Knowledge (XXG)

Automatic number identification

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is activated. The destination telephone company switching office can relay the originating telephone number to ANI delivery services subscribers. Toll-free subscribers and large companies normally have access to ANI, either instantly via installed equipment, or from a monthly billing statement.
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and provide unique service. DNIS can also be used to identify other call routing information. For example, toll-free service can be configured to send a specific DNIS number that is assigned to callers from geographic regions based on city, area code, state, or country.
118:, a test facility of a central office for telephone installation technicians. The service, which is not advertised to the public, allows an installer to identify a line by dialing a telephone number. Such numbers are typically assigned in a 90:
such as +1-800, 888, 877, 866, 855, 844, and 833 with 822 reserved for future toll free use (United States and Canada), 1800 (Australia) or 0800 and 0808 (United Kingdom).
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subscribers. It transmits information about the destination number, which a service provider can use to have several toll-free numbers directed to the same
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ANI is conceptually and technically different from caller ID service. A caller's telephone number and line type are captured by ANI service even if
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ANI is generally not transmitted when a call is operator assisted; only the area code of the last switch to route the call is sent.
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Residential subscribers can obtain access to ANI information through third party companies that charge for the service.
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on toll calls for billing purposes. Automatic number identification was originally created by the
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Modern ANI has two components: information digits, which identify the class of service, and the
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services, such as call display, which are solely for informing a subscriber.
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service, depend on ANI to track inbound calls to numbers in special
1315: 1252: 560: 1257: 361: 321:. Atlantic Publishers and Distributors LTD. 2007. p. 142. 503: 240:
US Patent 2,265,844: Calling Line Identification Circuit
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US Patent 2,300,829: Calling Line Identification System
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A Practical Guide to Call Center Technology. p315. 294:"TrapCall Displays Blocked Numbers on Your Caller ID" 1339: 1276: 1198: 1162: 1119: 1060: 994: 703: 395: 52:The term is also used to describe the functions of 133:(DNIS) is a related service feature available to 373: 187: 185: 122:(such as 958-xxxx in much of North America). 8: 267:North American Numbering Plan Administration 1388:Global telecommunications regulation bodies 1424: 380: 366: 358: 32:American Telephone and Telegraph Company 181: 16:Feature of a telecommunications network 319:Encyclopedia of Information Technology 194:"Caller ID: Consumer's Friend or Foe?" 120:a range reserved for testing purposes 59:that identify the transmitting user. 7: 1434: 221:"The Pizza Version of Dialing '911'" 131:Dialed Number Identification Service 292:Fallon, Sean (February 17, 2009). 