Patrick, thanks for your quick reply. I'm not quite sure whether your answer is really the answer on what I wanted to ask, so I'll clarify below. Patrick Shirkey <pshirkey@xxxxxxxxxxxxxxxxx> wrote: > >Your be either one rme hammerfall + digital mixing desk with adat >connectors. Otherwise you can use multiple cards but they need to be >wordclock synced so you tracks stay in sample sync with each other. In >that case you could use two rme hdsp multifaces, 2 midiman delta1010s >and there are a couple of other 8 i/o cards with ALSA support. I think to make sure that this is really what we need I'll have to provide a better description of the problem. We are developing a testbed for wireless voice transmission. We will have up to 16 active phones, that are independently used to receive voice samples. We have to record each voice transmission to a .WAV file (because this is what the quality measurement tool understands). To do this we will have to connect the 16 phones to a Linux box (prefered) and need the ability to save the voice sample to a file. Each sample is completely independent of all the other samples. Basically we need the ability to do "sox /dev/phonespeakerX phoneXsample.wav" where 0 <= X <= 15. >> Will we have 16 /dev/dsp devices [e.g. /dev/dsp0 .. /dev/dsp16]? >> > >If you use jack you will have an easy to understand interface for >routing the i/o's. Following your suggestion I glanced at jack. I'm not quite sure whether this is really what we are looking for. Thanks in advance Joerg __________________________________________________________________ McAfee VirusScan Online from the Netscape Network. Comprehensive protection for your entire computer. Get your free trial today! http://channels.netscape.com/ns/computing/mcafee/index.jsp?promo=393397 Get AOL Instant Messenger 5.1 free of charge. Download Now! http://aim.aol.com/aimnew/Aim/register.adp?promo=380455