1118:
1083:
409:
1095:
108:
technologies are already being be phased out as BT, in common with many networks around the world, implements its next generation access network, which will ultimately be based predominantly on fibre to premises (FTTP), with voice services provided using
94:, and the multiplexing of customer lines over cabling to the AXE10 local switching unit. The AXE10 local switch uses a processor-controlled switch to route calls and data depending on the destination of the telephony transmission.
146:
71:
and later directly by
Ericsson. While System X exchanges were more widespread in BT's network, AXE10 (and subsequent versions) remain common in the classic BT
64:. The newly privatised BT brought in Ericsson as a competitive alternative supplier ending Plessey/GEC's monopoly on the provision of switching systems.
1068:
1063:
937:
167:
1159:
1178:
952:
143:
364:
344:
932:
886:
626:
199:
942:
780:
636:
631:
611:
72:
1058:
349:
57:
881:
238:
75:
until their eventual replacement when the network is closed, which at the time of the writing is expected to be in 2025
1152:
1043:
760:
621:
730:
616:
464:
1012:
676:
105:
735:
707:
248:
1188:
876:
861:
851:
97:
BT's AXE10 network, which has been in service since 1986, is maintained in house by its own engineers although
53:
130:
1145:
1038:
871:
444:
439:
263:
408:
770:
755:
725:
671:
661:
596:
192:
34:
750:
656:
581:
566:
294:
339:
67:
Initially, the AXE systems installed in the UK were partially locally manufactured in partnership with
1098:
967:
891:
641:
45:
1007:
775:
745:
601:
83:
61:
82:
switching equipment: the remote subscriber switch (RSS) and the AXE10 local switch. RSS acts as a
686:
651:
591:
586:
495:
243:
1183:
1086:
681:
666:
185:
79:
1129:
765:
646:
606:
1053:
150:
90:, which is the copper pairs between exchange buildings and customer premises, also called
856:
712:
500:
87:
27:
1172:
866:
740:
561:
384:
110:
101:
still provide high-level support, software upgrades and repairs at component level.
947:
815:
717:
530:
525:
520:
459:
434:
334:
324:
1117:
1028:
510:
354:
253:
233:
515:
505:
485:
309:
273:
91:
1125:
1033:
571:
490:
480:
278:
258:
68:
1002:
962:
901:
805:
576:
394:
389:
299:
208:
98:
31:
23:
86:
and deals with the conversion of analogue telephony signals used in the
972:
916:
911:
906:
846:
454:
379:
374:
369:
329:
316:
268:
49:
957:
800:
691:
359:
1048:
810:
795:
790:
785:
449:
41:
168:"Openreach Aim for 15 Million UK FTTP Broadband Premises by 2025"
304:
181:
982:
977:
40:
In the mid-1980s, British
Telecom chose the well established
177:
1133:
26:, the main operator of the telephone network in the
1021:
995:
925:
839:
828:
700:
554:
543:
473:
427:
416:
287:
226:
215:
131:"The UK's PSTN network will switch off in 2025"
1153:
193:
8:
1160:
1146:
836:
551:
424:
223:
200:
186:
178:
44:digital switch to provide competition for
1069:British Telecommunications plc v. Prodigy
1064:Young Scientist and Technology Exhibition
938:Digital Private Network Signalling System
56:(GEC) (companies later combined as GPT),
122:
60:and BT's state owned predecessor, the
953:International Packet Switched Service
7:
1114:
1112:
1094:
1132:. You can help Knowledge (XXG) by
933:Digital Access Signalling System 1
887:Digital Access Signalling System 2
627:National Network Management Centre
14:
943:Fixed-Mobile Convergence Alliance
637:Zouches Farm transmitting station
632:Peterborough transmitting station
104:AXE/System Y, System X and other
1116:
1093:
1082:
1081:
407:
350:Concert Communications Services
78:AXE10 covers two main types of
365:International Network Services
1:
882:Digital Access Carrier System
239:BT Business and Public Sector
48:developed by a consortium of
1179:Telephone exchange equipment
1044:BT Sport Action Woman Awards
761:Post Office Research Station
622:Madley Communications Centre
617:Guardian Exchange Manchester
731:Kingsway telephone exchange
22:is the terminology used by
1205:
1111:
1013:Electric Telegraph Company
677:Wotton-under-Edge BT Tower
37:digital switching system.
