Talk:Telephone exchange

message: I suggest that, for the sake of clarity we use these terms throughout, pointing out the other sometimes confusing usages in a special para of its own.
* exchange building (=US "central office", UK "telephone exchange": can house switches, concentrators, or both)
* remote concentrator 
* telephone switch  (=UK "telephone exchange", too, but being replaced in UK technical use by the US term, for reasons of clarity) — Preceding unsigned comment added by The Anome (talk • contribs) 09:36, 9 July 2002 (UTC)
thread_title:  Nomenclature 

message: The section on topological sort needs to be rewritten.  I find it hard to understand (which is surprising since this is a featured article). -- Mordomo 00:23, 30 November 2004 (UTC)
thread_title: Topological sort

message: The following objections to this article should be adressed: Well, this is the first time I have seen a lead which consists of a note and bulleted list :> (Update: Lead is better, but still strange - 2 one sentence paras and one giant para don't look good. ).  No references, bad prose (lots of single sentence paras) and stub sections, some strange bolding/red links in the bottom, notes and sources in text (not formatted). Not up to a FA stanard. The lead should be divided into 2-3 paras of similar size instead of the current one giant and two tiny. --Piotr Konieczny aka Prokonsul Piotrus Talk 09:32, 8 Jun 2005 (UTC)
replies: text: Update. I see progress, but it is still short of FA, I am afraid. --Piotr Konieczny aka Prokonsul Piotrus Talk 18:45, 16 Jun 2005 (UTC)
thread_title:  FARC 

message: This article does not address several major functions of a central office. I suggest further contributions to this article that elaborate on how central offices support public data networks. It might also be worth discussing the regulatory framework that allows CLECs and other network providers collocation space and access to interconnection facilities. This is a very important role of central offices and it should be included as part of this article --teglin — Preceding unsigned comment added by Teglin333 (talk • contribs) 04:14, 25 August 2006 (UTC)
thread_title: Description of central office

message: The mobile phone standards table is irrelevant to this article. Please provide some explanation as to why it should be included. Tables should supplement information in the article. Also, the table disrupted the formatting of the historic perspective section and moved the central office photo. Teglin 15:57, 14 September 2006 (UTC)
thread_title: Mobile phone standards table

message: This article really ought to be moved to "Central Office".  X570 02:13, 23 November 2006 (UTC)
thread_title: Central Office

message: Ancient history question for Jim Henderson: What is a "distribution frame"?  Is that the long (40') frame where the pairs from the street terminated on one side of the frame, and pairs to the switches terminated on the other side of the frame, and in the middle of the frame were thousands of crossed pairs physically connecting the switch wires to the street wires?  So every time a subscriber ordered another phone and got an unused number, somebody had to physically connect a pair of wires across the frame.  Is that a distribution frame?  If not, what did you call the thing I described?  Greensburger 22:58, 23 November 2006 (UTC)
thread_title: Distribution frame

message: Looking around Wikipedia, I see articles on specific parts of the network, with less thorough coverage of outside plant than inside, and no article at all with an elementary summary of how telephone signals get from your phone jack to the jack across town or across the ocean that you're calling.  I figure this is a need.  This "telphone exchange" article comes closest but it's mostly about switchgear of the 20th century rather than anything either comprehensive or modern.  I could create a new "telphone system" article or some similar name, but instead I intend to expand an existing inadequate one.  My current candidate is "Telephony" which today is poorly organized despite being short, and is mostly about the fairly unimportant topic of IP telephony.  
Naturally my version will have links that eventually lead to links to articles for 1ESS switch and Main distribution frame and TASI and other topics,  but it will be a broad summary of the system and not get bogged down in details.  It will be approximately like the data path portion of DSL modem except of course since the phone system is more complex the article will end up being longer.  Does anyone have a better idea where to start than with Telephony?
Jim.henderson 01:52, 5 January 2007 (UTC)
thread_title: The System

