In a message dated 12/14/99, David Gelfand writes: > Is there any problem from an approvals perspective using an RJ-11 > plug in an RJ-45 jack? Our designers claim they fit, but it seems forced to me. > Opinions?
David: This is the kind of thing that works OK in the lab, but may not work well in the field. I too have sometimes put RJ-11 plugs into RJ-45 jacks for testing purposes, but I have noted that the RJ-11 plug does not get good lateral support in an RJ-45 jack, since the side wall of the jack do not contribute to holding the plug in place. Sometimes I have to jiggle the RJ-11 plug to get proper contact. Another consideration to keep in mind is that in some countries, the specific connector type is called out in the regulatory requirements. This consideration may or may not apply in your case, depending on your equipment type, where you plan to sell it, and where in your system you propose to use the mis-matched plug and jack. I suggest you look into this aspect carefully before you proceed. Joe Randolph Telecom Design Consultant Randolph Telecom, Inc.
