Correction to my own post: bandwidth is fixed at about 3kHz. 8kHz is the sampling rate for the digitization. On Tue, Nov 16, 2010 at 5:42 PM, Sean Breheny wrote: > On Tue, Nov 16, 2010 at 11:39 AM, Herbert Graf wrote: >> The max theoretical bandwidth from analog end to analog end is about >> 35kbit/s. > > That sounds right to me as a practical limit, but not a theoretical > limit. Where did you get that from? If it were a purely analog line > then the throughput would be governed by the bandwidth (fixed at about > 8kHz) and the signal to noise ratio (which could always be improved > and so does not impose a theoretical limit). That leaves the > digitization step as the theoretical limit and that is 64 kbit/sec. > > Sean > --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .