[VoIP] Channel Bank on Ebay [not mine] and E&M

[windmill]

Unfortunately the RJ standard may have begun with the best intentions 
but like so many 'standards' it has become corrupted to such a point as 
to be confusing at best. I have always known an RJ11 as a 4 wire 
connection to any piece of US telephone equipment and pretty much 
everyone I know has the same idea.

Now I did note the previous post and if you re-read my post you will see 
that I was asking what RJ10 and RJ12 were. I mentioned what I understand 
an RJ12 plug to be but I was not asking about plugs at all!

My question stands!

Brian

John Novack wrote:
> Repeating a previous post.
> Handset plugs and jacks HAVE NO RJ designation.
> All Rj designations refer to the wiring pattern and connections starting 
> back in 1978.
> Refer to FCC  Part 68 BEFORE 2000.
> Google should be your friend.
> RJ 12 and 13 reference connections to 1A2 key systems, RJ14 is 2 lines 
> on one jack, RJ-25 is three lines on one 6 pin jack.
> RJ3x and 4x are 8 position modular .
>
> John Novack
>
>
> windmill wrote:
>   
>> Steph,
>>
>> Perhaps you can clarify what RJ10 and RJ12 are, I had always thought the 
>> RJ12 to be a telephone handset plug but I have never really known what 
>> an RJ10 is. My Crimping pliers do RJ45 (8P8C), RJ11 (6P6C) and a 4P4C 
>> connector which I believe is RJ12. I have seen a two pin version in this 
>> same series used internally in some telephones, would that be RJ10?
>>
>> Brian
>>
>> Steph Kerman wrote:
>>   
>>     
>>> Thanks for the clarification. 
>>>
>>> That has to be a moniker that someone invented, in other words, sort of 
>>> a fiction.  It has no real legitimacy no matter how many people may use 
>>> it, the way RJ11 and most others do.  Many people also refer to the 
>>> handset jack as an RJ22, another mis-invention in this case since the 
>>> RJ22 actually is a documented and defined interface that uses a 25 pair 
>>> Amphenol mini-ribbon connector to connect to multiple lines.
>>>
>>> Regardless of its popular use, RJ has a formal meaning.  It refers to a 
>>> "registered jack" under the FCC program that was established to allow 
>>> direct connection of privately owned equipment to the public network.  
>>> Since the Bell System was never forced by the FCC to allow connection of 
>>> privately owned equipment to their own phones at the handset interface 
>>> (as opposed to directly to the line itself), no RJ was ever defined 
>>> using the 4-position jack.
>>>
>>> Steph
>>>
>>> Mark Rudholm wrote:
>>>   
>>>     
>>>       
>>>> RJ9 is the small (four conductor positions) connector
>>>> used on handsets and handset cords.
>>>>
>>>> (it's not normally used for phone lines, with some
>>>> weird exceptions, like Sangoma FXS PCI cards)
>>>>       
>>>>         
>>>>>>   
>>>>>>
>>>>>>         
>>>>>>           
>>>>>>             
>>>   
>>>     
>>>       
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>>
>>   
>>     
>
>