MIB쫷짏짺돉탂쫷횦살ힷ볓헢킩짨놸뗄맜샭탅쾢ꆣATM짨놸뗄MIB(ILMIMIB)평ATM싛첳뚨틥,늢ퟷ캪enterprises()쫷횦쿂뗄353뫅횦짏뗄쓚죝늻뛏ힷ볓ꆢ삩돤ꆣ짨놸탅쾢퓚ILMIMIB훐늢캴뚨틥폫ATM컞맘뗄ꆢATM짨놸놾짭뗄탅쾢ꆣ춨뎣쾵춳탅쾢짨훃돉평MIB?II뚨틥뗄ꆰsystemꆱ뗄쫷횦()ꆣ퓚ILMI훐뇘탫낲ힰ듋쫷횦ꆰsystemꆱ(닎퓄춼)ꆣ뗄럖샠ATMUNIMIB뿉럖캪틔쿂벸샠ꆣ쿂쏦훰닣뛔MIB훐짨훃뗄탅쾢뷸탐쮵쏷(쿪볻쫩뫳뗄뢽슼)ꆣ(1)컯샭닣뷓뿚탅쾢샠(PhysicalPortGroup)컯샭닣뷓뿚뗄탅쾢짨훃퓚ATMUNIMIB쫷훐뗄컯샭뛋뿚샠atmfPhysicalGroup()뗄쫷횦짏,쯼냼삨틔쿂6쿮:ꋙ컯샭뷓뿚쯷틽:떱튪믱좡쿂쫶뗄컯샭뷓뿚탅쾢틔벰ATM닣ꆢVP솬뷓뫍VC솬뷓뗄탅쾢쪱,뿉샻폃컯샭뷓뿚쯷틽(PhysicalInterfaceIndex)횸쏷룃탅쾢쫴폚쓄룶컯샭뷓뿚ꆣꋚ컯샭뷓뿚뗘횷:벴뗘횷뗇슼탅쾢ꆣꋛ뒫쫤랽쪽:짨훃듋컯샭뷓뿚닉폃뗄뒫쫤랽쪽뗄샠탍(죧SONETSTS?3C,DS3,100MTAXI,155TAXI뗈)ꆣꋜ쎽쳥샠탍:짨훃듋컯샭뷓뿚짏쯹폃뗄컯샭쎽쳥샠탍(죧춬훡뗧샂ꆢ떥쒣맢쿋ꆢ뛠쒣맢쿋ꆢ웁뇎쮫뷊쿟뫍컞웁뇎쮫뷊쿟뗈)ꆣꋝ컯샭뛋뿚퓋폃샠탍:짨훃듋컯샭뷓뿚뗄퓋폃ힴ첬(뿉틔쪹폃ꆢ늻쓜쪹폃뫍뮷믘(loopback)ힴ첬뗈)ꆣꋞ뷓뿚쳘쫢탅쾢:뛔듋컯샭뷓뿚뫍컯샭뷓뿚뗄뒫쫤랽쪽짨훃쳘쫢뗄탅쾢ꆣ(2)ATM닣탅쾢샠(ATMLayerGroup)폫ATM닣폐맘뗄탅쾢짨훃퓚ATMUNIMIB쫷훐뗄atmfAtmLayerGroup()뗄쫷횦짏,ATM닣탅쾢냼삨틔쿂5쿮:ꋙATM닣쯷틽:폫컯샭뷓뿚쯷틽쿠춬ꆣꋚVPC뫍VCC뗄ퟮ듳쫽쒿:퓚폃ATM닣쯷틽횸뚨뗄뷓뿚짏,짨훃룃뷓뿚쯹쓜뒦샭뗄ퟮ듳VPC뫍VCC쫽쒿ꆣꋛ쪹폃훐뗄VPC뫍VCC쫽쒿:퓚ATM닣쯷틽횸뚨뗄뷓뿚짏,짨훃떱잰헽퓚쪹폃뗄VPC뫍VCC쫽쒿ꆣꋜ쓜릻샻폃뗄VPC뫍VCC뇈쳘뎤뛈:퓚ATM탅춷훐폐8뇈쳘VPIퟖ뛎뫍16뇈쳘VCIퟖ뛎,퓚ATM닣쯷틽횸뚨뗄뷓뿚짏,짨훃웤훐폐킧뗄뗍캻뇈쳘ꆣꋝATMUNI뛋뿚샠탍:횸쏷ATM닣쯷틽횸뚨뗄뷓뿚쫇릫폃UNI뮹쫇폃UNIꆣ(3)ATM닣춳볆탅쾢샠(ATMStatisticsGroup)ATM닣춳볆탅쾢짨훃퓚ATMUNIMIB쫷훐뗄atmfAtmStatsGroup()뗄쫷횦짏,폃쯼횸쪾뷓쫕/랢쯍뗄탅풪쫽뫍엗웺쫕떽뗄탅풪쫽ꆣꆤ185ꆤ
(4)탩춨뗀솬뷓탅쾢샠(VirtualPathGroup)폫VP폐맘뗄탅쾢짨훃퓚ATMUNIMIB쫷훐뗄atmfVpcGroup()뗄쫷횦짏ꆣVP솬뷓탅쾢냼삨틔쿂5쿮쓚죝:ꋙ뷓뿚쯷틽ꆣꋚVPI횵:뷓뿚쯷틽폫컯샭쯷틽쿠춬ꆣ샻폃뷓뿚쯷틽뫍VPI횵믱좡틔쿂뗄VP솬뷓탅쾢쪱,뿉폃쯼살횸뚨VP솬뷓(VPC)ꆣꋛ랢쯍튵컱솿쏨쫶럻뫍뷓쫕튵컱솿쏨쫶럻(trafficdescriptor):뛔평뷓뿚쯷틽뫍VPI횵횸뚨뗄VPC짨훃랢쯍튵컱솿쏨쫶탅쾢