I recently posted the following information to several other telecom related Yahoo Groups and "Listserves", but I hadn't included Telecom Digest (comp.dcom.telecom). Many participants in Telecom Digest are also on one or another of these Yahoo Groups and/or the listserves, but there are still some TD participants or visitors who are not, and they might still have an interest in this.
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WECO/Lucent/Alcatel 1AESS switches still exist in the US. There are around 60 such 1As remaining, basically all within at&t/SBC/Ameritech, sbc's at&t/BellSouth, and at&t/SBC/Southwestern-Bell territory. From what I can tell, there are _NO_ more 1As in at&t/SBC/Pacific*Telesis (Pacific*Bell in CA nor Nevada*Bell), nor Qwest/US-West territory, nor Cincinnati Bell territory, nor at&t/SBC/SNET (Connecticut).
VeriZon/Bell-Atlantic/NYNEX does not seem to have any 1As remaining (nor does long-time VZ/BA/NYNEX/NET&T-now-FairPoint in ME/NH/VT), but VeriZon/Bell-Atlantic in C&P seems to have one in Baltimore MD, and two in Virginia (Richmond, Norfolk). It doesn't seem like VeriZon/BA/Bell-of-PA nor NJ-Bell have any more 1As still in service.
There were VERY FEW (no more than about four or five) Northern Electric NE-1ESS switches manufactured/installed in the mid/late1960s-era for Bell Canada in Toronto ON and Montreal PQ. These were replaced LONG ago. These were manufactured/installed back when Northern Electric and Bell Canada still had a VERY CLOSE working relationship and licensing arrangement with Western Electric/AT&T/Bell Labs of the US. Back then, virtually everything developed by the "US" Bell System was also made available under license (although there might be some modifications) to Bell Canada and Northern Electric. That licensing arrangement for new developments ended around 1975/76, some twenty years following the 1956 Consent Decree that the Bell System entered into with the US DOJ. It SEEMS that it was the _US_ federal government more than the Canadians who back then wanted AT&T to withdraw from Canada! Prior licensing arrangements w/r/t Western Electric and Northern Electric, now known as Northern Telecom in the post-1975 period (Nortel) would be honored, but there would no longer be any almost automatic licensing of US Bell and Western innovations directly to Bell Canada as such.
Some other non-digital SPC (Stored Program Control) switches include the Northern Telecom SP(x) series, but I think that all of these in the US and Canada have since been replaced with digital switches. And the (AGCS) GTE-AE (x)EAX switches in the US and Canada (except for the5EAX which is really the digital GTD-5) all seem to have been replaced with digital offices of one kind or another. There are still quite a number of 5EAX/GTD-5 switches still in service, but these are digital offices, not "analog" non-digital yet still SPC offices...
In the early 1970s, since Bell Canada and Northern Electric knew that the day was fast approaching for the separation between Bell/Northern of Canada and the "US" Bell System, especially as AT&T was selling off more and more of its holdings of Bell Canada and NECo, Bell Canada and NECO created "Bell Northern Research", sort of like a Bell Labs for Canada, their "own" Canadian R&D unit. It was BNR that developed the SP(x) series of stored program switches heavily used in Canada (and by many non-Bell telcos in the US and elsewhere in the North American network), as well as the early truly digital switches, the DMS series, also heavily used in Canada, by independent telcos in the US (and elsewhere), and even by Bell telcos in the US both prior to divestiture but also more-so after 1984 divestiture.
