Talk:Private branch exchange

message: I am deleting this part of the discussion about the "hosted PBX" stuff. I would recommend to people whom are interested in learning *traditonal* PBXes, to not go to wikipedia - or the internet rather. This kind of medium is really biased on non Definitys, Meridians, etc. I tried looking on the Internet to look do more reasearch on traditonal voice systems, and had no real luck. I can go on with the VoIP/hosted PBX/whatever killing tradtional TDM/ISDN/digital/propertiary telephony. But I still think that this entry should cover more traditonal telephony or a seperate entry on a history of the PBX and another entry of the kinds and types and makes of switches. That is my $0.02... —Preceding unsigned comment added by Steven312 (talk • contribs) 15:08, 9 October 2005
In the Home and Small Business Usage section, would it be applicable to reference hosted PBX since it allows small businesses to utilize this form of communication without the technical knowledge?Voice99 (talk) 15:49, 28 September 2009 (UTC)
thread_title:  Hosted PBX... 

message: Dude, I have a question. Immediately after receiving the signal from traunk lines and processing it on the PABX, you send it to a huge box where all the building extentions are terminated. What is the proper technical name for this termination box? Do we have an article on it, though I suspect there will be very little to say about it? What about an article that thoroughly discuss how telephone cabling is laid out after the PABX? It looks obvious, but I think its still worth an article if you happen to have that information on your figure tips. Google doesn't help much, probabily because nobody has done it out there —Preceding unsigned comment added by User: (talk • contribs) 209.82.57.208
Sorry Patch Panel —Preceding unsigned comment added by User: (talk • contribs) 209.82.57.208
:Main Distribution Frame (MDF) --Ali@gwc.org.uk 23:49, 28 November 2005 (UTC)
thread_title:  Cabling termination box 

message: True, the P as in Private question is service, not ownership, so I corrected that notion in two places.  The error of calling it a matter of ownership seems to have been in the article since the early days of Wikipedia.  VOIP on the other hand was inserted in the middle of October by someone who has since ceased to edit Wiki.  I do not propose to expell VOIP from the article, but have moved it further down in its section.  Perhaps someone else will want to move it into the Trends section or a new section, or a more appropriate article.  Someone really ambitious could create a separate article; I don't have that kind of knowledge or interest.  I do hope others will insert better information.
Jim.henderson 01:31, 27 December 2006 (UTC)
thread_title:  VOIP 

message: "PBX"  means:  Personal Business eXchange.  We called them "switches" after the old telephone manual switchboards. By digitizing and multiplexing; 100 calls could be sent per pair, full duplex.  Harris Digital Telephone Corp, of Melbourne, FL is a major supplier.  See that scene in "Clear and Present Danger" where a CIA operative slams a defective Harris switch while wiretapping--it is the blue one.68.231.189.108 (talk) 11:53, 10 October 2009 (UTC)
thread_title: PBX/vendor

message: This article needs greater depth, with more useful information. A diagram, to define the terms used, would be preferable to the photo. At the first mention of Centrex, there should be a link to the Centrex article in Wikipedia. (I prefer "virtual PBX" to describe Centrex.) With this link the text on Centrex and hosted PBX becomes redundant. 
The duplication of comments re Electronic Key Telephone Systems (EKTS) needs to be tidied up. In the Americas, most offices with fewer than 50 lines used EKTS - unless the office needed a PBX for tight integration into a corporate network. Some businesses with over 100 lines were well served by a digital EKTS.
In most cases the major cost saving (as local calls are often free) with a PBX is due to the line:trunk ratio, which is often 10:1, so eliminating the cost of an outside line to each extension. The usual provision of a voice-processing sub-system, delivering a range of applicatios, with a a PBX should be explained. Contact (or call) center applications and requirements should also be addressed.
The fact that the digital PBX is software-based, driven by a minicomputer (in early releases) or a microprocessor, should be emphasized. The major PBX manufacturers had over 6,000 person-years (i.e. at least $1 billion) invested in their software packages. During the life-time of a digital PBX, most vendors made a major upgrade, providing a more powerful processor or more memory, every two years.
 
Most organizations with 500, or more, lines on their PBX(s) had a dedicated telecom department, with personnel who did System Administration and so handled Moves, Adds and Changes (MACs). It was commonly accepted that one telecom analyst was needed for every 1,000 lines.
JohnRAbrams (talk) 19:41, 5 July 2010 (UTC)
thread_title:  PBX Article needs more content - Part 1 

message: Bush, S. E. & Parsons, C. R. (1993) Private Branch Exchange Systems - McGraw-Hill, New York, NY
Abrahams, J. R. (1987 & 1990) Integrated Private Branch Exchange Systems - National Computing Centre, Manchester, UK
JohnRAbrams (talk) 20:01, 5 July 2010 (UTC)
thread_title:  Further Reading 

message: The article Business telephone system originally was titled Key system to differentiate it from a Private branch exchange or hybrid systems (which combine elements of both). As this article would seem to fit into the scope of a Business telephone system, and as key systems and PBX systems have grown increasingly similar in operation, I think it would make sense for a merge, and barring significant opposition to doing so, I will attempt the merge soon. Triona (talk) 07:35, 5 September 2010 (UTC)
thread_title:  Merge with [[Business telephone system]]