뫍뷓쫕튵컱솿쏨쫶탅쾢ꆣꋜ퓋폃ힴ첬:짨훃평뷓뿚쯷틽뫍VPI횵횸뚨뗄VPC뗄퓋폃ힴ첬ꆣ떱틑횪VPC짏뗄놾랽뛋뗣탅쾢,춬쪱튲횪뗀뛔랽뛋뗣탅쾢쪱,짨훃돉뛋떽뛋솬뷓(endtoendup),웤횵캪2;뛋떽뛋뛏(endtoenddown),웤횵캪3ꆣ죧횻횪뗀VPC짏뗄놾랽뛋뗣탅쾢쪱,짨훃돉localUPEndUnknown,웤횵캪4;믲짨훃돉localDown,웤횵캪5ꆣꋝ랢쯍/뷓쫕튵컱훊솿(QoS)뗄뗈벶:짨훃랢쯍/뷓쫕QoS뗈벶,쿪쾸쓚죝닎뾼뗄뢽슼Aꆣ(5)탩춨슷솬뷓탅쾢샠(VirtualChannelGroup)폫VC폐맘뗄탅쾢짨훃퓚ATMUNIMIB쫷훐뗄atmfVccGroup()뗄쫷횦짏ꆣVC솬뷓탅쾢냼삨틔쿂6쿮,틲웤쓚죝폫VP솬뷓탅쾢쿠춬,맊뷶쇐돶뇪쳢,늻뛠ힸ쫶ꆣꋙ뷓뿚쯷틽;ꋚVPI횵;ꋛVCI횵;ꋜ랢쯍/뷓쫕튵컱솿쏨쫶럻;ꋝ퓋폃ힴ첬;ꋞ랢쯍/뷓쫕QoS뗈벶ꆣ(6)췸싧잰ힺ탅쾢샠(NetworkPrefixGroup)atmfNetPrefixGroup폃폚뗘횷뗇슼킭틩뗄ATM뗘횷뗄췸싧잰ힺ늿럖ꆣ(7)ATM뗘횷뇭(AddressTable)atmfAddressTable폃폚뗘횷뗇슼킭틩뗄NetworkPrefix+ESIꆣ
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ꆱ맦뚨쇋ATM췸싧만폐뗄컯샭췘웋뷡릹뫍솬뷓맜샭뗄MIB,볲돆AToMMIBꆣ틲듋쓜릻폃Internet뇪ힼMIB쪵쿖M1,M2뫍M3뷓뿚뗄듳늿럖뗄맜샭릦쓜ꆣRFC1695뗄MIB뷡릹훷튪럖캪맦뚨ATM뷓뿚샠ꆢ맜샭솬뷓샠뫍맜샭AAL5뷓뿚샠ꆣ웤ퟮ듳쳘뗣쫇NMS뿉틔듓풶랽샻폃솬뷓샠뗄MIB뛔룷룶붻뮻믺붨솢/쫍럅솬뷓ꆣRFC1695뗄훷튪MIB뗄뷡릹폐틔쿂6쿮ꆣ(1)ATM뷓뿚엤훃탅쾢샠(ATMInterfaceconfigurationgroup):atmInterfaceConfTable샻폃헢샠탅쾢횸쪾룷뷓뿚짏뗄ퟮ듳VPC/VCC쫽쒿뫍쿠쇚뷚뗣탅쾢ꆣ(2)ATM뷓뿚탩춨뗀솴슷엤훃탅쾢샠(ATMInterfaceVirtualPathLinkconfigurationgroup):atmVpcTable샻폃헢샠탅쾢횸쪾룷뷓뿚짏뗄VP솴슷뗄퓋폃ힴ첬뫍튵컱솿닎쫽ꆣ(3)ATM뷓뿚탩춨슷솴슷엤훃탅쾢샠(ATMInterfaceVirtualVCLconfigurationgroup):atmVclTable샻폃헢샠탅쾢횸쪾룷뷓뿚짏뗄VC솴슷뗄퓋폃ힴ첬ꆢ튵컱솿닎쫽뫍VC뛋뗣짏뛋뷓AAL뗄쓚죝ꆣ(4)ATMVP붻닦솬뷓탅쾢샠(ATMVPCrossConnectgroup):atmVpCrossConnectTable샻폃헢샠탅쾢횸쪾룷쳵VP뗄쫤죫/쫤돶뛋뿚뇪횾럻ꆢ쫤죫/쫤돶VP뗄VPI틔벰VP퓋폃ힴ첬뗈ꆣ(5)ATMVC붻닦솬뷓탅쾢샠(ATMVCCrossConnectgroup):atmVcCrossConnectTable샻폃헢샠탅쾢횸쪾룷쳵VC뗄쫤죫/쫤돶뛋뿚뇪횾럻ꆢ쫤죫/쫤돶VC뗄VCI틔벰VC뗄퓋폃ힴ첬뗈ꆣ(6)ATM뷓뿚AAL5VCC탔쓜춳볆탅쾢샠(ATMInterfaceAAL5performancestatisticsgroup):aal5VccTable샻폃헢샠탅쾢횸쪾AAL5뛋뗣짏뗄춳볆탅쾢ꆣ
1.샻폃ILMI쪶뇰뻖늿췘웋뷡릹룷ATM붻뮻믺뫍ATM훕뛋붫맜샭쯼쏇뗄췸맜듺샭(Agent)뗄췸싧뗘횷뫍뇪쪶룷룶뛋뿚뗄뛋뿚뇪횾럻ퟷ캪ILMIMIB짨훃퓚쎿룶ATM뛋뿚짏ꆣ퓚ILMIMIB뗄컯샭뛋뿚샠짏볓죫ꆰatmfMyIpNmAddressꆱ뫍ꆰatmfPortMyIfNameꆱ쿻쾢,늢샻폃ILMI킭틩붫듋탅쾢춨횪룸쿠쇚뗄ATM붻뮻믺뫍쿠쇚뗄ATM훕뛋(닎퓄춼)ꆣ춼
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atmVcCrossConnectLowIfIndexIfIndex,atmVcCrossConnectLowVpiINTEGER,atmVcCrossConnectLowVciINTEGER,atmVcCrossConnectHighIfIndexIfIndex,atmVcCrossConnectHighVpiINTEGER,atmVcCrossConnectHighVciINTEGER,atmVcCrossConnectAdminStatusINTEGER,atmVcCrossConnectL2HOperStatusINTEGER,atmVcCrossConnectH2LOperStatusINTEGER,atmVcCrossConnectL2HLastChangeTimeStamp,atmVcCrossConnectH2LLastChangeTimeStamp,atmVcCrossConnectRowStatusRowStatus샽죧,캪쇋좷뚨듓뛋뿚3뗄Vpi4,Vci6떽뛋뿚8뗄Vpi12,Vci14뗄PVC,펦랢쯍틔쿂뗄쏼쇮:SetRequest{=createAndWait}3.떱쫍럅PVC쪱튲펦뛔쯹뺭슷평짏뗄쯹폐뷚뗣뗄AToMMIB뷸탐짨훃ꆣ샽죧뛔뷗뛎2붨솢뗄PVC뿉폃틔쿂뗄SET쏼쇮뷸탐쫍럅:SetRequest{=destroy}ꆤ191ꆤ
뗚8헂?ATM췸싧벼쫵뗄뇪ힼ뮯뚯쿲
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맺볊뇪ힼ뮯ퟩ횯(ISO:InternationalOrganizationforStandardization)틔ITU?T뇪ힼ뮯뗄뷡맻캪삶놾,퓚(퇐뺿OSI쿂닣뗄)JTC1/SC6ꋙ뗄솽룶릤ퟷퟩ(WG)훐뻍ATM뇪ힼ뮯컊쳢햹뾪쳖싛ꆣ쫗쿈,퇐뺿쫽뻝솴슷닣뗄WG1쳡돶쇋솽룶퇐뺿뿎쳢ꆣ튻룶쫇ATM뮷(ATMRing),쯼ퟷ캪튻훖룟쯙ATM?LAN뗄뫲톡랽낸쫜떽맘힢ꆣ쇭튻룶퓲ퟷ캪탂뗄룟쯙쫽뻝솴슷킭틩뫲톡랽낸,쯼폖럖돉솽훖랽쪽,떫뚼틔쫊폃ATM캪잰쳡ꆣ웤훐튻룶쫇HDLC뗄룄솼냦,쯼쪵쿖쫽뻝훘랢뒦샭랽쪽뫍쒣쫽뗄삩햹,쇭튻룶쫇ITU?T헽퓚퇐뺿뗄SSCOPꆣWG2쫇췸싧닣퇐뺿ퟩ,룃ퟩ뛔ATM짏뗄뛠킭틩뗄럢ힰ뷸탐쇋퇐쳖뛔ATM튲쓜쫊폃뗄OSI췸싧닣튵컱(CONꋚS)쳡릩뗄킭틩튲퓚퇐쳖훐ꆣ
뗧탅벼쫵캯풱믡(TTC:TelecommunicationTechnologyCommittee)ퟷ캪죕놾맺쓚뗄뇪ힼ뮯믺릹뛔ATM/B?ISDN쿠맘뗄뇪ힼ뮯뷸탐퇐쳖ꆣ퓚웤뗚2늿쏅캯풱믡횮쿂짨솢쇋솽룶튵캯풱믡,벴뗚2튵캯풱믡뫍뗚5튵캯풱믡ꆣ뗚2튵캯풱믡퇐쳖폃뮧?췸싧뷓뿚뗄탅쇮,뗚5튵캯풱믡훷튪퇐뺿죧뫎붫ITU?T붨틩폃폚죕놾맺쓚,벴뷸탐쮳쇷뗄뇪ힼ뮯ퟷ튵ꆣ쯼뗄퇐뺿뛔쿳냼삨폃뮧?췸싧뷓뿚벰쿠맘뗄췸싧릦쓜뗄뇪ힼ뮯,뻟쳥럖돉죽룶ퟓ릤ퟷퟩ(SWG)뷸탐퇐쳖ꆣ듋췢,뗚2늿쏅캯풱믡뮹짨솢쇋B?ISDN쳘뇰튵캯풱믡,룃캯풱믡ퟷ캪죕놾폊헾쪡뗧탅벼쫵짳틩믡뗚9튵캯풱믡쿂뗄B?ISDN럖믡훷튪뢺퓰짳틩뿉쓜돉캪뷱뫳ITU?T붨틩뗄폐맘쫂쿮,탎돉죕놾쳡낸ꆣ헢튲쫇튻훖쓦쇷믮뚯ꆣ뗚1늿쏅캯풱믡짨솢쇋뗚1쏅캯풱믡,뢺퓰퇐쳖췸싧?뷚뗣볤뗄탅쇮ꆣ
뾪쪼뗄,웤뇪ힼ뮯뗄랢햹맽돌쪾폚춼ꆣ1985쓪1퓂퓚싗뛘헙뾪뗄뗚8퇐뺿믡웚뗚1듎ISDN볒믡틩짏쳡돶붫B?ISDNퟷ캪뗚18퇐뺿ퟩ(SGꋺꋵꋳꋙ)뗄훘튪퇐뺿뿎쳢횮튻,늢짨솢쇋쏅퇐뺿듋뿎쳢뗄죎컱ퟩ(BBTG:BroadbandTaskGroup)ꆣ춼
쾸붨틩ꆣ퓚1993쓪3퓂뻙탐뗄ITU?Tퟜ믡짏믣벯쇋ATM닣뫍ATM쫊엤닣ꆢOAM풭퓲ꆢ쇷솿뿘훆뗈쿪쾸붨틩,벴좷뚨쇋뗚1냦쿪쾸붨틩(1992쓪냦쿪쾸붨틩)ꆣ헢샯쏦냼몬쇋퓚춬튻룶췸싧훐뒫쯍B?ISDN뗄뮰틴ꆢ춼쿱뫍쫽뻝탅쾢쯹탨뗄믹놾뇪ힼꆣ폫UNI뇪ힼ뮯뗄춬쪱,뗚11퇐뺿ퟩ(SGꋻꋙ)듓뗚9퇐뺿믡웚뾪쪼ퟅ쫖뛔B?ISDN뗄탅쇮뷸탐퇐뺿ꆣ탅쇮퇐뺿뛔쿳냼삨샻폃ATM뒫쯍탅쇮쯹탨뗄폃뮧?췸싧킭틩벰췸볤킭틩,횧돖룷훖춨탅탎쪽퓚폃뮧?췸싧볤쯹탨뗄탅쇮탅쾢풪쯘뫍맦돌ꆣ쳘뇰퓚쪵쿖뫳헟쪱힢틢떽폫N?ISDN탅쇮뗄욥엤뫍볌돐탔,삩햹ꆢ쳡룟틑폐뗄붨틩(N?ISDNUNI탅쇮)뫍ISUP(N?ISDNNNI탅쇮)뗄릦쓜ꆣ탅쇮뇪ힼ뗄뗚1냦붨틩폚1994쓪헽쪽릫늼ꆣퟛ짏쯹쫶,ITU?T뇪ힼ뮯뗄릤ퟷퟮ돵쫇캪쇋쪵쿖B?ISDN,듓믹놾탅쾢뒫쫤릦쓜ꆢ컯샭뷓뿚벰ATM랽쪽뗄퇐뺿뾪쪼뗄,훰붥짮죫햹뾪뛔쳡릩뻟쳥B?ISDN튵컱쯹탨릦쓜뗄첽쳖ꆣퟷ캪퇐뺿뗄뗚뛾뷗뛎(1994ꆫ1995쓪),맦뚨쇋뿉뇤뇈쳘싊뇠싫뗄뮰틴ꆢ춼쿱뗄춼
VBR튵컱,늢퇐뺿B?ISDN튵컱쯹뇘탨뗄릦쓜,죧쳡릩뛠룶뗈벶뗄튵컱훊솿,뷸탐1뛔N뗄붻뮻뗈ꆣ듋췢횧돖ퟔ싉럖늼쪽볆쯣믺춨탅뗄퇐뺿틔벰폫뒫춳췸싧뮥솬뇪ힼ튲헽쪽뾪쪼퇐뺿ꆣ뗚죽뷗뛎(1996쓪잰뫳)볆뮮뛔럖엤탍/맣능탍튵컱뷸탐퇐쳖ꆣ
춼
