Dear Steve i have try SpanDSP from the first version to the last one (1k) with my Canon FAX and with my modem but every time i see a lot of message like this: ----- I send a Fax from my Canon B150 i have the following error: -- Starting simple switch on 'Zap/33-1' -- Executing RxFAX("Zap/33-1", "/home/user/testfax.tif") in new stack Changed from phase 0 to 1 Slow carrier up Slow carrier down Start receiving document Changed from phase 1 to 4 Sending ident>>> CSI: 40 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20DIS: Preferred octets: 256 Can receive fax Supported data signalling rates: V.27ter and V.29 R8x7.7lines/mm and/or 200x200pels/25.4mm OK 2D coding OK Scan line length: 215mm Recording length: A4 (297mm) Receiver's minimum scan line time: 0ms at 3.85 l/mm: T7.7 = T3.85 R8x15.4lines/mm OK Minimum scan line time for higher resolutions: T15.4 = T7.7>>> DIS: 80 00 ce f0 80 80 01HDLC underflow in state 9 Changed from phase 4 to 3 Slow carrier up <<< TSI: 43 37 30 38 30 35 33 31 33 33 30 20 20 20 20 20 20 20 20 20 20 TSI without final frame tag Remote fax gave TSI as: "031xxxxx" <<< DCS: 83 00 86 a0 00 DCS with final frame tag In state 9 DCS: Can receive fax Selected data signalling rate: V.29, 9600bps 2D coding OK Scan line length: 215mm Recording length: A4 (297mm) Minimum scan line time: 10ms Get at 9600 Changed from phase 3 to 5 Fast carrier up Floating point exception [root@pbx asterisk]# Ouch ... error while writing audio data: : Broken pipe Ouch ... error while writing audio data: : Broken pipe ----- And Crashed... The Fax is connect to FXS line of my TDM400 Canon--->TDM400 I used Mandrake 9.2 with latest libtiff: libtiff3-3.5.7-11mdk libtiff-progs-3.5.7-11mdk libtiff3-devel-3.5.7-11mdk and with Asterist cvs Stable 1_0 30-03-04 also with Stable 0.7.2. I follow every line of your readme file, but nothing to do. Can you give some tips? I cant understand if i have lost something or if is possible problem with my fax machine? Thanks in advance Dimitri