In article . com,
nr wrote:

Does anyone know where I can find the above? It has a 4-prong phone
outlet at one end, a 3" or so modular cord, then a modular plug.

http://www.radioshack.com/sm-modular-to-4-prong-adapterivory--pi-2111065.html

You could remove the old jack and install a new, modular outlet (jack) in its
place. The wiring is very simple. Good luck.
--

JR

Climb poles and dig holes
Have staplegun, will travel