췸폫폃췸솽훖UNI,늢맦뚨쇋UNI훐뗄컯샭뷓뿚뫍뒫쫤믡뻛ퟓ닣(TC)ꆣ웤훐폃췸뗄뷓뿚맦랶틑뎬돶쇋ITU?T붨틩뗄랶캧,쯼쫊폃폚ATM?LAN(닎퓄춼)ꆣ퓚UNI짏뮹맦뚨쇋퓝쪱뻖늿맜샭뷓뿚(ILMI)ퟷ캪솬뷓맜샭탅쾢폃뗄뷓뿚,헢튲쫇쯼쏇뗄닮틬횮튻ꆣ듋췢,뛔쇷솿닎쫽(trafficparameter)돽닉폃ITU?T붨틩뗄럥횵탅풪쯙싊췢,뮹맦뚨쇋캬돖탅풪욽뻹쇷솿뗄돖탸탅풪쯙싊(SCR:SustainableCellRate)ꆣ탅쇮퓲틔ITU?TSG11ퟮ돵붨틩캪믹뒡,늢맦뚨쇋뗣뛔뛠뗣뗄솬뷓맦돌ꆣ춼
춼
닎뾼컄쿗[1]ITU?,,,March1993[2]ITU?,,,,,,,,?,,March1993[3]ITU?,,1991[4]ITU?,,,,,,?,,,,1994[5]
뢽슼?ATMUNIMIB쫷enterprises()+atmForum(353)?+atmForumAdmin(1)?+atmfTransmissionTypes(2)+atmfUnknownType(1)+atmfSonetSTS3c(2)+atmfDs3(3)+atmf4B5B(4)+atmf8B10B(5)+atmfMediaTypes(3)+atmfMediaUnknownType(1)+atmfMediaCoaxCable(2)+atmfMediaSingleMode(3)+atmfMediaMultiMode(4)+atmfMediaStp(5)+atmfMediaUtp(6)+atmfNoDescrTypes(4)+atmfNoDescriptor(1)+atmfPeakRate(2)+atmfNoClpNpScr(3)+atmfClpNoTaggingNoScr(4)+atmfClpTaggingNoScr(5)+atmfNoClpScr(6)+atmfClpNoTaggingScr(7)+atmfClpTaggingScr(8)+atmForumUni(2)+atmfPhysicalGroup(1)+atmfPortTable(1)???+atmfPortEntry(1)??????+atmfPortIndex(1)??????+atmfPortAddress(2)??????+atmfTransmissionType(3)??????+atmfPortMediaType(4)??????+atmfPortOperStatus(5)??????+atmfPortSpecific(6)+atmfAtmLayerGroup(2)ꆤ203ꆤ
+atmfAtmLayerTable(1)???+atmfAtmLayerEntry(1)??????+atmfAtmLayerIndex(1)??????+atmfAtmLayerMaxVPCs(2)??????+atmfAtmLayerMaxVCCs(3)??????+atmfAtmLayerConfiguredVPCs(4)??????+atmfAtmLayerConfiguredVCCs(5)??????+atmfAtmLayerVpiBits(6)??????+atmfAtmLayerVciBits(7)??????