1077:
756:Sheffield Telephone House
736:Leafield Technical Centre
708:Anchor telephone exchange
405:
249:BT Wholesale and Ventures
1124:This article related to
877:Advanced Mobile Location
862:British telephone socket
852:BT site engineering code
54:General Electric Company
16:Digital switching system
1039:BT Digital Music Awards
872:Customer Service System
771:Criggion Radio Station
672:Tolsford Hill BT Tower
662:Sutton Common BT Tower
657:Stokenchurch BT Tower
582:BT Tower (Birmingham)
157:, accessed 2009-05-17
968:Packet Switch Stream
642:Heaton Park BT Tower
1008:General Post Office
776:Rugby Radio Station
746:Stag Lane Aerodrome
602:Charwelton BT Tower
144:"Digital Switching"
84:remote concentrator
687:KX telephone boxes
652:Pye Green BT Tower
612:Goonhilly Cornwall
592:BT Riverside Tower
587:BT Tower (Swansea)
496:BT Superfast Fibre
244:BT Global Services
149:2008-07-25 at the
30:, to refer to the
1141:
1140:
1109:
1108:
991:
990:
857:BT Speaking Clock
824:
823:
781:Microwave network
682:Red telephone box
667:Tinshill BT Tower
577:BT Tower (London)
539:
538:
403:
402:
319:
80:digital telephony
1196:
1162:
1155:
1148:
1120:
1113:
1097:
1096:
1085:
1084:
837:
766:Portishead Radio
647:Purdown BT Tower
607:Faraday Building
552:
425:
411:
314:
224:
202:
195:
188:
179:
172:
171:
164:
158:
141:
135:
134:
127:
1204:
1203:
1199:
1198:
1197:
1195:
1194:
1193:
1189:Telephony stubs
1169:
1168:
1167:
1166:
1110:
1105:
1073:
1054:Connected Earth
1017:
987:
921:
832:
830:
820:
696:
547:
545:
535:
469:
420:
418:
412:
399:
283:
219:
217:
211:
206:
176:
175:
166:
165:
161:
155:Connected Earth
151:Wayback Machine
142:
138:
129:
128:
124:
119:
17:
12:
11:
5:
1202:
1200:
1192:
1191:
1186:
1181:
1171:
1170:
1165:
1164:
1157:
1150:
1142:
1139:
1138:
1121:
1107:
1106:
1104:
1103:
1091:
1078:
1075:
1074:
1072:
1071:
1066:
1061:
1056:
1051:
1046:
1041:
1036:
1031:
1025:
1023:
1019:
1018:
1016:
1015:
1010:
1005:
999:
997:
993:
992:
989:
988:
986:
985:
980:
975:
970:
965:
960:
955:
950:
945:
940:
935:
929:
927:
923:
922:
920:
919:
914:
909:
904:
899:
894:
889:
884:
879:
874:
869:
864:
859:
854:
849:
843:
841:
834:
826:
825:
822:
821:
819:
818:
813:
808:
803:
798:
793:
788:
783:
778:
773:
768:
763:
758:
753:
748:
743:
738:
733:
728:
723:
715:
713:Bletchley Park
710:
704:
702:
698:
697:
695:
694:
689:
684:
679:
674:
669:
664:
659:
654:
649:
644:
639:
634:
629:
624:
619:
614:
609:
604:
599:
594:
589:
584:
579:
574:
569:
564:
558:
556:
549:
541:
540:
537:
536:
534:
533:
528:
523:
518:
513:
508:
503:
501:BT Versatility
498:
493:
488:
483:
477:
475:
471:
470:
468:
467:
462:
457:
452:
447:
442:
437:
431:
429:
422:
414:
413:
406:
404:
401:
400:
398:
397:
392:
387:
382:
377:
372:
367:
362:
357:
352:
347:
342:
337:
332:
327:
322:
321:
320:
307:
302:
297:
291:
289:
285:
284:
282:
281:
276:
271:
266:
261:
256:
251:
246:
241:
236:
230:
228:
221:
213:
212:
207:
205:
204:
197:
190:
182:
174:
173:
159:
136:
121:
120:
118:
115:
88:access network
28:United Kingdom
15:
13:
10:
9:
6:
4:
3:
2:
1201:
1190:
1187:
1185:
1182:
1180:
1177:
1176:
1174:
1163:
1158:
1156:
1151:
1149:
1144:
1143:
1137:
1135:
1131:
1127:
1122:
1119:
1115:
1102:
1101:
1092:
1090:
1089:
1080:
1079:
1076:
1070:
1067:
1065:
1062:
1060:
1057:
1055:
1052:
1050:
1047:
1045:
1042:
1040:
1037:
1035:
1032:
1030:
1027:
1026:
1024:
1020:
1014:
1011:
1009:
1006:
1004:
1001:
1000:
998:
994:
984:
981:
979:
976:
974:
971:
969:
966:
964:
961:
959:
956:
