During the last few years that I worked as a CLEC/IXC CO technician, I started to save up runs of 2-pair CAT3 AT&T/Lucent/Avaya branded cable that was headed for the dumpster.
The cable was used as alarm leads, and to provide DT for SLT/DU modems.
Some of it has since been repurposed in my personal work.
This picture shows the remaining supply that someone has expressed a need for. I posted the picture here in order to send it along as a part of a PM.