ISDN Bri Trunk


I have an ISDN HFC S0 card, based on cologne chipset. I need to setup a trunk to a traditional pbx(Siemens HiPath). The problem is should I use isdn4linux or zaphfc. And if I use zaphfc what mode is the card in (TE or NT) also what signalling should I use. Are there any sites that I could learn more about the signalling. The tradional
pbx is setup as a EuroISDN(ESS1).