Knowledge

2B1Q

Source 📝

260: 498: 563: 539: 210: 43: 35: 568: 404: 142:
If the voltage is misread as an adjacent level, this causes only a 1-bit error in the decoded data. 2B1Q code is not
302: 287: 292: 282: 409: 176: 338: 378: 532: 460: 203: 47: 55: 450: 455: 525: 188: 466: 196: 69:
A competing encoding technique in the ISDN basic rate U interface, mainly used in Europe, is
51: 472: 445: 348: 39: 8: 558: 477: 358: 318: 505: 343: 259: 234: 172: 165: 82: 373: 239: 368: 297: 509: 440: 383: 363: 353: 277: 249: 513: 552: 244: 219: 143: 59: 31: 497: 269: 90: 63: 27: 435: 425: 388: 218: 99: 86: 430: 328: 323: 70: 171:. IEEE Telecommunications Handbook Series. IEEE Press. 167:
Subscriber Loop Signaling and Transmission Handbook
164: 550: 89:) are assigned to voltage levels according to a 50:(PAM-4) scheme without redundancy, mapping two 533: 204: 540: 526: 211: 197: 551: 303:Differential Manchester/biphase (Bi-φ) 283:Non-return-to-zero, level (NRZ/NRZ-L) 192: 162: 44:high-bit-rate digital subscriber line 492: 288:Non-return-to-zero, inverted (NRZ-I) 564:Integrated Services Digital Network 36:Integrated Services Digital Network 13: 14: 580: 405:Carrier-suppressed return-to-zero 293:Non-return-to-zero, space (NRZ-S) 496: 258: 222:(digital baseband transmission) 410:Alternate-phase return-to-zero 156: 1: 149: 46:(HDSL). 2B1Q is a four-level 512:. You can help Knowledge by 379:Eight-to-fourteen modulation 7: 76: 10: 585: 491: 461:Pulse-amplitude modulation 163:Reeve, Whitham D. (1995). 48:pulse-amplitude modulation 20:Two-binary, one-quaternary 418: 397: 311: 267: 256: 227: 569:Telecommunications stubs 504:This article related to 456:Pulse modulation methods 339:Alternate mark inversion 451:Ethernet physical layer 467:Pulse-code modulation 384:Delay/Miller encoding 473:Serial communication 446:Digital transmission 349:Coded mark inversion 40:Basic Rate Interface 478:Category:Line codes 359:Hybrid ternary code 319:Conditioned diphase 312:Extended line codes 278:Return to zero (RZ) 506:telecommunications 398:Optical line codes 521: 520: 486: 485: 344:Modified AMI code 235:Unipolar encoding 140: 139: 83:error propagation 576: 542: 535: 528: 500: 493: 374:64b/66b encoding 262: 240:Bipolar encoding 213: 206: 199: 190: 189: 183: 182: 170: 160: 96: 95: 584: 583: 579: 578: 577: 575: 574: 573: 549: 548: 547: 546: 489: 487: 482: 414: 393: 369:8b/10b encoding 307: 263: 254: 223: 217: 187: 186: 179: 161: 157: 152: 79: 17: 12: 11: 5: 582: 572: 571: 566: 561: 545: 544: 537: 530: 522: 519: 518: 501: 484: 483: 481: 480: 475: 470: 464: 458: 453: 448: 443: 441:Digital signal 438: 433: 428: 419: 416: 415: 413: 412: 407: 401: 399: 395: 394: 392: 391: 386: 381: 376: 371: 366: 364:6b/8b encoding 361: 356: 354:MLT-3 encoding 351: 346: 341: 336: 331: 326: 321: 315: 313: 309: 308: 306: 305: 300: 295: 290: 285: 280: 274: 272: 265: 264: 257: 255: 253: 252: 250:Mark and space 247: 242: 237: 231: 229: 225: 224: 216: 215: 208: 201: 193: 185: 184: 177: 154: 153: 151: 148: 138: 137: 134: 130: 129: 126: 122: 121: 118: 114: 113: 110: 106: 105: 102: 93:, as follows: 78: 75: 54:(2B) into one 42:(BRI) and the 15: 9: 6: 4: 3: 2: 581: 570: 567: 565: 562: 560: 557: 556: 554: 543: 538: 536: 531: 529: 524: 523: 517: 515: 511: 507: 502: 499: 495: 494: 490: 479: 476: 474: 471: 468: 465: 462: 459: 457: 454: 452: 449: 447: 444: 442: 439: 437: 434: 432: 429: 427: 424: 421: 420: 417: 411: 408: 406: 403: 402: 400: 396: 390: 387: 385: 382: 380: 377: 375: 372: 370: 367: 365: 362: 360: 357: 355: 352: 350: 347: 345: 342: 340: 337: 335: 332: 330: 327: 325: 322: 320: 317: 316: 314: 310: 304: 301: 299: 296: 294: 291: 289: 286: 284: 281: 279: 276: 275: 273: 271: 266: 261: 251: 248: 246: 245:On-off keying 243: 241: 238: 236: 233: 232: 230: 228:Main articles 226: 221: 214: 209: 207: 202: 200: 195: 194: 191: 180: 174: 169: 168: 159: 155: 147: 145: 135: 132: 131: 127: 124: 123: 119: 116: 115: 111: 108: 107: 104:Signal level 103: 101: 98: 97: 94: 92: 88: 85:, bit pairs ( 84: 74: 72: 67: 65: 61: 58:symbol (1Q). 57: 53: 49: 45: 41: 37: 33: 29: 25: 21: 514:expanding it 503: 488: 422: 333: 166: 158: 141: 81:To minimize 80: 68: 30:used in the 23: 19: 18: 220:Line coding 144:DC-balanced 62:is half of 60:Symbol rate 32:U interface 559:Line codes 553:Categories 298:Manchester 270:line codes 178:0780304403 150:References 56:quaternary 423:See also: 91:Gray code 64:data rate 28:line code 16:Line code 436:Bit rate 426:Baseband 136:−450 mV 128:−150 mV 120:+150 mV 112:+450 mV 77:Encoding 38:(ISDN) 34:of the 26:) is a 389:TC-PAM 268:Basic 175:  87:dibits 508:is a 469:(PCM) 463:(PAM) 100:Dibit 510:stub 431:Baud 334:2B1Q 329:4B5B 324:4B3T 173:ISBN 71:4B3T 52:bits 24:2B1Q 146:. 555:: 133:00 125:01 117:11 109:10 73:. 66:. 541:e 534:t 527:v 516:. 212:e 205:t 198:v 181:. 22:(

Index

line code
U interface
Integrated Services Digital Network
Basic Rate Interface
high-bit-rate digital subscriber line
pulse-amplitude modulation
bits
quaternary
Symbol rate
data rate
4B3T
error propagation
dibits
Gray code
Dibit
DC-balanced
Subscriber Loop Signaling and Transmission Handbook
ISBN
0780304403
v
t
e
Line coding
Unipolar encoding
Bipolar encoding
On-off keying
Mark and space

line codes
Return to zero (RZ)

Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.