Talk:Modular connector

Diagram showing pin positions would be nice
"The positions of a jack are numbered left to right, looking into the receiving side of the jack with the hook side down, starting at 1."

It would be nice to have a diagram actually showing the pin positions. I am not sure what is meant by the receiving side of the jack. Must be side where the cable goes into the jack but I am not sure.


 * Labeled picture in . ~Kvng (talk) 16:21, 24 July 2023 (UTC)

Polarity on RJ11 & RJ14 should always be reversed (like patch cables)
Polarity on RJ11 & RJ14 should always be reversed (like patch cables)

Particularly in DSL cables, but also generally, polarity is reversed on POTS / PSTN cables.

E.g., center wires will be Green / Red on one end and Red / Green on the other on an RJ11.

Wiring on an RJ14 will be

Yellow / Green / Red / Black

one end, and on the other, exactly reversed,

Black / Red / Green / Yellow.


 * Patch cables are wired straight through. Crossover cables are reversed. ~Kvng (talk) 16:36, 24 July 2023 (UTC)

Patent not earliest art
Patent number 3,699,498 predates the patent cited in the history section by 2 years. While the patent cited in the history section is a modular telephone connector that was seen on early Trimline telephone and on some 1A2 telephones, it is a different type of modular connector and doesn't closely resemble the modular connectors of today. The earlier Patent 3,699,498 does describe the modular connectors that are discussed in this article. — Preceding unsigned comment added by Hokie21 (talk • contribs) 22:04, 26 February 2016 (UTC)


 * Both patents are now mentioned in the History section. ~Kvng (talk) 16:39, 24 July 2023 (UTC)

mispairing
The article says: Only RJ11 and RJ14 have full electrical compatibility because Ethernet-compatible pin-outs split the third pair of RJ25 across two separate cable pairs, rendering that pair unusable by an analog phone. At Ethernet frequencies, the signals need to be appropriately paired. At audio frequencies, for usual lengths, probably not. If two were mispaired in the same cable, there might be noticeable crosstalk. Only one, probably not. Gah4 (talk) 06:31, 1 February 2024 (UTC)

8P8C StudioHub ?
A growing standard for radio stations and similar audio wiring is "StudioHub" which uses 8P8C connectors and standard 4-pair UTP cable. Should this be added to this (or other?) page? Ref: https://studiohub.com/wp-content/uploads/2019/10/AAStudioHubClassicPinoutGuide.pdf Rcrowley7 (talk) 01:41, 9 February 2024 (UTC)
 * This article is mostly about the connectors, and a little about how they are used. There are, for example, Ethernet articles on how to wire them up. If StudioHub is notable enough for its own article, it can go there. Gah4 (talk) 05:00, 9 February 2024 (UTC)
 * This article is mostly about the connectors, and a little about how they are used. There are, for example, Ethernet articles on how to wire them up. If StudioHub is notable enough for its own article, it can go there. Gah4 (talk) 05:00, 9 February 2024 (UTC)