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Hi Lee and all, I've been following your suggestions about VoIP and faxes, and in order to avoid these kind of problems i've replaced the asterisk pbx with a traditional analog Panasonic PBX (Model KX-T206SP). The results are that i have the same problems :-(, so i don't think it's a VoIP issue now. As you also suggested i've tried to send faxes from one hylafax server to another hylafax server: Hylafax Linux ------ Modem ---- Panasonic ---- Modem ----- Hylafax linux Server PBX Server And here are the session logs of each one, sender and receiver: SENDER: ----------------------- Mar 10 12:28:38.62: [ 1092]: SESSION BEGIN 000000040 349121 Mar 10 12:28:38.62: [ 1092]: HylaFAX (tm) Version 4.2.1 Mar 10 12:28:38.62: [ 1092]: SEND FAX: JOB 27 DEST 21 COMMID 000000040 DEVICE '/dev/ttyS0' Mar 10 12:28:38.62: [ 1092]: STATE CHANGE: RUNNING -> SENDING Mar 10 12:28:38.62: [ 1092]: MODEM input buffering enabled Mar 10 12:28:38.62: [ 1092]: Apply DialString rules to "21" Mar 10 12:28:38.62: [ 1092]: --> return result "21" Mar 10 12:28:38.62: [ 1092]: <-- [12:AT+FCLASS=1\r] Mar 10 12:28:38.82: [ 1092]: --> [2:OK] Mar 10 12:28:38.82: [ 1092]: MODEM set XON/XOFF/FLUSH: input ignored, output disabled Mar 10 12:28:38.82: [ 1092]: DIAL 21 Mar 10 12:28:38.82: [ 1092]: <-- [7:ATDT21\r] Mar 10 12:29:02.48: [ 1092]: --> [7:CONNECT] Mar 10 12:29:02.48: [ 1092]: MODEM input buffering disabled Mar 10 12:29:04.24: [ 1092]: --> HDLC<34:FF C0 04 AD 00 55 12 9E 36 86 62 82 1A 04 14 2E B6 94 04 6A A6 4E CE 96 F6 76 04 2C 74 4C 74 8C B1 17> Mar 10 12:29:04.24: [ 1092]: --> [2:OK] Mar 10 12:29:04.24: [ 1092]: REMOTE NSF "B5 00 AA 48 79 6C 61 46 41 58 20 28 74 6D 29 20 56 65 72 73 69 6F 6E 20 34 2E 32 2E 31" Mar 10 12:29:04.24: [ 1092]: NSF remote fax equipment: HylaFAX Mar 10 12:29:04.24: [ 1092]: NSF remote station ID: "HylaFAX (tm) Version 4.2.1" Mar 10 12:29:04.24: [ 1092]: <-- [9:AT+FRH=3\r] Mar 10 12:29:04.26: [ 1092]: --> [7:CONNECT] Mar 10 12:29:05.04: [ 1092]: --> HDLC<25:FF C0 02 0E AE 2E A6 CA E6 76 96 16 2E F6 72 04 04 04 04 04 04 04 04 7C F4> Mar 10 12:29:05.05: [ 1092]: --> [2:OK] Mar 10 12:29:05.05: [ 1092]: REMOTE CSI "NothingSetup" Mar 10 12:29:05.05: [ 1092]: <-- [9:AT+FRH=3\r] Mar 10 12:29:05.07: [ 1092]: --> [7:CONNECT] Mar 10 12:29:05.42: [ 1092]: --> HDLC<9:FF C8 01 00 76 5F 00 C6 4A> Mar 10 12:29:05.44: [ 1092]: --> [2:OK] Mar 10 12:29:05.44: [ 1092]: REMOTE best rate 14400 bit/s Mar 10 12:29:05.44: [ 1092]: REMOTE max A3 page width (303 mm) Mar 10 12:29:05.44: [ 1092]: REMOTE max unlimited page length Mar 10 12:29:05.44: [ 1092]: REMOTE best vres 7.7 line/mm Mar 10 12:29:05.44: [ 1092]: REMOTE best format 1-D MH Mar 10 12:29:05.44: [ 1092]: REMOTE best 0 ms/scanline Mar 10 12:29:05.44: [ 1092]: USE 14400 bit/s Mar 10 12:29:05.44: [ 1092]: USE 0 ms/scanline Mar 10 12:29:05.44: [ 1092]: SEND file "docq/doc31.ps;c0" Mar 10 12:29:05.44: [ 1092]: USE A4 page width (215 mm) Mar 10 12:29:05.44: [ 1092]: USE unlimited page length Mar 10 12:29:05.44: [ 1092]: USE 3.85 line/mm Mar 10 12:29:05.44: [ 1092]: USE 1-D MH Mar 10 12:29:05.45: [ 1092]: SEND training at v.17 14400 bit/s Mar 10 12:29:05.45: [ 1092]: <-- [9:AT+FTH=3\r] Mar 10 12:29:05.49: [ 1092]: --> [7:CONNECT] Mar 10 12:29:05.49: [ 1092]: <-- HDLC<23:FF C0 C2 0E AE 2E A6 CA E6 76 96 16 2E F6 72 04 04 04 04 04 04 04 04> Mar 10 12:29:05.49: [ 1092]: <-- data [23] Mar 10 12:29:05.49: [ 1092]: <-- data [2] Mar 10 12:29:05.52: [ 1092]: --> [7:CONNECT] Mar 10 12:29:05.52: [ 1092]: <-- HDLC<6:FF C8 C1 00 44 1E> Mar 10 12:29:05.52: [ 1092]: <-- data [6] Mar 10 12:29:05.52: [ 1092]: <-- data [2] Mar 10 12:29:07.69: [ 1092]: --> [2:OK] Mar 10 12:29:07.69: [ 1092]: DELAY 70 ms Mar 10 12:29:07.76: [ 1092]: MODEM set XON/XOFF/FLUSH: input interpreted, output disabled Mar 10 12:29:07.76: [ 1092]: <-- [11:AT+FTM=145\r] Mar 10 12:29:09.44: [ 1092]: --> [7:CONNECT] Mar 10 12:29:09.44: [ 1092]: <-- data [1024] Mar 10 12:29:09.44: [ 1092]: <-- data [1024] Mar 10 12:29:09.44: [ 1092]: <-- data [652] Mar 10 12:29:09.44: [ 1092]: <-- data [2] Mar 10 12:29:10.99: [ 1092]: --> [2:OK] Mar 10 12:29:10.99: [ 1092]: MODEM set XON/XOFF/DRAIN: input ignored, output disabled Mar 10 12:29:10.99: [ 1092]: <-- [9:AT+FRH=3\r] Mar 10 12:29:11.55: [ 1092]: --> [7:CONNECT] Mar 10 12:29:12.67: [ 1092]: --> HDLC<5:FF C8 21 57 BE> Mar 10 12:29:12.72: [ 1092]: --> [2:OK] Mar 10 12:29:12.72: [ 1092]: TRAINING succeeded Mar 10 12:29:12.72: [ 1092]: DELAY 200 ms Mar 10 12:29:12.92: [ 1092]: <-- [11:AT+FTM=146\r] Mar 10 12:29:13.42: [ 1092]: --> [7:CONNECT] Mar 10 12:29:13.42: [ 1092]: MODEM set XON/XOFF/FLUSH: input interpreted, output disabled Mar 10 12:29:13.42: [ 1092]: SEND begin page Mar 10 12:29:13.42: [ 1092]: Reading MMR-compressed image file Mar 10 12:29:13.46: [ 1092]: <-- data [1025] Mar 10 12:29:13.46: [ 1092]: <-- data [1032] Mar 10 12:29:13.46: [ 1092]: <-- data [1030] Mar 10 12:29:13.46: [ 1092]: <-- data [1024] Mar 10 12:29:13.46: [ 1092]: <-- data [1029] Mar 10 12:29:15.46: [ 1092]: <-- data [1027] Mar 10 12:29:15.46: [ 1092]: <-- data [1025] Mar 10 12:29:15.46: [ 1092]: <-- data [1028] Mar 10 12:29:17.45: [ 1092]: <-- data [1027] Mar 10 12:29:17.45: [ 1092]: <-- data [1027] Mar 10 12:29:17.45: [ 1092]: <-- data [1024] Mar 10 12:29:17.45: [ 1092]: <-- data [1029] Mar 10 12:29:19.45: [ 1092]: <-- data [1028] Mar 10 12:29:19.45: [ 1092]: <-- data [1027] Mar 10 12:29:19.45: [ 1092]: <-- data [1029] Mar 10 12:29:19.45: [ 1092]: <-- data [1031] Mar 10 12:29:21.45: [ 1092]: <-- data [1025] Mar 10 12:29:21.45: [ 1092]: <-- data [1027] Mar 10 12:29:21.45: [ 1092]: <-- data [1029] Mar 10 12:29:23.44: [ 1092]: <-- data [1029] Mar 10 12:29:23.44: [ 1092]: <-- data [1025] Mar 10 12:29:23.44: [ 1092]: <-- data [1025] Mar 10 12:29:23.44: [ 1092]: <-- data [1026] Mar 10 12:29:25.44: [ 1092]: <-- data [1027] Mar 10 12:29:25.44: [ 1092]: <-- data [1025] Mar 10 12:29:25.44: [ 1092]: <-- data [1025] Mar 10 12:29:25.44: [ 1092]: <-- data [1024] Mar 10 12:29:27.44: [ 1092]: <-- data [1027] Mar 10 12:29:27.44: [ 1092]: <-- data [1025] Mar 10 12:29:27.44: [ 1092]: <-- data [1025] Mar 10 12:29:27.44: [ 1092]: <-- data [1026] Mar 10 12:29:29.43: [ 1092]: <-- data [1026] Mar 10 12:29:29.43: [ 1092]: <-- data [1026] Mar 10 12:29:29.43: [ 1092]: <-- data [1026] Mar 10 12:29:31.43: [ 1092]: <-- data [1028] Mar 10 12:29:31.43: [ 1092]: <-- data [1026] Mar 10 12:29:31.43: [ 1092]: <-- data [1029] Mar 10 12:29:31.43: [ 1092]: <-- data [1029] Mar 10 12:29:33.43: [ 1092]: <-- data [283] Mar 10 12:29:33.43: [ 1092]: SENT 39195 bytes of data Mar 10 12:29:33.43: [ 1092]: SEND 1D RTC Mar 10 12:29:33.43: [ 1092]: <-- data [29] Mar 10 12:29:33.43: [ 1092]: <-- data [2] Mar 10 12:29:33.43: [ 1092]: SEND end page Mar 10 12:29:35.54: [ 1092]: --> [2:OK] Mar 10 12:29:35.54: [ 1092]: MODEM set XON/XOFF/DRAIN: input ignored, output disabled Mar 10 12:29:35.54: [ 1092]: DELAY 90 ms Mar 10 12:29:35.63: [ 1092]: SEND send EOP (no more pages or documents) Mar 10 12:29:35.63: [ 1092]: <-- [9:AT+FTH=3\r] Mar 10 12:29:35.68: [ 1092]: --> [7:CONNECT] Mar 10 12:29:35.68: [ 1092]: <-- HDLC<3:FF C8 F4> Mar 10 12:29:35.68: [ 1092]: <-- data [3] Mar 10 12:29:35.68: [ 1092]: <-- data [2] Mar 10 12:29:37.00: [ 1092]: --> [2:OK] Mar 10 12:29:37.00: [ 1092]: <-- [9:AT+FRH=3\r] Mar 10 12:29:37.38: [ 1092]: --> [7:CONNECT] Mar 10 12:29:38.50: [ 1092]: --> HDLC<5:FF C8 31 45 8F> Mar 10 12:29:38.55: [ 1092]: --> [2:OK] Mar 10 12:29:38.55: [ 1092]: SEND recv MCF (message confirmation) Mar 10 12:29:38.56: [ 1092]: DELAY 70 ms Mar 10 12:29:38.56: [ 1092]: SEND FAX (000000040): FROM root@pbx00009 