I also seem to think that there are no longer any more WECo 2(x)ESS or3ESS analog-non-digital-yet-still-SPC offices still in service. The 4ESS and 5ESS are digital switches though -- the 4ESS is mainly for toll and tandem functions, and these are slowly being replaced with more recent model digital (tandem/toll) switches in the AT&T Long Lines network and some BOC/ILEC networks which inherited them post-divestiture. The 5ESS digital is quite versatile, handling local, tandem, toll, operator (OSPS) services, or combinations thereof. And Lucent/Alcatel keeps coming out with new features and models. But the old 1AESS (which enhanced/replaced the 1ESS of the mid-1960s/early-1970s era) is still around, although there aren't many left. However, "back in the days", the 1/1AESS was in _ALL_ Bell territories, even SNET in Connecticut and in Cincinnati Bell territory, both as replacements for SXS, Panel, Crossbar, and as brand new wirecenters or "expansions" of existing central offices, but to think that it's now down to around 60 such offices still in service, and only in a few of the old Bell telco territories!
But of at&t/SBC/Ameritech (Michigan-Bell and Illinois-Bell, but nothing left in Ohio, Indiana, Wisconsin), sbc's at&t/BellSouth (both Southern Bell and South Central Bell), and at&t/SBC/SW-Bell (in the St.Louis MO area and scattered about Texas), there are still several, although these are SLOWLY being replaced by digital switches and packet switches.
In October and November 2009, at&t's technical notices website (I don't visit this each and every day... that's why I haven't posted this until now) had notices about the elimination of a Dearborn MI and a Livonia MI 1AESS.
The main page for the at&t technical notices is:On Thursday 22-October-2009, at&t (ILEC) issued ATT20091022L.1 which can be downloaded from: Sometime during 4Q/2010 (exact date not shown), LIVNMIMNCG0 Livonia MI "Main" 1AESS is to be replaced with a new Nortel Packet Remote switch, LIVNMIMNRP0. The Packet Remote will be hosted by WAYNMIMN20T/DS1 Wayne MI "Main" Nortel DMS-200 tandem, which doesn't appear to have any c.o.codes. (Wayne MI DS0 does have local c.o.codes though).
LIVNMIMNCG0 Livonia MI "Main" 1AESS has SS7 Point Code 250-050-051. LIVNMIMNRP0 Livonia MI Nortel Remote Packet Switch will use the same SS7 Point Code 250-050-045 as its Wayne MI Nortel-DMS-200 host/tandem WAYNMIMN20T/DS1.
The "default" c.o.codes involved in the switch replacement are:313-937 for the Detroit-Zone-05 MI ratecenter; 734-261,421,422,425,427,458,513,522,524 for the Livonia MI ratecenter.
On Monday 02-November-2009, at&t (ILEC) issued ATT20091102L.1 which can be downloaded from:Sometime during 3Q/2010 (exact date not shown), DRBRMIDBCG0 Dearborn MI "Main" 1AESS is to be eliminated, its 313-NXX c.o.codes, lines, customers all migrated over to the co-located DRBRMIDBDS0 WECO/Lucent/Alcatel 5ESS.
SS7 Point Codes involved: DRBRMIDBCG0 1AESS: 250-050-048 DRBRMIDBDS0 5ESS: 250-050-043
The "default" c.o.codes on the 1AESS include:313-277,561,562,563,565,724, all on the Detroit-Zone-06 MI ratecenter.
The "default" c.o.codes on the 5ESS include:313-274,278,359,730,791,792, all on the Detroit-Zone-06 MI ratecenter.
NOTE that in BOTH switch replacements, I mention "default" c.o.codes. Remember that with portability, there might be customers with OTHER c.o.codes who ported-in to the old 1As being replaced, or there might be customers who have these indicated c.o.codes who have now ported-out of the old 1As and are now already on some digital or packet switch.
Additionally, I have compiled the following listing from NUMEROUS different sources, of what seems to be all of the other (some 59)1AESS offices remaining in the US as of early 2010 -- the three in VZ/C&P, and the several in at&t/MI-Bell, at&t/IL-Bell, at&t/Southern-Bell, at&t/South-Central-Bell, at&t/Southwestern-Bell. The list below does NOT include the two at&t/MI-Bell 1As mentioned above that are scheduled to be replaced sometime later during 2010 (Livonia MI, Dearborn MI).
