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Moderator-Vertical, Vodavi, 1A2, Outside Wire
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Moderator-Vertical, Vodavi, 1A2, Outside Wire
Joined: Jan 2005
Posts: 15,381 Likes: 13 |
Many people hear the term "RJ" but have no clue what that means and they create their own interpretations. This creates a lot of confusion, but most professionals in this busines have learned how to understand what the customer "really" wants. I thought I would share this to enlighten anyone who is not familiar. Here are some links to a relatively basic explanation: https://www.arcelect.com/USOC_codes-Universal_Services_Ordering_Code.htm https://www.arcelect.com/RJ_Jack_Glossary.htm Today, there are so many "invented" RJ's, like RJ9 (supposedly for handset cords) that I couldn't resist this post. Of course, the link I attached isn't anywhere near the total list of real RJ designations. It's just a start, but it sure addresses the most popular two misnomers; RJ11 and RJ45. Take a look and you'll see what I mean. More to follow.
Ed Vaughn, MBSWWYPBX
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Ed
Good post . Maybe a future post could be on the RJ2IX and the different letters associated with that one .
Let It Be , I live in a Yellow Submarine . SCCE
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Joined: Jun 2005
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Just out of curiosity, what is the correct name for the jack and the wire of the jack, that is used for alarm systems. The one you put on the front end of the pots line and has the shorting bars in it?
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I think that is an RJ-31X
I Swear I did not touch anything 
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I Swear I did not touch anything
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I knew this was comming as soon as I saw the RJ9 post. I thought ot myself (here comes Ed) LOL
Good read tho,.. very informative
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Waine
The good news was it was only about a 100 words. :rofl:
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We call that the CA38A jack here. Not sure where that comes from, Ed fill us in!
I know it is called a CA31A and because we tamper it to a zone on the alarm system, it becomes a CA38A. We install an EOL resistor or a short across pins 2&7 and make that zone show "trouble" on the panel if it's unplugged.
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Moderator-Vertical, Vodavi, 1A2, Outside Wire
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Moderator-Vertical, Vodavi, 1A2, Outside Wire
Joined: Jan 2005
Posts: 15,381 Likes: 13 |
Yes, it's an RJ31X for the standard tip/ring in and out. The RJ38X is identical except that the jumper is wired across pins 2 and 7 to let the alarm system know that the jack is unplugged. It's not really used much anymmore because newer alarm panels have the ability to sense voltage on the line.
You know Bill, it's just as much the manufacturer's and distributor's responsibility for dreaming up these "artificial" terms being used today.
Ed Vaughn, MBSWWYPBX
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