TO 21 (page 1 of 1 sent in 0:33) Mar 10 12:29:38.62: [ 1092]: SEND FAX (000000040): FROM root@pbx00009 TO 21 (docq/doc31.ps;c0 sent in 0:33) Mar 10 12:29:39.57: [ 1092]: <-- [9:AT+FTH=3\r] Mar 10 12:29:39.62: [ 1092]: --> [7:CONNECT] Mar 10 12:29:39.62: [ 1092]: <-- HDLC<3:FF C8 DF> Mar 10 12:29:39.62: [ 1092]: <-- data [3] Mar 10 12:29:39.62: [ 1092]: <-- data [2] Mar 10 12:29:40.93: [ 1092]: --> [2:OK] Mar 10 12:29:40.93: [ 1092]: MODEM input buffering enabled Mar 10 12:29:40.93: [ 1092]: <-- [5:ATH0\r] Mar 10 12:29:41.36: [ 1092]: --> [10:NO CARRIER] Mar 10 12:29:41.36: [ 1092]: MODEM No carrier Mar 10 12:29:41.36: [ 1092]: MODEM set DTR OFF Mar 10 12:29:41.36: [ 1092]: STATE CHANGE: SENDING -> MODEMWAIT (timeout 5) Mar 10 12:29:41.36: [ 1092]: SESSION END RECEIVER: ----------------------- Mar 10 12:28:48.54: [ 4936]: SESSION BEGIN 000000056 34916330001 Mar 10 12:28:48.54: [ 4936]: HylaFAX (tm) Version 4.2.1 Mar 10 12:28:48.54: [ 4936]: MODEM set XON/XOFF/FLUSH: input ignored, output disabled Mar 10 12:28:48.54: [ 4936]: <-- [4:ATA\r] Mar 10 12:28:56.50: [ 4936]: --> [7:CONNECT] Mar 10 12:28:56.50: [ 4936]: ANSWER: FAX CONNECTION DEVICE '/dev/ttyS0' Mar 10 12:28:56.50: [ 4936]: STATE CHANGE: ANSWERING -> RECEIVING Mar 10 12:28:56.50: [ 4936]: MODEM input buffering enabled Mar 10 12:28:56.50: [ 4936]: RECV FAX: begin Mar 10 12:28:56.50: [ 4936]: MODEM input buffering disabled Mar 10 12:28:56.50: [ 4936]: <-- HDLC<32:FF C0 04 AD 00 55 12 9E 36 86 62 82 1A 04 14 2E B6 94 04 6A A6 4E CE 96 F6 76 04 2C 74 4C 74 8C> Mar 10 12:28:56.50: [ 4936]: <-- data [32] Mar 10 12:28:56.50: [ 4936]: <-- data [2] Mar 10 12:28:56.53: [ 4936]: --> [7:CONNECT] Mar 10 12:28:56.53: [ 4936]: <-- HDLC<23:FF C0 02 0E AE 2E A6 CA E6 76 96 16 2E F6 72 04 04 04 04 04 04 04 04> Mar 10 12:28:56.53: [ 4936]: <-- data [23] Mar 10 12:28:56.53: [ 4936]: <-- data [2] Mar 10 12:28:56.56: [ 4936]: --> [7:CONNECT] Mar 10 12:28:56.56: [ 4936]: <-- HDLC<10:FF C8 01 00 76 5F 23 01 FB C0> Mar 10 12:28:56.56: [ 4936]: <-- data [10] Mar 10 12:28:56.56: [ 4936]: <-- data [2] Mar 10 12:28:59.66: [ 4936]: --> [2:OK] Mar 10 12:28:59.66: [ 4936]: <-- [9:AT+FRH=3\r] Mar 10 12:28:59.88: [ 4936]: --> [7:CONNECT] Mar 10 12:29:01.54: [ 4936]: --> HDLC<25:FF C0 C2 0E AE 2E A6 CA E6 76 96 16 2E F6 72 04 04 04 04 04 04 04 04 51 6E> Mar 10 12:29:01.55: [ 4936]: --> [2:OK] Mar 10 12:29:01.55: [ 4936]: REMOTE TSI "NothingSetup" Mar 10 12:29:01.55: [ 4936]: <-- [9:AT+FRH=3\r] Mar 10 12:29:01.57: [ 4936]: --> [7:CONNECT] Mar 10 12:29:01.89: [ 4936]: --> HDLC<8:FF