Try this old-school method for toning voice pairs, or data pairs that are not connected to the switch:
Put one clip of the toner on a single conductor (or a shorted pair) in the cable. Put the other clip on ground.
Use an Aines orange toner. They're the best.
By the way, did you ever notice when trying to locate a pair with a very weak signal, that if you're outdoors, a guy will start up a leaf blower, or if you're indoors, someone will start a vacuum cleaner? I believe that there is an evil genius who monitors our every move, and sends out a gardener or a custodian whenever he detects us putting a toner on a pair. It's not just paranoia...
