47:
104:
367:
284:
112:
462:
Flooded conditions: These cover areas of a service provider prone to flooding, such as in coastal or flood plain locations. After a flooding incident, temperature is expected to be in the range of 4.5 to 38 °C (40 to 100 °F), and humidity may exceed 90% RH. The requirements are not to
459:
109 °F), and humidity may exceed 90% RH. Jacks installed in NIDs in such environments are known to become contaminated and develop low insulation resistances and low dielectric breakdown voltages when subjected to high humidity. These problems can cause noisy lines or even service outages.
233:
In its role as the demarcation point (dividing line), the NID separates the telephone company's equipment from the customer's wiring and equipment. The telephone company owns the NID and all wiring up to it. Anything past the NID is the customer's responsibility. To facilitate this, there is
458:
Severe climatic conditions: These cover environments more severe than those of a normal environment (i.e., higher humidity, high lightning activity, exposure to salt-laden atmosphere, and exposure to contaminants). Temperatures are expected to be in the range of −40 to 43 °C (−40 to
454:
Normal conditions: This refers to a normal environment that is expected in most areas of any service provider. Temperatures are expected to be in the range of −20 to 32 °C (−4 to 90 °F), and humidity is expected to be less than 90% RH. No unusual contamination is
348:, without the need to have test equipment at the customer site. The telephone company usually has the ability to remotely activate loopback, without even needing personnel at the customer site. When looped back, the customer equipment is disconnected from the line.
242:
into the jack to isolate trouble. If the telephone works at the test jack, the problem is the customer's wiring, and the customer is responsible for repair. If the telephone does not work, the line is faulty and the telephone company is responsible for repair.
355:, which reports trouble at one end of the line to the far end. This helps the telephone company know if trouble is present in the line, the smartjack, or customer equipment. Indicator lights to show configuration, status, and alarms are also common.
307:(INIDs) as an indication of their built-in "intelligence", as opposed to a simple NID, which is just a wiring device. Smartjacks are typically used for more complicated types of telecommunications service, such as
153:. Outdoor telephone NIDs also provide the subscriber with access to the station wiring and serve as a convenient test point for verification of loop integrity and of the subscriber's inside wiring.
230:
will enter the NID and be connected to one side. The customer connects their wiring to the other side. A single NID enclosure may contain termination for a single line or multiple lines.
333:, framing types, to the type needed by the customer equipment. It may buffer and/or regenerate the signal, to compensate for signal degradation from line transmission, similar to what a
378:
technologies. Unlike many conventional telephone technologies, this does not provide power for premises equipment, nor is it suitable for direct connection to customer equipment. An
563:
549:
358:
Smartjacks typically derive their operating power from the telephone line, rather than relying on premises electrical power, although this is not a universal rule.
679:
344:, such that the signal from the telephone company is transmitted back to the telephone company. This allows the company to test the line from the central
399:
601:
660:
580:
17:
463:
determine if the NID will function during a flood, but to review the ability of the NID to function after the flood has subsided.
567:
269:. They have no capabilities beyond wiring termination, circuit protection, and providing a place to connect test equipment.
304:
278:
642:
299:
Several types of NIDs provide more than just a terminal for the connection of wiring. Such NIDs are colloquially called
235:
90:
68:
61:
186:
418:), and provide power to customer telephones. If the device combines all these services into one it is known as an
422:. As the ONT must derive its power from the customer premises electrical supply, many ONTs have the option for a
117:
234:
typically a test jack inside the NID. Accessing the test jack disconnects the customer premises wiring from the
222:. These will typically take the form of a small, weather-proof box, mounted on the outside of the building. The
704:
340:
Smartjacks also typically provide diagnostic capabilities. A very common capability provided by a smartjack is
450:
GR-49 requirements for telecommunications, NIDs vary based on three categories of environmental conditions:
714:
35:
486:
312:
438:. An ONT can work in Single Family Unit/SFU mode (modem/bridge) or Home Gateway Unit/HGU mode (router).
521:
227:
181:
431:
419:
55:
31:
605:
506:
435:
352:
319:
250:
for a telephone line. They protect customer wiring, equipment, and personnel from any transient
501:
219:
72:
323:
197:
is a type of NID with capabilities beyond simple electrical connection, such as diagnostics.