273:from the original on June 18, 2007 14: 192:Anthony Ramirez (April 4, 1992). 1433: 1423: 1414: 1413: 1402: 1023:Free-space optical communication 20:Automatic number identification 1: 116:automatic number announcement 110:Automatic number announcement 1409:Telecommunication portal 1190:Telecommunications equipment 926:Alexander Stepanovich Popov 153:Calling Line Identification 76:toll-free telephone numbers 70:Toll-free telephone numbers 62:ANI is distinct from newer 1481: 630:Telecommunications history 163:Caller Line Identification 49:billing telephone number. 1397: 1238:Public Switched Telephone 1050:telecommunication circuit 1011:Fiber-optic communication 756:Francis Blake (telephone) 551:Optical telecommunication 1149:Orbital angular-momentum 586:Satellite communications 425:Communications satellite 1028:Molecular communication 851:Gardiner Greene Hubbard 680:Undersea telegraph line 415:Cable protection system 135:private branch exchange 114:ANI is used to provide 1170:Communication protocol 956:Charles Sumner Tainter 771:Walter Houser Brattain 716:Edwin Howard Armstrong 524:Information revolution 1144:Polarization-division 876:Narinder Singh Kapany 841:Erna Schneider Hoover 761:Jagadish Chandra Bose 741:Alexander Graham Bell 472:online video platform 986:Vladimir K. Zworykin 946:Almon Brown Strowger 916:Charles Grafton Page 571:Prepaid mobile phone 499:Electrical telegraph 229:. September 9, 1991. 936:Johann Philipp Reis 695:Wireless revolution 657:The Telephone Cases 514:Hydraulic telegraph 346:>Waite, Archived 1134:Frequency-division 1111:Telephone exchange 981:Charles Wheatstone 911:Jun-ichi Nishizawa 886:Innocenzo Manzetti 821:Reginald Fessenden 556:Optical telegraphy 389:Telecommunications 348:2014-06-28 at the 226:The New York Times 199:The New York Times 100:caller ID blocking 1465:Telephony signals 1447: 1446: 1185:Store and forward 1180:Data transmission 1094:Network switching 1045:Transmission line 891:Guglielmo Marconi 856:Internet pioneers 721:Mohamed M. Atalla 690:Whistled language 342:>Waite, Andrew 328:978-81-269-0752-6 57:selective calling 1472: 1437: 1436: 1427: 1426: 1417: 1416: 1407: 1406: 1405: 1278:Notable networks 1268:Wireless network 1208:Cellular network 1200:Types of network 1175:Computer network 1062:Network topology 976:Thomas A. Watson 831:Oliver Heaviside 816:Philo Farnsworth 791:Daniel Davis Jr. 766:Charles Bourseul 726:John Logie Baird 435:Data compression 430:Computer network 382: 375: 368: 359: 352: 339: 333: 332: 315: 309: 308: 306: 304: 289: 283: 282: 280: 278: 259: 253: 248: 242: 237: 231: 230: 217: 211: 210: 208: 206: 189: 146:Similar services 28:telephone number 1480: 1479: 1475: 1474: 1473: 1471: 1470: 1469: 1450: 1449: 1448: 1443: 1403: 1401: 1393: 1335: 1272: 1194: 1158: 1115: 1064: 1056: 997: 990: 896:Robert Metcalfe 751:Tim Berners-Lee 699: 519:Information Age 391: 386: 356: 355: 350:Wayback Machine 340: 336: 329: 317: 316: 312: 302: 300: 291: 290: 286: 276: 274: 263:"ANI II Digits" 261: 260: 256: 249: 245: 238: 234: 219: 218: 214: 204: 202: 191: 190: 183: 178: 148: 128: 112: 96: 72: 38:service in the 34:(AT&T) for 17: 12: 11: 5: 1478: 1476: 1468: 1467: 1462: 1452: 1451: 1445: 1444: 1442: 1441: 1431: 1421: 1411: 1398: 1395: 1394: 1392: 1391: 1384: 1379: 1374: 1369: 1364: 1363: 1362: 1357: 1349: 1343: 1341: 1337: 1336: 1334: 1333: 1328: 1323: 1318: 1313: 1308: 1303: 1298: 1293: 1288: 1282: 