message: Hi there!
Perhaps Tivadar Puskás should be mentioned in this article as - though some would argue, but - he was the inventor of the phone exchange. (Also credited in Hello: According to Thomas Edison, "Tivadar Puskas was the first person to suggest the idea of a telephone exchange".) See: Puskás on IEC.ch ; Early telephone history. -- CsTom 16:33, 27 February 2007 (UTC)
replies: text: Might be worth a "See also" but the article in question says much about what a great fellow he was and little to describe what was invented or what kind of work he did that qualifies him as having invented this item.  Edison was a great fellow too, but his telephone work as far as I know had nothing to do with switching, so he's not such a great recommendation even if were to say "invent" rather than "suggest".  I hope you can find more relevant material.  Jim.henderson 21:03, 27 February 2007 (UTC)
replies: text: It seems that someone has decided he was the inventor, as he now appears as such in the article. Anyway, I thought I would mention what I found in an old public-domain book (Herbert N. Casson, The History of the Telephone, 1910 ). According to this, the first exchange was built by the burglar-alarm business of E. T. Holmes in Boston in 1877. Holmes just hooked up a couple of telephones to his already-invented burglar-alarm switchboard. Since WP claims that Puskás invented, or 'suggested', the idea in the same city in the same year, I wonder if there was any connection between the two men. --Heron (talk) 09:42, 14 October 2012 (UTC)
thread_title:  Puskás? 

message: In the "sounds" sub-section, the following questionable sentence appears:
"Some systems had a continual, rhythmic "clack-clack-clack" from wire spring relays that made reorder (120 ipm) and busy (60 ipm) signals."
I recall that reorder, busy, and several other beep-beep-beep signals were generated by a silently running electric motor that rotated (through a worm gear) a commutator drum made of bakelite containing several exposed bronze segments of various sizes that made contact with brushes.  Electromagnetic relays fed these beeping signals to selected lines, but most of the clack-clack-clack sounds in the exchange building came from stepping switches doing the step-by-step sequence in response to pairs of rotary dialed digits.  Touchtone replaced step-by-step.  Reorder, busy, etc are still being done, but with electronic switching rather than electromagnetic relays.  If that is correct, the above sentence should be changed. Greensburger (talk) 15:25, 15 February 2008 (UTC)
replies: text: Yes, technology varied and changed, but remember the paragraph in question starts with "On a pre-dawn Sunday morning" ie when steppa switches were silent.  I indeed saw your quiet drum and brush machines in Step and Panel switches, and heard the rhythmically thumping Office Interruptor Frames of 1XB switch and the similar but higher pitched drumming of wire spring interruptors in a few upgraded 1XB and many 5XB switch.  And no, TT didn't precisely replace Strowger switches, since in many places the former arrived before the latter departed.  During the overlap in the early 1970s, I tested and repaired the Touch Tone to Dial Pulse Converters. Jim.henderson (talk) 18:01, 15 February 2008 (UTC)
thread_title: stepping switch sounds

message: When i look up Telestation in swedish, I get a similar idea of the telephone exchange.
HOWEVER, even though several other languages are listed, English is not one of them!
is there something called a telestation in Europe that doesn't exist in N.A. or what?  —Preceding unsigned comment added by 81.233.236.3 (talk) 22:09, 11 June 2009 (UTC)
replies: text: Unfortunately, I speak no Swedish, my grandmother's native language, but notice an Interwiki link to :sv:Telefonväxel which seems to be about telephone switchboards.  My guess is, different languages conventionally divide differently the concepts that in American English are called "wire center", "exchange area" "switchboard" and "automatic telephone switching system".  Alternatively, the Wikipedia editors in various languages including English may have made different arbitrary choices of division points among these and related concepts.  This is one of the difficulties of translation.  Quickly checking articles in Spanish and French, which are more familiar to me, I don't find these difficulties immediately.  Editors with wider language skills should check, and make appropriate Interwiki links.  Jim.henderson (talk) 18:46, 14 June 2009 (UTC)
thread_title:  link to telestation (Swedish) 

message: An image used in this article, , has been nominated for deletion at Wikimedia Commons for the following reason: Deletion requests June 2011 
;Factual error in description. This is a PBX installation, not a central office, and definitely not a DMS-100.
	A discussion will now take place over on Commons about whether to remove the file. If you feel the deletion can be contested then please do so (commons:COM:SPEEDY has further information). Otherwise consider finding a replacement image before deletion occurs.
This notification is provided by a Bot --CommonsNotificationBot (talk) 21:56, 27 June 2011 (UTC)
thread_title: File:Nortel DMS100 public voice exchange.jpg Nominated for Deletion