+atmfAtmLayerUniType(8)+atmfAtmStatsGroup(3)+atmfAtmStatsTable(1)???+atmfAtmStatsEntry(1)??????+atmfAtmStatsIndex(1)??????+atmfAtmStatsReceivedCells(2)??????+atmfAtmStatsDroppedReceivedCells(3)??????+atmfAtmStatsTransmittedCells(4)+atmfVpcGroup(4)+atmfVpcTable(1)???+atmfVpcEntry(1)??????+atmfVpcPortIndex(1)??????+atmfVpcVpi(2)??????+atmfVpcOperStatus(3)??????+atmfVpcShaperTrafficDescriptorType(4)??????+atmfVpcShaperTrafficDescriptorParam1(5)??????+atmfVpcShaperTrafficDescriptorParam2(6)??????+atmfVpcShaperTrafficDescriptorParam3(7)??????+atmfVpcShaperTrafficDescriptorParam4(8)??????+atmfVpcShaperTrafficDescriptorParam5(9)??????+atmfVpcPolicerTrafficDescriptorType(10)??????+atmfVpcPolicerTrafficDescriptorParam1(11)??????+atmfVpcPolicerTrafficDescriptorParam2(12)??????+atmfVpcPolicerTrafficDescriptorParam3(13)??????+atmfVpcPolicerTrafficDescriptorParam4(14)??????+atmfVpcPolicerTrafficDescriptorParam5(15)??????+atmfVpcQOSCategory(16)??????+atmfVpcTransmitQOSClass(17)??????+atmfVpcReceiveQOSClass(18)+atmfVccGroup(5)+atmfVccTable(1)???+atmfVccEntry(1)??????+atmfVccPortIndex(1)ꆤ204ꆤ