I hope I don't have any typos here. I tried to get ALL of the (BOC) NPA-NXX c.o.codes on these 1As. I did NOT include "paging" prefixes of other paging providers. There might still "appear" to be a BOC 1AESS in service in some resources, but the NPA-NXX c.o.codes associated are _NOT_ those of the BOC, however, and those are not included here, as their inclusion in some resources is probably an anomaly.
I have included the c.o.switch "building names" as well. If a building name is _NOT_ shown, then it is assumed to be known as "Main". Some building-ID-codes in the 7th/8th positions of the CLLI are 'MA' or 'MN' and these seem to always be known as "Main". 'MT' could mean "Main/Toll" by some BOCs. Some BOCs use a two-alpha abbreviation reflecting the ratecenter or locality name again for the "building" code, such as Oak Park 'OP' in Illinois listed below, so I consider that to be "Oak Park IL -- Main", and don't give any ADDITIONAL reference to "Oak Park" nor "Main" for the building name.
BLTMMDEDCG0 Baltimore MD "Edmondson Avenue"410-233,362,566,624,945,947
RCMDVAHLCG0 Richmond VA "Hull Street"804-230,231,232,233,291,319
NRFLVAGSCG0 Norfolk-Zone-02 VA "Granby Street"757-480,531,583,587,588
BRHMMIMNCG0 Birmingham MI248-258,433,540,642,644,645,646,647,901,988
PNTCMIWSCG0 Pontiac MI "West"248-681,682,683,706.738
WYNDMIMNCG0 Wyandotte MI734-246,281,282,283,284,285,324
LNNGMISOCG0 Lansing MI "South"517-272,393,394,882,887
GDRPMIBL770 Grand Rapids MI "BEll" (the co-located GDRPMIBLDS1 Nortel-DMS-100 has some 616-23x codes, which were known as 'BEll-x' in the 2L-5N days)616-770
CHCGILAUCG0 Chicago IL "AUStin"773-261,287,378,379,473,626,854,921
OKPKILOPCG1 Oak Park IL708-209,366,383,386,445,488,524,660,763,771,848
ATLNGAAD69F Atlanta GA "Adamsville"404-472,505,691,696,699
ATLNGACD28F Atlanta GA "Columbia Drive"404-282,284,286,289,534
ATLNGAGR24F Atlanta GA "Gresham"404-212,241,243,244,328,381
ATLNGAHR79E Atlanta GA "Hollywood Road"404-792,794,799
ATLNGAWE75F Atlanta GA "West End"404-752,753,755,756,758
CRTNGAMA83C Carrollton GA770-214,830,832,834,836,838 678-796
FRBNGAEB96A Fairburn GA Atlanta-South ratecenter "East Broad"770-306,774,892,964,969
LGRNGAMA88C LaGrange GA706-242,812,837,845,882,883,884,885 LaGrange GA ratecenter 334-982 Oakland (Chambers) AL ratecenter
SVNHGADE35C Savannah GA "Derenne Avenue"912-303,351,352,353,354,355,356,691,692
WYCRGAMA28C/02T Waycross GA912-283,284,285,287,338
AGSTGAFL79C Augusta GA "Fleming"706-560,771,772,790,792,793,796,798
WRRBGAMA92C Warner-Robins GA478-322,328,329,542,918,922,923,929,975
JCBHFLMA24E Jacksonville Beach FL904-241,242,246,247,249,270
JCVLFLRV38E Jacksonville FL "Riverside"904-381,384,387,388,389,981
FTLDFLSU74E Fort Lauderdale FL "Sunrise"954-572,578,741,742,746,747,748,749
HLWDFLHA45E Hollywood FL "Hallandale"954-454,455,456,457,458,516
