Thank you for purchasing Quad(4) port ISDN BRI card http://quadbri.pbxhardware.com/driver Here you can find manuals and drivers fot the Quad(4) port ISDN BRI card made by PhonicEQ Inc. bristuff - drivers based on bristuff (modified Asterisk/zaptel package) - also read quadbri-install.pdf misdn - drivers based on mISDN stack with chan_misdn channel driver - recommended for trixbox installation trixbox - the PhonicEQ revision of Trixbox with the drivers preinstalled Questions ? email: support@phoniceq.com NOTE: US BRI circuit customers need to contact support since each installation involving US BRI circuit is custom; SSH access is required