1280: 1274: 1273: 1271: 1270: 1265: 1260: 1255: 1250: 1245: 1240: 1235: 1230: 1225: 1220: 1215: 1210: 1204: 1202: 1196: 1195: 1193: 1192: 1187: 1182: 1177: 1172: 1166: 1164: 1160: 1159: 1157: 1156: 1151: 1146: 1141: 1136: 1131: 1129:Space-division 1125: 1123: 1117: 1116: 1114: 1113: 1108: 1107: 1106: 1101: 1091: 1090: 1089: 1079: 1074: 1068: 1066: 1058: 1057: 1055: 1054: 1053: 1052: 1042: 1041: 1040: 1030: 1025: 1020: 1019: 1018: 1008: 1002: 1000: 992: 991: 989: 988: 983: 978: 973: 968: 966:Camille Tissot 963: 958: 953: 948: 943: 941:Claude Shannon 938: 933: 931:Tivadar Puskás 928: 923: 918: 913: 908: 903: 901:Antonio Meucci 898: 893: 888: 883: 878: 873: 871:Charles K. Kao 868: 863: 858: 853: 848: 846:Harold Hopkins 843: 838: 833: 828: 823: 818: 813: 808: 803: 798: 793: 788: 783: 778: 773: 768: 763: 758: 753: 748: 746:Emile Berliner 743: 738: 733: 728: 723: 718: 713: 707: 705: 701: 700: 698: 697: 692: 687: 685:Videotelephony 682: 677: 676: 675: 670: 660: 653: 648: 642: 637: 632: 627: 622: 621: 620: 615: 610: 600: 599: 598: 588: 583: 581:Radiotelephone 578: 573: 568: 563: 558: 553: 548: 547: 546: 536: 531: 526: 521: 516: 511: 506: 501: 496: 491: 486: 485: 484: 479: 474: 469: 467:Internet video 459: 458: 457: 452: 447: 442: 432: 427: 422: 417: 412: 407: 401: 399: 393: 392: 387: 385: 384: 377: 370: 362: 354: 353: 334: 327: 310: 284: 254: 243: 232: 212: 180: 179: 177: 174: 173: 172: 166: 159:United Kingdom 156: 147: 144: 127: 124: 111: 108: 95: 92: 71: 68: 15: 13: 10: 9: 6: 4: 3: 2: 1477: 1466: 1463: 1461: 1458: 1457: 1455: 1440: 1432: 1430: 1422: 1420: 1412: 1410: 1400: 1399: 1396: 1389: 1385: 1383: 1380: 1378: 1375: 1373: 1370: 1368: 1365: 1361: 1358: 1356: 1353: 1352: 1350: 1348: 1345: 1344: 1342: 1338: 1332: 1329: 1327: 1324: 1322: 1319: 1317: 1314: 1312: 1309: 1307: 1304: 1302: 1299: 1297: 1294: 1292: 1289: 1287: 1284: 1283: 1281: 1279: 1275: 1269: 1266: 1264: 1261: 1259: 1256: 1254: 1251: 1249: 1246: 1244: 1241: 1239: 1236: 1234: 1231: 1229: 1226: 1224: 1221: 1219: 1216: 1214: 1211: 1209: 1206: 1205: 1203: 1201: 1197: 1191: 1188: 1186: 1183: 1181: 1178: 1176: 1173: 1171: 1168: 1167: 1165: 1161: 1155: 1154:Code-division 1152: 1150: 1147: 1145: 1142: 1140: 1139:Time-division 1137: 1135: 1132: 1130: 1127: 1126: 1124: 1122: 1118: 1112: 1109: 1105: 1102: 1100: 1097: 1096: 1095: 1092: 1088: 1085: 1084: 1083: 1080: 1078: 1075: 1073: 1070: 1069: 1067: 1065:and switching 1063: 1059: 1051: 1048: 1047: 1046: 1043: 1039: 1036: 1035: 1034: 1031: 1029: 1026: 1024: 1021: 1017: 1016:optical fiber 1014: 1013: 1012: 1009: 1007: 1006:Coaxial cable 1004: 1003: 1001: 999: 993: 987: 984: 982: 979: 977: 974: 972: 969: 967: 964: 962: 959: 957: 954: 952: 949: 947: 944: 942: 939: 937: 934: 932: 929: 927: 924: 922: 921:Radia Perlman 919: 917: 914: 912: 909: 907: 904: 902: 899: 897: 894: 892: 889: 887: 884: 882: 879: 877: 874: 872: 869: 867: 864: 862: 859: 857: 854: 852: 849: 847: 844: 842: 839: 837: 834: 832: 829: 827: 824: 822: 819: 817: 814: 812: 811:Lee de Forest 809: 807: 806:Thomas Edison 804: 802: 799: 797: 796:Donald Davies 794: 792: 789: 787: 784: 782: 781:Claude Chappe 779: 777: 774: 772: 769: 767: 764: 762: 759: 757: 754: 752: 749: 747: 744: 742: 739: 737: 734: 732: 729: 727: 724: 722: 719: 717: 714: 712: 709: 708: 706: 702: 696: 693: 691: 688: 686: 683: 681: 678: 674: 671: 669: 666: 665: 664: 661: 659: 658: 654: 652: 649: 646: 643: 641: 638: 636: 633: 631: 628: 626: 625:Smoke signals 623: 619: 616: 614: 611: 609: 606: 605: 604: 603:Semiconductor 601: 597: 594: 593: 