Talk:RJ21
 | The contents of the RJ21 page were merged into Registered jack on 2010-10-16 and it now redirects there. For the contribution history and old versions of the merged article please see its history. |
Ethernet
[edit]RJ-21 is also using for data network (Ethernet) where 12 Ethernets can be powered over that connector. It is used both for 10 Mbit/s on Cat3 cable or for 10/100 on Cat5+ cables.
MRJ 21 connector are also under way with Gigabit capabilities and 1/3 the size of a RJ21
"Amphenol" is not an adequate description of the connector type. Amphenol makes a huge variety of connector types, including RF connectors, Circular metal, db9, etc. 142.179.103.176 (talk) —Preceding comment was added at 20:59, 11 February 2008 (UTC)
These pages seem to be an attempt to correct the "RJ" vs incorrectly applied usages of the RJ terms; Therefor
RJ21 connectors are used to connect Ethernet ports in bulk from a switch with RJ21 ports to a CAT-5 rated patch panel, or between two patch panels. A cable with an RJ21 connector on one end can support 12 8P8C "RJ45" connectors or Ethernet ports on a patch panel. The connector was genearally called an "Amphenol" connector is a Amphenol 25-pair/50-position "Micro Ribbon" or CHAMP see http://en.wikipedia.org/wiki/Micro_ribbon or (http://www.amphenolcanada.com/ProductSearch/pdf/MICRORIBBON_CAT.pdf) (the 36 position often called the centronics Parallel connector - which also actual refers to how its wired and not the connecor's actual name) —Preceding unsigned comment added by 216.99.201.90 (talk) 21:14, 8 December 2010 (UTC)
Key system pin descriptions
[edit]It would be great to have a link to the standard for western electric and compatible key sets. Knowing where the tip and ring lines would be even better.
If they use the red/green black/yellow color codes, even that would be helpful. —Preceding unsigned comment added by 174.101.136.61 (talk) 07:38, 11 May 2009 (UTC)