??????+atmfVccVpi(2)??????+atmfVccVci(3)??????+atmfVccOperStatus(4)??????+atmfVccShaperTrafficDescriptorType(5)??????+atmfVccShaperTrafficDescriptorParam1(6)??????+atmfVccShaperTrafficDescriptorParam2(7)??????+atmfVccShaperTrafficDescriptorParam3(8)??????+atmfVccShaperTrafficDescriptorParam4(9)??????+atmfVccShaperTrafficDescriptorParam5(10)??????+atmfVccPolicerTrafficDescriptorType(11)??????+atmfVccPolicerTrafficDescriptorParam1(12)??????+atmfVccPolicerTrafficDescriptorParam2(13)??????+atmfVccPolicerTrafficDescriptorParam3(14)??????+atmfVccPolicerTrafficDescriptorParam4(15)??????+atmfVccPolicerTrafficDescriptorParam5(16)??????+atmfVccQOSCategory(17)??????+atmfVccTransmitQOSClass(18)??????+atmfVccReceiveQOSClass(19)ꆤ205ꆤ
뫳??볇ퟷ헟폚1984쓪퓚죕놾뚫뺩듳톧뾪쪼쇋ISDN뫍뿬쯙럖ퟩ붻뮻뗄룺ퟙ폫퇐뺿ꆣ80쓪듺쒩믘맺,폐탒뗃떽맺볒ퟔ좻뿆톧믹뷰뗄훺,늢퓚냋컥릥맘뫍냋쇹죽춨탅쿮쒿훐돐떣쇋B?ISDN뗄폐맘쳢뫍뿎쳢,쪹퇐뺿릤ퟷ짮죫돖탸뗘뾪햹쿂좥ꆣ퓚듋믹뒡짏컒쏇쿈뫳돶냦쇋ꆶퟛ뫏튵컱쫽ퟖ췸ISDNꆷ(훐맺뿆벼듳톧돶냦짧,1990쓪,첨췥죥쇖춼쫩릫쮾,1992쓪)뫍ꆶISDN&ATMꆷ(훐맺뿆벼듳톧돶냦짧,1993쓪)ꆣ뻅컥웚볤,컒쏇볌탸뗃떽쇋맺볒뿆캯뫍폊뗧늿뗄늿쏅쇬떼ꆢ냋쇹죽춨탅볒ퟩ뫍뻅컥릥맘뗄퓰죎볒뗄횧돖,뷸탐ATM쪵폃뮯뗄퇐뺿ꆣ놾쫩헽쫇퓚헢튻놳뺰쿂떮짺뗄,쯼볈쫇잰뛾늿훸ퟷ뗄탸욪,튲쫇ퟷ헟뛔ATM벼쫵죏쪶뗄튻룶뷗뛎탔ퟜ뷡ꆣ좫쫩릲럖8헂,웤훐뗚1,3,6뫍8헂평뫩엥쇕횴뇊,뗚2헂평돂틢퓆횴뇊,샮뷲짺췪돉웤폠룷헂뗄킴뫍좫쫩뗄춳룥ꆣ퓚놾쫩돶냦횮볊,컒쏇헦돏뗘룐킻횧돖컒쏇퇐뺿릤ퟷ뗄룷캻쇬떼뫍볒,춬쪱뮹튪룐킻죕놾횥웖릤튵듳톧쟯즽뷌쫚(풭뚫뺩듳톧뷌쫚)ꆢ퓧떾쳯듳톧쳯훐솼쏷뷌쫚(풭뚫뺩듳톧뢱뷌쫚)ꆢNTT춨탅퇐뺿쯹쮮퓳뒿튻쳘뇰퇐뺿쫒쮮퓳뒿튻쫒뎤(풭뚫뺩듳톧뢱뷌쫚)뫍NEC쫽뻝춨탅쫂튵늿쟯튶쿍튻늿뎤,쯻쏇뛔놾쫩뗄쓚죝낲업쳡돶쇋놦맳뗄틢볻늢쳡릩쇋탭뛠폐볛횵뗄쇏ꆣ죕놾뫣탇릫쮾뫍훐맺뿆벼듳톧뫣탇릫쮾뛔ퟷ헟뗄퇐뺿뫍톧쫵릤ퟷ(냼삨훸쫩)룸폨쇋좫쏦뗄냯훺,컒쏇뇭쪾훔탄뗄킻틢ꆣ컒쏇쳘뇰룐킻쟥뮪듳톧뗧ퟓ릤돌쾵퇮캪샭뷌쫚뛔놾쫩뗄냯훺ꆣ훐맺뿆벼듳톧뗄훬?뫍첸쫧펢뛾캻샏쪦ퟶ쇋탭뛠뻟쳥릤ퟷ,컒쏇짮뇭킻틢ꆣퟷ??헟1997쓪4퓂폚뫏럊훐맺뿆벼듳톧뗧ퟓ릤돌폫탅쾢뿆톧쾵E?mail뗘횷:plhong@춼7?60?LAN럂헦랽쪽쿂뗄ATM뗘횷뮻맦돌뫍훕뛋볤뗄춨탅맦돌ꆤ206ꆤ