C8 C1 00 44 1E 63 22> Mar 10 12:29:01.93: [ 4936]: --> [2:OK] Mar 10 12:29:01.93: [ 4936]: REMOTE wants 14400 bit/s Mar 10 12:29:01.93: [ 4936]: REMOTE wants A4 page width (215 mm) Mar 10 12:29:01.93: [ 4936]: REMOTE wants unlimited page length Mar 10 12:29:01.93: [ 4936]: REMOTE wants 3.85 line/mm Mar 10 12:29:01.93: [ 4936]: REMOTE wants 1-D MH Mar 10 12:29:01.93: [ 4936]: RECV training at v.17 14400 bit/s Mar 10 12:29:01.93: [ 4936]: MODEM set XON/XOFF/DRAIN: input ignored, output generated Mar 10 12:29:01.93: [ 4936]: <-- [11:AT+FRM=145\r] Mar 10 12:29:03.71: [ 4936]: --> [7:CONNECT] Mar 10 12:29:05.49: [ 4936]: MODEM set XON/XOFF/DRAIN: input ignored, output disabled Mar 10 12:29:05.49: [ 4936]: RECV: TCF 2520 bytes, 0% non-zero, 2520 zero-run Mar 10 12:29:05.49: [ 4936]: --> [10:NO CARRIER] Mar 10 12:29:05.49: [ 4936]: DELAY 75 ms Mar 10 12:29:05.57: [ 4936]: TRAINING succeeded Mar 10 12:29:05.57: [ 4936]: <-- [9:AT+FTH=3\r] Mar 10 12:29:05.62: [ 4936]: --> [7:CONNECT] Mar 10 12:29:05.62: [ 4936]: <-- HDLC<3:FF C8 21> Mar 10 12:29:05.62: [ 4936]: <-- data [3] Mar 10 12:29:05.62: [ 4936]: <-- data [2] Mar 10 12:29:06.94: [ 4936]: --> [2:OK] Mar 10 12:29:06.94: [ 4936]: MODEM input buffering enabled Mar 10 12:29:06.94: [ 4936]: MODEM set XON/XOFF/FLUSH: input ignored, output generated Mar 10 12:29:06.94: [ 4936]: <-- [11:AT+FRM=146\r] Mar 10 12:29:07.96: [ 4936]: --> [7:CONNECT] Mar 10 12:29:07.96: [ 4936]: RECV: begin page Mar 10 12:29:08.42: [ 4936]: RECV/CQ: Bad 1D pixel count, row 170, got 1771, expected 1728 Mar 10 12:29:13.55: [ 4936]: RECV/CQ: Bad 1D pixel count, row 480, got 2916, expected 1728 Mar 10 12:29:13.55: [ 4936]: RECV/CQ: Bad 1D pixel count, row 481, got 2667, expected 1728 Mar 10 12:29:16.49: [ 4936]: RECV/CQ: Bad 1D pixel count, row 571, got 1755, expected 1728 Mar 10 12:29:16.57: [ 4936]: RECV/CQ: Bad 1D pixel count, row 572, got 1933, expected 1728 Mar 10 12:29:18.39: [ 4936]: RECV/CQ: Bad 1D pixel count, row 653, got 803, expected 1728 Mar 10 12:29:18.47: [ 4936]: RECV/CQ: Bad 1D pixel count, row 654, got 1692, expected 1728 Mar 10 12:29:23.44: [ 4936]: RECV/CQ: Bad 1D pixel count, row 823, got 1679, expected 1728 Mar 10 12:29:25.07: [ 4936]: RECV/CQ: Bad 1D pixel count, row 869, got 2042, expected 1728 Mar 10 12:29:28.49: [ 4936]: RECV/CQ: Bad 1D pixel count, row 1039, got 29, expected 1728 Mar 10 12:29:28.49: [ 4936]: RECV/CQ: Bad 1D pixel count, row 1043, got 0, expected 1728 Mar 10 12:29:28.49: [ 4936]: RECV/CQ: Bad 1D pixel count, row 1044, got 0, expected 1728 Mar 10 