We buy used ADC DSX-4R front & rear cross-connect modules. (need hundreds or whatever you have. DSX-4R-MB160 and DSX-4R-MB260 http://www.ibuywireless.com/parts/dsx-4r-mb160.php http://www.ibuywireless.com/parts/dsx-4r-mb260.php
Contact Steve Christensen quote@refurbdatacom.com www.refurbdatacom.com