MIAMFLBA85E Miami FL "Bayside"305-250,285,854,856,857,858,859,860 786-314
MIAMFLME32E Miami FL "Metro"305-324,325,326,545,547,548,549,550,560,585
WPBHFLRB84E West Palm Beach FL "Riviera Beach"561-494,840,841,842,844,845,848,863,881,882
NSVLTNINCG0 Nashville TN "Inglewood"615-226,227,228,258,262,650
BRHMALEN78E Birmingham AL "Ensley"205-206,780,781,783,785,786,787,788
BRHMALEW95E Birmingham AL "Eastwood"205-951,956,957
BRHMALTA84E Birmingham AL "Tarrant"205-808,841,849
BSMRALMA42E Bessemer AL205-424,425,426,428,481
SHPTLAHDCG0 Shreveport LA "Highland"318-219,861,862,864,865,866,868,869
SHPTLAQBCG0 Shreveport LA "Queensboro"318-526,621,631,632,635,636,638
LFYTLAMACG1/04T Lafayette LA337-231,232,233,234,235,236,237,261,264,265,266,267,268,269,262,572,920
LFYTLAVMCG0 Lafayette LA "Vermillion"337-216,273,294,295,406,981,983,984,988,989,991,993
STLSMO04CG0 St.Louis MO "FOrest"314-361,367,454,758,823,826,829,848,855,879
STLSMO05CG0 St.Louis MO "JEfferson"314-286,289,321,371,531,533,534,535,652,658
STLSMO08CG0 St.Louis MO "PRospect"314-268,577,664,762,771,772,773,776,865
STLSMO23CG0 Ladue MO ratecenter "Overland"314-253,423,426,427,428,429,538,733,890
STLSMO24CG0 Ladue MO ratecenter "Riverview"314-388,867,868,869
STLSMO40CG0 Ladue MO ratecenter "Florissant"314-830,831,837,838,839,921,972
STLSMO43CG0 Ladue MO ratecenter "Hazelwood"314-551,731,895
ELPSTXNECG0 El Paso TX "Northeast"915-744,745,751,755,757,759
ODSSTXLICG0 Odessa TX "Lincoln"432-331,332,333,334,335,337 Odessa TX ratecenter 432-580,532 Odessa 'EACS' TX ratecenter
DLLSTXGPCG0 Dallas TX "Grand Prairie" TX ratecenter972-237,262,264,266,282,504,642 Grand Prairie TX ratecenter 972-260,263,269,558,901 Grand Prairie 'EMS' TX ratecenter
DLLSTXHACG0 Dallas TX "HAmilton"214-421,426,428,565,928
DLLSTXWHCG0 Dallas TX "WHitehall"214-779,941,942,943,944,946,947,948
FTWOTXATCG0 Ft.Worth TX "ATlas" TX (ratecenter and 2L-5N name)817-284,580,590,595 Atlas TX ratecenter 817-589 Atlas 'EMS' TX ratecenter 817-280,282,285 Euless TX ratecenter 817-268 Euless 'EMS' TX ratecenter
FTWOTXGLCG0 Ft.Worth TX "GLendale" TX (ratecenter and 2L-5N name)817-446,451,457,492,496 Glendale TX ratecenter 817-429,654,930 Glendale 'EMS' TX ratecenter
FTWOTXJECG0 Ft.Worth TX "JEfferson"817-413,531,534,535,536
FTWOTXWACG0 Ft.Worth TX "WAlnut"817-207,920,921,922,923,924,926,927
HSTNTXADCG0 Houston (Suburban) TX "Aldine"281-219,442,449,590,985,986,987
HSTNTXGLCG0 Houston TX "GLendale"713-330,450,451,453,455,637
HSTNTXIDCG0 Houston TX "IDlewood"713-413,433,434 Houston TX ratecenter 713-340,436 Houston Suburban TX ratecenter
HSTNTXWLCG0 Houston (Suburban) TX "West Ellington"281-464,481,484,921,929
BUMTTXTECG0 Beaumont TX "TErminal"409-212,654,757,784,785,813,827,832,833,835,838,839,841,868,880 ~ ~ ~ ~ ~ ~ ~ ~ Mark J. Cuccia