12:29:28.49: [ 4936]: RECV/CQ: Bad 1D pixel count, row 1045, got 0, expected 1728 Mar 10 12:29:28.49: [ 4936]: RECV/CQ: Bad 1D pixel count, row 1046, got 0, expected 1728 Mar 10 12:29:28.90: [ 4936]: RECV/CQ: Adjusting for RTC found at row 1043 Mar 10 12:29:28.90: [ 4936]: RECV: 1043 total lines, 10 bad lines, 2 consecutive bad lines Mar 10 12:29:28.90: [ 4936]: RECV: end page Mar 10 12:29:28.90: [ 4936]: --> [10:NO CARRIER] Mar 10 12:29:28.90: [ 4936]: <-- [9:AT+FRH=3\r] Mar 10 12:29:30.17: [ 4936]: --> [7:CONNECT] Mar 10 12:29:31.33: [ 4936]: --> HDLC<5:FF C8 F4 CC 66> Mar 10 12:29:31.33: [ 4936]: --> [2:OK] Mar 10 12:29:31.33: [ 4936]: RECV recv EOP (no more pages or documents) Mar 10 12:29:31.33: [ 4936]: DELAY 70 ms Mar 10 12:29:31.40: [ 4936]: <-- [9:AT+FTH=3\r] Mar 10 12:29:31.56: [ 4936]: --> [7:CONNECT] Mar 10 12:29:31.56: [ 4936]: <-- HDLC<3:FF C8 31> Mar 10 12:29:31.56: [ 4936]: <-- data [3] Mar 10 12:29:31.56: [ 4936]: <-- data [2] Mar 10 12:29:32.87: [ 4936]: --> [2:OK] Mar 10 12:29:32.87: [ 4936]: RECV send MCF (message confirmation) Mar 10 12:29:32.87: [ 4936]: <-- [9:AT+FRH=3\r] Mar 10 12:29:32.87: [ 4936]: RECV FAX (000000056): from NothingSetup, page 1 in 0:27, INF, 3.85 line/mm, 1-D MH, 14400 bit/s Mar 10 12:29:32.87: [ 4936]: RECV FAX (000000056): recvq/fax000000045.tif from NothingSetup, route to <unspecified>, 1 pages in 0:36 Mar 10 12:29:34.10: [ 4936]: --> [7:CONNECT] Mar 10 12:29:35.28: [ 4936]: --> HDLC<5:FF C8 DF 59 6F> Mar 10 12:29:35.28: [ 4936]: --> [2:OK] Mar 10 12:29:35.28: [ 4936]: MODEM input buffering enabled Mar 10 12:29:35.28: [ 4936]: RECV FAX: bin/faxrcvd "recvq/fax000000045.tif" "ttyS0" "000000056" "" "" "" Mar 10 12:29:35.28: [ 4936]: RECV FAX: end Mar 10 12:29:35.28: [ 4936]: SESSION END I hope any of you can give any tip or any idea about which can be the problem now, because i don't know what more things i could try. Thanks in advance. PD: I've tried to connect directly from the server to the receiver with a cable, and use faxanswer but i haven't been able to make it work. The receiver never answers. Any idea? -- Diego Chaparro Grupo de Sistemas y Comunicaciones Universidad Rey Juan Carlos C/ Tulipan s/n - 28933 Mostoles dchaparro@xxxxxxxxxxxxxxxxxx || dchaparro@xxxxxxx ____________________ HylaFAX(tm) Users Mailing List _______________________ To subscribe/unsubscribe, click http://lists.hylafax.org/cgi-bin/lsg2.cgi On UNIX: mail -s unsubscribe hylafax-users-request@xxxxxxxxxxx < /dev/null *To learn about commercial HylaFAX(tm) support, mail sales@xxxxxxxxx*