>> I appreciate the approach Olin took on this.   When I read the
>> original post, I began to worry that all my designs that use an
>> RJ-12 connector were somehow flawed.   It took me about 15
>> minutes of thinking about the jack to decide my fears were
>> unfounded and that I had temporarily allowed the OP to
>> anchor me with a negative opinion of the jack.
>>
>>   
>Olin is dead right about the connector. It is very reliable, and 
>the last standard from bell systems was that the contact point 
>must be gold. I believe it would be hard to find a better connector. 
>My complaint is from the wires that must be used with the RJ-12.

It seems to me that these connectors are not made for regular mates and
demates. They are designed for a small number of uses, such as they
would normally get when used in telephony service. They do generate
problems with regular usage, one problem I have heard of is the wire
contacts coming out of their slots in the body of the connector, and the
back end coming free and going into an adjacent slot. There is also the
problem noted elsewhere in this thread where with continual matings the
contacts seem to work their way back into the socket body, so that the
plug has to be pushed in past the latch click point to get reliable
operation.

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