476:
374:
In fiber-to-the-premises systems, the signal is transmitted to the customer premises using
664:
8:
709:
661:"Testing, Repairing and Installing Home telephone Wiring – Network Interface Device"
516:
511:
541:
491:
345:
150:
130:
496:
370:
An optical network terminal mounted to the outside of a building, with the cover open
142:
122:
103:
583:
Generic
Requirements for Outdoor Telecommunication Network Interface Devices (NIDs)
423:
308:
288:
415:
247:
620:
223:
207:
635:
698:
375:
467:
Service providers must decide which condition best suits their application.
427:
403:
329:
A smartjack may provide signal conversion, converting codes and protocols,
259:
366:
283:
411:
266:
146:
107:
Two simple NIDs, carrying six lines each, on the outside of a building
447:
407:
255:
239:
141:; also known by several other names) is a device that serves as the
341:
334:
292:
218:
The simplest NIDs are essentially just a specialized set of wiring
481:
251:
111:
318:
Despite the name, most smartjacks are much more than a simple
27:
Device that separates the carrier's wiring from the customer's
387:
680:"Checking the service at the Optical Network Terminal (ONT)"
550:
663:. Public Service Commission of Wisconsin. Archived from
326:
with a face plate on one edge, mounted in an enclosure.
246:
Most NIDs also include "circuit protectors", which are
426:
backup in order to maintain service in the event of a
636:"Functional Criteria for the DS1 Interface Connector"
351:
Additional smartjack diagnostic capabilities include
402:
term), is used to terminate the optical fiber line,
315:
lines generally cannot be equipped with smartjacks.
265:Simple NIDs are "dumb" devices, as they contain no
115:A German copper phone line termination box called
696:
238:and allows the customer to plug a "known good"
202:
604:. Verizon Communications, Inc. Archived from
566:. Verizon Communications, Inc. Archived from
564:"What is an Optical Network Terminal (ONT)?"
361:
441:
406:the signal into its component parts (voice
161:Generically, an NID may also be called a
91:Learn how and when to remove this message
574:
365:
282:
110:
102:
54:This article includes a list of general
534:
322:. One common form for a smartjack is a
14:
697:
556:
621:"Network Interface Device (NID) V9.0"
593:
305:Intelligent Network Interface Devices
213:
623:. Qwest Communications International
279:Intelligent Network Interface Device
40:
430:. These terminals are used in both
24:
60:it lacks sufficient corresponding
25:
726:
236:public switched telephone network
206:(ONT) is a type of NID used with
45:
648:from the original on 2022-10-09
13:
1:
682:. Verizon Communications, Inc
527:
291:circuits, in two shelves; a
272:
254:on the line, such as from a
118:Abschlusspunkt LinienTechnik
36:Network interface controller
7:
487:Customer-premises equipment
470:
313:Plain old telephone service
167:telephone network interface
10:
731:
602:"Network Interface Device"
542:"network interface device"
276:
187:network termination device
182:National Broadband Network
29:
362:Optical network terminals
156:
641:. BellSouth. June 1993.
442:Environmental conditions
436:passive optical networks
390:term), also known as an
380:optical network terminal
203:optical network terminal
171:system network interface
135:network interface device
32:Network Device Interface
30:Not to be confused with
18:Optical Network Terminal
507:Main distribution frame
432:active optical networks
353:alarm indication signal
75:more precise citations.
546:Federal Standard 1037C
522:User–network interface
502:Local exchange carrier
371:
296:
163:network interface unit
145:between the carrier's
126:
108:
705:Fiber to the premises
369:
324:printed circuit board
287:Three smartjacks for
286:
208:fiber-to-the-premises
175:telephone network box
114:
106:
477:Channel service unit
392:optical network unit
715:Telephony equipment
517:Point of appearance
512:Network termination
149:and the customer's
594:General references
492:On-premises wiring
372:
346:telephone exchange
297:
214:Wiring termination
131:telecommunications
127:
109:
548:. United States:
497:Data service unit
228:telephone company
143:demarcation point
123:Demarcation point
101:
100:
93:
16:(Redirected from
722:
690:
688:
687:
675:
673:
672:
656:
654:
653:
647:
640:
631:
629:
628:
616:
614:
613:
587:
578:
572:
571:
560:
554:
553:
538:
248:surge protectors
96:
89:
85:
82:
76:
71:this article by
62:inline citations
49:
48:
41:
21:
730:
729:
725:
724:
723:
721:
720:
719:
695:
694:
693:
685:
683:
678:
670:
668:
659:
651:
649:
645:
638:
634:
626:
624:
619:
611:
609:
600:
596:
591:
590:
579:
575:
562:
561:
557:
540:
539:
535:
530:
473:
444:
416:Internet access
364:
281:
275:
216:
159:
151:premises wiring
97:
86:
80:
77:
67:Please help to
66:
50:
46:
39:
28:
23:
22:
15:
12:
11:
5:
728:
718:
717:
712:
707:
692:
691:
676:
657:
632:
617:
597:
595:
592:
589:
588:
573:
570:on 2012-10-06.