954:
951:
949:
946:
944:
941:
939:
936:
934:
931:
930:
928:
924:
918:
915:
913:
910:
908:
905:
903:
900:
898:
895:
893:
890:
888:
885:
883:
880:
878:
875:
873:
870:
868:
867:Cable jetting
865:
863:
860:
858:
855:
853:
850:
848:
845:
844:
842:
838:
835:
827:
817:
814:
812:
809:
807:
804:
802:
799:
797:
794:
792:
789:
787:
784:
782:
779:
777:
774:
772:
769:
767:
764:
762:
759:
757:
754:
752:
751:Marland House
749:
747:
744:
742:
741:Mondial House
739:
737:
734:
732:
729:
727:
726:Horwood House
724:
722:
721:
716:
714:
711:
709:
706:
705:
703:
699:
693:
690:
688:
685:
683:
680:
678:
675:
673:
670:
668:
665:
663:
660:
658:
655:
653:
650:
648:
645:
643:
640:
638:
635:
633:
630:
628:
625:
623:
620:
618:
615:
613:
610:
608:
605:
603:
600:
598:
597:Stadium House
595:
593:
590:
588:
585:
583:
580:
578:
575:
573:
570:
568:
567:Baynard House
565:
563:
562:Adastral Park
560:
559:
557:
553:
550:
542:
532:
529:
527:
524:
522:
519:
517:
514:
512:
509:
507:
504:
502:
499:
497:
494:
492:
489:
487:
484:
482:
479:
478:
476:
472:
466:
463:
461:
458:
456:
453:
451:
448:
446:
443:
441:
438:
436:
433:
432:
430:
426:
423:
415:
410:
396:
393:
391:
388:
386:
385:Swindon Cable
383:
381:
378:
376:
373:
371:
368:
366:
363:
361:
358:
356:
353:
351:
348:
346:
343:
341:
338:
336:
333:
331:
328:
326:
323:
318:
313:
312:
311:
308:
306:
303:
301:
298:
296:
293:
292:
290:
286:
280:
277:
275:
272:
270:
267:
265:
262:
260:
257:
255:
252:
250:
247:
245:
242:
240:
237:
235:
232:
231:
229:
225:
222:
214:
210:
203:
198:
196:
191:
189:
184:
183:
180:
170:. 9 May 2019.
169:
163:
160:
156:
152:
148:
145:
140:
137:
132:
126:
123:
116:
114:
113:technology.
112:
107:
102:
100:
95:
93:
89:
85:
81:
76:
74:
70:
65:
63:
59:
55:
51:
47:
43:
38:
36:
33:
29:
25:
21:
1134:expanding it
1123:
1099:
1087:
948:Go!Messenger
896:
816:UK-Belgium 5
719:
531:Merlin M4000
526:Micronet 800
521:Telecom Gold
460:BT Smart Hub
440:EE Broadband
435:BT Broadband
340:O2 (Germany)
335:O2 (Ireland)
325:Manx Telecom
315:merged into
220:subsidiaries
162:
154:
139:
125:
103:
96:
77:
66:
39:
19:
18:
1029:BT Archives
511:BT MyDonate
355:Telecomsoft
254:BT Research
234:BT Consumer
1173:Categories
829:Programmes
548:facilities
516:BT MyPlace
506:BT Voyager
486:BT Highway
465:TNT Sports
310:Madasafish
274:BT Ireland
117:References
92:local loop
1126:telephony
1034:BT Museum
833:standards
720:Sovereign
572:BT Centre
544:Buildings
491:BT Mobile
481:BT Fusion
445:EE Mobile
295:BT Marine
279:BT Italia
259:Openreach
216:Divisions
69:Thorn EMI
1184:BT Group
1088:Category
1003:BT Group
963:N3 (NHS)
902:ADSL Max
897:System Y
892:System X
806:CANTAT-2
421:services
417:Products
395:Open....
390:6GMOBILE
300:dabs.com
209:BT Group
147:Archived
99:Ericsson
46:System X
32:Ericsson
20:System Y
1100:Commons
996:History
973:Prestel
926:Defunct
917:YouView
912:1-5-7-1
907:Redcare
847:BT 21CN
840:Current
555:Current
474:Defunct
455:EE WiFi
428:Current
380:LineOne
375:Telfort
370:Dialcom
330:O2 (UK)
317:Plusnet
269:Plusnet
227:Current
50:Plessey
1059:People
958:NHSnet
801:TAT-14
701:Former
692:LinkUK
360:Tymnet
345:Ribbit
288:Former
1128:is a
1049:Buzby
1022:Other
811:SAT-2
796:TAT-9
791:TAT-8
786:TAT-1
450:EE TV
42:AXE10
1130:stub
305:Hibu
111:VoIP
73:PSTN
983:TXK
978:TXE
831:and
718:CS
546:and
419:and
218:and
106:TDM
62:GPO
58:STC
35:AXE
1175::
264:EE
153:,
52:,
24:BT
1161:e
1154:t
1147:v
1136:.
201:e
194:t
187:v
133:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.