ATM25: Difference between revisions
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{{Short description|Asynchronous Transfer Mode physical layer}} |
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'''ATM25''' is an ATM ([[Asynchronous Transfer Mode]]) version wherein data is transferred at 25.6 [[Mbit/s]] over [[Category 3 cable]]. |
'''ATM25''' is an ATM ([[Asynchronous Transfer Mode]]) version wherein data is transferred at 25.6 [[Mbit/s]] over [[Category 3 cable]]. |
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== Background == |
== Background == |
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ATM25 has no particular distinctions from other ATM versions. However, ATM25 chipsets are inexpensive in comparison to faster ATM chipsets, having the result of making ATM technology available for [[small office/home office]] environments. However, these networks no longer have much potential for expansion, as [[Ethernet]] has become the first choice in this domain. |
ATM25 has no particular distinctions from other ATM versions.<ref>{{Cite web |last=Williams |first=Robert |date=1996-03-01 |title=Application of ATM technology to the Systems Management Department Computer Laboratory Network |url=https://web.archive.org/web/20190414043742/https://core.ac.uk/download/pdf/36701524.pdf |access-date=2023-12-05 |website=web.archive.org}}</ref> However, ATM25 chipsets are inexpensive in comparison to faster ATM chipsets, having the result of making ATM technology available for [[small office/home office]] environments. However, these networks no longer have much potential for expansion, as [[Ethernet]] has become the first choice in this domain. |
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ATM25 chips can typically achieve speeds of around 9 mbps,<ref>{{Cite web |title=Techsearch Results |url=https://www.ou.edu/class/telecomm/cs0108.htm |access-date=2023-12-05 |website=www.ou.edu}}</ref> and typically support around 32 devices in a single loop.<ref>{{Cite web |title=The Token Tagging Ring (DJ Greaves) |url=https://www.cl.cam.ac.uk/research/srg/han/docs/token_tagging.html |access-date=2023-12-05 |website=www.cl.cam.ac.uk}}</ref> ATM25 is still supported today by [[Category 6 cable|Cat 6a cables]].<ref>{{Cite web |date=2020-04-01 |title=Information & Communications Technology Network Infrastructure Delivery |url=https://www.imperial.ac.uk/media/imperial-college/administration-and-support-services/ict/public/Appendix-C--Cabling-Specification-and-Installation-v1.6.pdf |access-date=2023-12-05 |website=[[Imperial College London]]}}</ref> |
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The [[Wide area network|WAN]] connection side of ATM25 systems often takes place over a fast [[Digital subscriber line|DSL]] variant such as [[Rate-Adaptive Digital Subscriber Line|RADSL]]. DSL is often considered in this case, as its technology is based on an ATM core. |
The [[Wide area network|WAN]] connection side of ATM25 systems often takes place over a fast [[Digital subscriber line|DSL]] variant such as [[Rate-Adaptive Digital Subscriber Line|RADSL]]. DSL is often considered in this case, as its technology is based on an ATM core. |
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== Criticisms == |
== Criticisms == |
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In March 2001, [[Network World]] described ATM25 as a "solution looking for a problem":<ref> |
In March 2001, [[Network World]] described ATM25 as a "solution looking for a problem":<ref>{{Cite book |url=https://books.google.com/books?id=EBwEAAAAMBAJ&pg=PA98&lpg=PA98&dq=%2225M+bit/sec+ATM+to+the+desktop%22 |title=Network World 15 Anniversary |date=2001-03-26 |publisher=IDG Network World Inc |language=en}}</ref> |
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<blockquote>Classified mostly as a solution looking for a problem, 25M bit/sec ATM to the desktop failed before it really got rolling. While many folks thought the idea of providing all that bandwidth to user PCs was worthwhile, the idea of paying twice as much for the luxury compared with switched Ethernet didn't fly. </blockquote>ATM25 was criticised for being more expensive to use than [[10Base-T|10Base-T Ethernet]]<ref>{{Cite web |title=The downside of atm25 is that it requires replacing |url=https://www.coursehero.com/file/p910br/The-downside-of-ATM25-is-that-it-requires-replacing-all-legacy-network-adapters/ |access-date=2023-12-04 |website=www.coursehero.com}}</ref> |
<blockquote>Classified mostly as a solution looking for a problem, 25M bit/sec ATM to the desktop failed before it really got rolling. While many folks thought the idea of providing all that bandwidth to user PCs was worthwhile, the idea of paying twice as much for the luxury compared with switched Ethernet didn't fly. </blockquote>ATM25 was criticised for being more expensive to use than [[10Base-T|10Base-T Ethernet]]<ref>{{Cite web |title=The downside of atm25 is that it requires replacing |url=https://www.coursehero.com/file/p910br/The-downside-of-ATM25-is-that-it-requires-replacing-all-legacy-network-adapters/ |access-date=2023-12-04 |website=www.coursehero.com}}</ref> |
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Revision as of 21:17, 5 December 2023
ATM25 is an ATM (Asynchronous Transfer Mode) version wherein data is transferred at 25.6 Mbit/s over Category 3 cable.
Background
ATM25 has no particular distinctions from other ATM versions.[1] However, ATM25 chipsets are inexpensive in comparison to faster ATM chipsets, having the result of making ATM technology available for small office/home office environments. However, these networks no longer have much potential for expansion, as Ethernet has become the first choice in this domain.
ATM25 chips can typically achieve speeds of around 9 mbps,[2] and typically support around 32 devices in a single loop.[3] ATM25 is still supported today by Cat 6a cables.[4]
The WAN connection side of ATM25 systems often takes place over a fast DSL variant such as RADSL. DSL is often considered in this case, as its technology is based on an ATM core.
Criticisms
In March 2001, Network World described ATM25 as a "solution looking for a problem":[5]
Classified mostly as a solution looking for a problem, 25M bit/sec ATM to the desktop failed before it really got rolling. While many folks thought the idea of providing all that bandwidth to user PCs was worthwhile, the idea of paying twice as much for the luxury compared with switched Ethernet didn't fly.
ATM25 was criticised for being more expensive to use than 10Base-T Ethernet[6]
References
- ^ Williams, Robert (1996-03-01). "Application of ATM technology to the Systems Management Department Computer Laboratory Network" (PDF). web.archive.org. Retrieved 2023-12-05.
- ^ "Techsearch Results". www.ou.edu. Retrieved 2023-12-05.
- ^ "The Token Tagging Ring (DJ Greaves)". www.cl.cam.ac.uk. Retrieved 2023-12-05.
- ^ "Information & Communications Technology Network Infrastructure Delivery" (PDF). Imperial College London. 2020-04-01. Retrieved 2023-12-05.
- ^ Network World 15 Anniversary. IDG Network World Inc. 2001-03-26.
- ^ "The downside of atm25 is that it requires replacing". www.coursehero.com. Retrieved 2023-12-04.
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