Talk:Business telephone system

From Wikipedia, the free encyclopedia
Jump to: navigation, search
WikiProject Telecommunications (Rated Start-class, High-importance)
WikiProject icon This article is within the scope of WikiProject Telecommunications, a collaborative effort to improve the coverage of Telecommunications on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
Start-Class article Start  This article has been rated as Start-Class on the project's quality scale.
 High  This article has been rated as High-importance on the project's importance scale.

History of EKTS[edit]

Business telephone system article needs more interesting information This article would be better identified as "Key Telephone Systems" or "Small Business Telephone Systems", since it does not address PBXs (which are described in their own article). The following points should be made clear:-

  1. The advent of Electronic Key Telephone Systems (EKTS), in the late 1970s, made very positive changes to the small business market for telephone systems. EKTS were easy to use and fairly simple to install. As such, they were ideal for small-business-to-small-business sales and many EKTS dealers became successful.
  2. The use of EKTS was a uniquely American and East Asian phenomenon. In Europe and in countries served, or influenced, by European manufacturers very small PBXs were commonly used and EKTS were unknown. This difference was likely driven by tariff considerations.
  3. In N. America the telephone companies generally charged twice as much (typically $80./month) for each trunk to a PBX as for a business line (say $40./month) to an EKTS. This, obviously, made an EKTS attractive for small offices, with up to about 20 lines. This distinction disappeared in the early 1990s, as competition from efficient Primary Rate ISDN (PRI) forced down the cost of an analog PBX trunk to that of the business line tariff. Organizations with several EKTS could save more by using Centrex lines to the serving CO, as these could be discounted down to $20./month.
  4. Japanese manufacturers (e.g. NEC & Panasonic) gained a much larger share of the N.American EKTS market than they did in PBXs. By 1990 AT&T (now Avaya) was making its EKTS in Indonesia and Nortel had the only remaining domestic EKTS plant - in Calgary,AB. David Charles A (talk) 19:36, 6 April 2010 (UTC)
Nice to hear from someone who knows the business better than I do. Yes, the article was moved from Key telephone system last year, on grounds that struck me as somewhat adequate, but it's no big problem as the redirect handles it. Unless, that is, you think content should be moved between this article and another. These historical points are indeed interesting; the main problem is that the article is already of moderate size and entirely without WP:REFERENCEs and finding citable sources might be difficult. Jim.henderson (talk) 17:44, 8 April 2010 (UTC)


Merging Private branch exchange into this article is complete, although there is cleanup remaining to be done. For anyone coming here wondering what happened, there was enough overlap that this article, which used to be the "key system" article until a rename changed it's scope, and the "private branch exchange" article were WP:BOLDly merged into this article. Remaining tasks are:

  • Rewriting of sections to be a more coherent article.
  • Adding sufficient references to the article.
  • Populate the Further Reading section (there are remarks on the Private Branch Exchange article which might belong here.

I'll try to continue this effort tomorrow, but if you feel like working on any of the above, please do so :) Triona (talk) 09:38, 5 September 2010 (UTC)

Why was this done? PBX is a fairly broad topic in its own right, which merits an article. Dumping it here means that most of this page is about PBXen. K7L (talk) 04:33, 3 January 2015 (UTC)
IP PBX is its own article, and I think it makes sense for private branch exchange should be its own article as well. We could potentially merge IP PBX into the (newly-created) private branch exchange article. —danhash (talk) 02:54, 10 April 2015 (UTC)

Possible sources[edit]

  • Gregory, Donald (2007). Voice & Data Communications Handbook. New York: McGraw-Hill. ISBN 0072263350. 

PBX is an example of what type of topology?[edit]

PBX is an example of what type of topology? — Preceding unsigned comment added by (talk) 15:57, 1 June 2012 (UTC)


EPABX (Electronic Private Automatic Branch Exchange) EPABX is an electronic device used in Offices, Hotels, Industries and many other places for voice communication. It is independent and can work with out any trunk lines (service providers)

The main features offered by any EPABX system are: 1. Call transfer 2. Call pick up 3. Call back up 4. Conference 5. Barge-in etc.

The system mainly contains: 1. PSU (Power Supply Unit) 2. CPU (Central Processing Unit) 3. EC (Extension Cards) 4. LC (Line Card or Trunk Card)(Optional) 5. PRI (Primary Rate Interface or Digital Trunk Card)(Optional) etc. All these are assembled in a Cabinet.

Top EPABX companies in India:

MNC branded EPABX companies

1. AVAYA GlobalConnect Most probably, the biggest MNC EPABX player in India. They focus more into enterprise business. They have created their own dealer network all over India. They sell many voice networks, unified messaging solutions, call center etc.

2. Samsung The electronics major manufactures EPABX too and they sell in India too. HCL ( Hindustan Computers Limited) is Samsung distributor in India which provides all kinds of EPABX right from analog to digital TDM switches.

3. Alcatel Alcatel also sells varous EPABX, PBX machines in India through their dealers, value added resellers all over India.

4. Ericcson ( Now AASTRA) AASTRA sells their EPABX in India through HCL Infosystem ltd. HCL has dealer in all over India.

5. Siemens Siemens India is Siemens subsidiary in India. They also have their own dealer network to sell their EPABX and various voice networking solutions.

6. Tadiran Telecom Tadiran is Isreal based MNC selling their EPABX systems in India for long time now. They are tied up with HCL infosystem and BPL telecom.

7. Karrel Karrel is US based EPABX manufacturer selling PBX systems in India through their distributor Intellicon Pvt. Limited based in Ahmedabad, Gujarat.

8. Panasonic Panasonic is another MNC brand selling all over India though their own network.

9. NEC NEC has tied up with Syntel, Arbidn Mills Telecom divison and sells all kinds of EPABX equipments.

Domestic Indian EPABX companies

1. Coral Telecom Coral Telecom seems to be the biggest EPABX company in India now with products ranging from small analog PBX to large VoIP based switches. It has large clients in BSNL, Indian Railways, government departments, Public Sector units, Defence forces. Head quartered in Noida, India, it has now offices in other countries too.

2. Accord It is another EPABX manufacturing company selling various small to large PABX machines throughout India. Based in Meerut and they have branch offices all over India.

4. Matrix Matrix might! be the second largest Indian EPABX company. They have many EPABX products, analog and digital. They have large customer base and has offices all over India. Matrix is well known PBX brand in India.

5. Centrex Telecom Centrex is Hyderabad based company with offices in many cities in India. They mainly manufacture low end analog EPABX systems.

6. Crystal Digital Concepts Crystal is another EPABX company in India which manufacture and sell analog and digital EPABX systems with GSM connectivity. They too sell directly with their offices in various cities in India.

7. Syntel Telecom Syntel is telecom division of well known company Arbind Mills Limited. They have been manufacturing smaller EPABX machines and sold many EPABX to Indian Army. They have tied up with NEC for high end PBX systems. — Preceding unsigned comment added by Karthikpspl (talkcontribs) 14:26, 8 July 2012 (UTC)


A business telephone system is any of a range of a multiline telephone systems typically used in business environments, encompassing systems ranging from small key systems to large scale private branch. A business telephone system differs from simply using a telephone with multiple lines in that the lines used are accessible from multiple telephones, or "stations" in the system, and that such a system often provides additional features related to call handling. Business telephone systems are often broadly classified into "key systems", "hybrid systems", and "private branch exchanges".® — Preceding unsigned comment added by (talk) 09:09, 7 August 2013 (UTC)