for 24awg, look in the telephone/wiring section of hardware stores. I work for a phone company so I've got spools literally coming out my arse, different colors and such
I used regular .250 crimp ends- strip about 3/4", fold it over in the middle of the stripped part, place into the end and >crimp< it. Ditto this on the IPac end except strip less, since the screw terminals dont fit much more than 1/8"
If you're feeling real adventurous, contact some place that does work on phones and ask for 25-pair amphenol whips, 1 male, one female. The ends on these are similar to centronix(like a printer end). I'm going to use these for swappable panels. 50 wires should be enough for any CP, the cable is only about 1/2" max in diameter. I've got one of the whips wired to ALL of the inputs on an IPac and an OptiPac(28+20+5v+GND) and the end with the male connector routed to the area under the CP. On the cp end of things, Ive got the female end dangling(just a few inches, enough to reach the other connector) and I just use the same color code on both panels- ie the white/blue is p1 start, the blue/white is p2 start, etc.
I'll be finishing all the conenctions tomorrow and will be doing pics