message: The article has a section called "Early automatic exchanges," but it only briefly mentions that exchanges were somehow automated in "the early 1900s." The rest of the section is about computers, dial tones, ANI, and DTMF, none of which existed in the early 1900s. — Preceding unsigned comment added by 75.186.5.185 (talk) 07:59, 19 August 2012 (UTC)
thread_title:  "Early" automatic exchanges 

message: There's a lot about "rate centre" and "local calling area" in the intro which needs to be moved to a section in the article body. These are both regulatory constructs and a bit off-topic as each may contain multiple exchanges - or even be mismatched to the exchange boundaries. K7L (talk) 04:05, 2 June 2013 (UTC)
replies: text: Most of the article is a random accumulation of material. Kbrose (talk) 20:37, 2 June 2013 (UTC)
thread_title:  Introduction poorly focussed 

message: The foto of the satellite PBX needs to be rotated 90 degrees clockwise... 201.77.180.126 (talk) 19:27, 24 July 2013 (UTC)
thread_title:  Satellite PBX foto 

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thread_title:  External links modified 

message: Is the following text in this article accurate?
"The world's first commercial telephone exchange opened on November 12, 1877 in Friedrichsberg close to Berlin. George W. Coy designed and built the first commercial US telephone exchange which opened in New Haven, Connecticut in January, 1878."
The sources I was able to find do not support the Friedrichsberg claim. 
"The first commercial telephone exchange in the world began operations on January 28, 1878 in a storefront of the Boardman Building in New Haven. George W. Coy designed and built the world's first switchboard for commercial use. Coy was inspired by Alexander Graham Bell's lecture at the Skiff Opera House in New Haven on April 27, 1877." 
"In 1878, the world’s first telephone exchange opened in New Haven. The first telephone subscriber was John E. Todd..."
"Many, including Bell, realized the phone’s one-to-one usage limited its potential, but it was Coy who first implemented a solution in the Elm City. In 1877, Coy, then the manager of the Atlantic and Pacific Telegraph Co., attended a lecture given by Bell at the Skiff Opera House in New Haven. During the lecture, Bell demonstrated the effectiveness of a three-way phone network by connecting with Hartford and Middletown on a call.
Coy was intrigued and obtained a Bell telephone franchise for New Haven and Middlesex counties later that year. The agreement stipulated that Bell’s company would own 35 percent of Coy’s new venture. Coy enlisted Walter Lewis, superintendent of the New Haven Clock Co., and Herrick Frost, a prominent businessman, as investors, and incorporated the New Haven District Telephone Co. on Jan. 15, 1878.
Soon after, on Jan. 28, from the Boardman Building in New Haven, the newly formed company launched the world’s first commercial telephone exchange. The exchange allowed anyone connected to the network to call anyone else on the network, though they would have to call into a central operator who would transfer the call."
"Tivadar Puskás (1844-1893) was born in Budapest. He was a Hungarian inventor,
telephone pioneer, and inventor of the telephone exchange. 
In 1879 Puskás set up a telephone exchange in Paris. In Paris he was greatly helped by his
younger brother Ferenc Puskás who later established the first telephone exchange in Pest.
Puskás was working on his idea for a telegraph exchange when Alexander Graham Bell
invented the telephone. He decided to get in touch with the American inventor Thomas
Edison. Edison said "Tivadar Puskas was the first person to suggest the idea of a telephone
exchange". Puskás's idea finally became a reality in 1877 in Boston.
In 1879 Puskás set up a telephone exchange in Paris. In Paris he was greatly helped by his
younger brother Ferenc Puskás who later established the first telephone exchange in Pest."[www.viszki.sulinet.hu/tananyagtar/angol/Virag/sol7.pdf]
"When he heard about Bell’s new invention, the telephone, Puskás realized that he should build a telephone exchange.  He visited and convinced Edison that the great service of telephone is needed to be available to the public as well. In 1879, he built Europe’s first telephone exchange in Paris. In Budapest, the world’s 4th exchange commenced in 1881." 
--Guy Macon (talk) 20:11, 1 February 2018 (UTC)
replies: text: It is quoted with a reference, but I clarified the statement. commercial was misleading. Kbrose (talk) 22:08, 1 February 2018 (UTC)
thread_title:  First telephone exchange? 

message: I put a citation needed template in one of the sections and it says “article”. Can someone tell me how to get it to say section? Theobegley2013 (talk) 00:34, 8 November 2023 (UTC)
thread_title:  Citation needed