592: 589: 587: 584: 582: 579: 577: 574: 572: 569: 567: 564: 562: 559: 557: 554: 552: 549: 545: 542: 541: 540: 537: 535: 532: 530: 527: 525: 522: 520: 517: 515: 512: 510: 507: 505: 502: 500: 497: 495: 492: 490: 487: 483: 480: 478: 475: 473: 470: 468: 465: 464: 463: 462:Digital media 460: 456: 453: 451: 448: 446: 443: 441: 438: 437: 436: 433: 431: 428: 426: 423: 421: 418: 416: 413: 411: 408: 406: 403: 402: 400: 398: 394: 390: 383: 378: 376: 371: 369: 364: 363: 360: 351: 347: 343: 338: 335: 330: 324: 320: 314: 311: 299: 295: 288: 285: 272: 268: 264: 258: 255: 252: 247: 244: 241: 236: 233: 228: 227: 222: 216: 213: 205:September 21, 201: 200: 195: 188: 186: 182: 175: 170: 167: 164: 160: 157: 154: 150: 149: 145: 143: 140: 136: 132: 125: 123: 121: 117: 109: 107: 104: 101: 93: 91: 89: 85: 81: 77: 69: 67: 65: 60: 58: 55: 54:two-way radio 50: 48: 47:calling party 43: 41: 37: 36:long distance 33: 29: 25: 21: 1121:Multiplexing 996:Transmission 961:Nikola Tesla 951:Henry Sutton 906:Samuel Morse 836:Robert Hooke 801:Amos Dolbear 736:John Bardeen 655: 635:Telautograph 539:Mobile phone 494:Edholm's law 477:social media 410:Broadcasting 337: 318: 313: 301:. Retrieved 297: 287: 275:. Retrieved 257: 246: 235: 224: 215: 203:. Retrieved 197: 129: 113: 105: 97: 82:'s original 73: 61: 51: 44: 23: 19: 18: 1321:NPL network 1033:Radio waves 971:Alfred Vail 881:Hedy Lamarr 866:Dawon Kahng 826:Elisha Gray 786:Yogen Dalal 711:Nasir Ahmed 645:Teleprinter 509:Heliographs 139:call center 84:Inward WATS 80:Bell System 40:Bell System 1454:Categories 1367:Antarctica 1326:Toasternet 1248:Television 731:Paul Baran 663:Television 647:(teletype) 640:Telegraphy 618:transistor 596:Phryctoria 566:Photophone 544:Smartphone 534:Mass media 176:References 88:area codes 1460:Anonymity 1351:Americas 1340:Locations 1311:Internet2 1072:Bandwidth 776:Vint Cerf 673:streaming 651:Telephone 591:Semaphore 482:streaming 169:Australia 64:caller ID 1419:Category 1306:Internet 1296:CYCLADES 1213:Ethernet 1163:Concepts 1087:terminal 1038:wireless 861:Bob Kahn 704:Pioneers 529:Internet 420:Cable TV 303:June 26, 271:Archived 269:. 2003. 151:Europe: 1439:Commons 1429:Outline 1382:Oceania 1301:FidoNet 1286:ARPANET 1099:circuit 668:digital 397:History 298:Gizmodo 277:July 6, 94:Privacy 74:Modern 1377:Europe 1347:Africa 1331:Usenet 1291:BITNET 1228:Mobile 1104:packet 613:MOSFET 608:device 405:Beacon 325:  165:(CLID) 1360:South 1355:North 1316:JANET 1253:Telex 1243:Radio 1082:Nodes 1077:Links 998:media 576:Radio 561:Pager 489:Drums 455:video 450:image 440:audio 155:(CLI) 1372:Asia 1258:UUCP 1218:ISDN 323:ISBN 305:2021 279:2007 207:2022 126:DNIS 1263:WAN 1233:NGN 1223:LAN 504:Fax 445:DCT 24:ANI 1456:: 296:. 265:. 223:. 196:. 184:^ 161:: 1390:) 1386:( 381:e 374:t 367:v 331:. 307:. 281:. 209:. 22:(

Index

telephone number
American Telephone and Telegraph Company
long distance
Bell System
calling party
two-way radio
selective calling
caller ID
toll-free telephone numbers
Bell System
Inward WATS
area codes
caller ID blocking
automatic number announcement
a range reserved for testing purposes
Dialed Number Identification Service
private branch exchange
call center
Calling Line Identification
United Kingdom
Caller Line Identification
Australia


"Caller ID: Consumer's Friend or Foe?"
The New York Times
"The Pizza Version of Dialing '911'"
The New York Times
US Patent 2,265,844: Calling Line Identification Circuit
US Patent 2,300,829: Calling Line Identification System

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