555:
532:
531:
529:
526:
525:
524:
519:
514:
509:
504:
499:
494:
489:
484:
479:
472:
469:
465:
464:
460:
456:
443:
440:
363:
360:
320:telephone jack
295:is on the left
277:Main article:
274:
271:
224:telephone line
215:
212:
210:applications.
184:uses the term
158:
155:
99:
98:
53:
51:
44:
26:
9:
6:
4:
3:
2:
727:
716:
713:
711:
708:
706:
703:
702:
700:
681:
677:
667:on 2009-05-11
666:
662:
658:
644:
637:
633:
622:
618:
608:on 2016-09-15
607:
603:
599:
598:
585:
584:
577:
569:
565:
559:
552:. 1996-08-23.
551:
547:
543:
537:
533:
523:
520:
518:
515:
513:
510:
508:
505:
503:
500:
498:
495:
493:
490:
488:
485:
483:
480:
478:
475:
474:
468:
461:
457:
453:
452:
451:
449:
446:According to
439:
437:
433:
429:
425:
421:
417:
413:
409:
405:
401:
397:
393:
389:
385:
381:
377:
376:optical fiber
368:
359:
356:
354:
349:
347:
343:
338:
336:
332:
327:
325:
321:
316:
314:
310:
306:
302:
294:
290:
285:
280:
270:
268:
267:digital logic
263:
261:
257:
253:
249:
244:
241:
237:
231:
229:
225:
221:
211:
209:
205:
204:
198:
196:
191:
189:
188:
183:
178:
176:
172:
168:
164:
154:
152:
148:
144:
140:
136:
132:
124:
120:
119:
113:
105:
95:
92:
84:
74:
70:
64:
63:
57:
52:
43:
42:
37:
33:
19:
684:. Retrieved
669:. Retrieved
665:the original
650:. Retrieved
625:. Retrieved
610:. Retrieved
606:the original
586:, Telcordia.
582:
576:
568:the original
558:
545:
536:
466:
445:
428:power outage
395:
391:
383:
379:
373:
357:
350:
339:
330:
328:
317:
300:
298:
264:
260:utility pole
258:strike to a
245:
232:
217:
201:
199:
194:
192:
185:
180:Australia's
179:
174:
170:
166:
162:
160:
138:
134:
128:
116:
87:
78:
59:
581:GR-49-CORE
404:demultiplex
73:introducing
710:Local loop
699:Categories
686:2009-06-03
671:2009-06-03
652:2009-06-03
627:2009-06-03
612:2009-06-03
412:television
301:smartjacks
173:(SNI), or
147:local loop
56:references
528:Citations
455:expected.
448:Telcordia
408:telephone
273:Smartjack
256:lightning
240:telephone
226:from the
220:terminals
195:smartjack
81:June 2010
643:Archived
471:See also
342:loopback
335:repeater
309:T1 lines
293:66 block
190:or NTD.
482:CSU/DSU
424:battery
169:(TNI),
165:(NIU),
121:(APL, "
69:improve
414:, and
337:does.
252:energy
157:Naming
58:, but
646:(PDF)
639:(PDF)
398:, an
388:ITU-T
386:, an
434:and
400:IEEE
331:e.g.
133:, a
420:IAD
396:ONU
384:ONT
303:or
289:T-1
200:An
139:NID
129:In
34:or
701::
544:.
410:,
311:.
262:.
193:A
177:.
125:")
689:.
674:.
655:.
630:.
615:.
394:(
382:(
137:(
94:)
88:(
83:)
79:(
65:.
38:.
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
