From: "Tothwolf"
<tothwolf(a)concentric.net>
On Mon, 31 Dec 2001, Boatman on the River of Suck
wrote:
I could have sworn that the regular single-pair
telephone connector is
RJ11, and the two-pair/two-line one is RJ14.
Sounds right to me...
Quiz: Anyone know what an RJ31X jack is for? Google is cheating ;)
Allows one to sieze a phone line for e.g. fire alarm system. Has an in pair
and an out pair with a shorting jumper that's moved when a (RJ45?) connector
is inserted. I'm gonna be putting in couple, one to keep the data calls
uninterruptable, and one for a future fire alarm. Cheaper than a second
phone line! A breakout cable should just take a few seconds to make, to
mate the one-connector 31X to a modem w/ phone in & out.
Gosh, I figured that one would stump people for awhile. Heres a quick
reference style list of RJ type connectors for anyone interested: