Hi all, I'm trying to setup asterisk and spandsp to recieve fax transmissions. I got Asterisk to detect fax calls, it even tries to communicate, but the other side doesn't seem to send the main data. Instead it ends the communication with hangup. Have anybody got an idea? Thanks a lot. Jan Fousek This is a relevant part of the log: Jul 18 19:58:30 VERBOSE[20671] logger.c: -- Executing Answer("SIP/420543254384-b5dd", "") in new stack Jul 18 19:58:30 VERBOSE[20671] logger.c: -- Executing AbsoluteTimeout("SIP/420543254384-b5dd", "35") in new stack Jul 18 19:58:30 VERBOSE[20671] logger.c: -- Set Absolute Timeout to 35 Jul 18 19:58:30 VERBOSE[20671] logger.c: -- Executing Set("SIP/420543254384-b5dd", "FAXFILE=/var/spool/asterisk-fax/1153245510.15.tif") in new stack Jul 18 19:58:30 VERBOSE[20671] logger.c: -- Executing RxFAX("SIP/420543254384-b5dd", "/var/spool/asterisk-fax/1153245510.15.tif|debug") in new stack Jul 18 19:58:30 DEBUG[31032] chan_sip.c: Stopping retransmission on 'BW195830538180706-1588437227@193.138.78.20' of Response 23395782: Match Found Jul 18 19:58:32 DEBUG[31032] chan_sip.c: Auto destroying call '75243e2746f654975f4d37b743f9bd7c@127.0.0.1' Jul 18 19:58:33 DEBUG[31032] chan_sip.c: Auto destroying call '08623a2019baf62e4ae8d7781e24d8b1@127.0.0.1' Jul 18 19:58:33 DEBUG[20671] app_rxfax.c: FLOW Changed from phase 1 to 4 Jul 18 19:58:33 DEBUG[20671] app_rxfax.c: FLOW >>> DIS:Jul 18 19:58:33 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:33 DEBUG[20671] app_rxfax.c: 00Jul 18 19:58:33 DEBUG[20671] app_rxfax.c: ceJul 18 19:58:33 DEBUG[20671] app_rxfax.c: f4Jul 18 19:58:33 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:33 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:33 DEBUG[20671] app_rxfax.c: 81Jul 18 19:58:33 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:33 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:33 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:33 DEBUG[20671] app_rxfax.c: 18Jul 18 19:58:33 DEBUG[20671] app_rxfax.c: Jul 18 19:58:35 DEBUG[20671] app_rxfax.c: FLOW HDLC underflow in state 9 Jul 18 19:58:35 DEBUG[20671] app_rxfax.c: FLOW Changed from phase 4 to 3 Jul 18 19:58:36 DEBUG[20671] app_rxfax.c: FLOW HDLC carrier up Jul 18 19:58:36 DEBUG[20671] app_rxfax.c: FLOW HDLC framing OK Jul 18 19:58:37 DEBUG[20671] app_rxfax.c: FLOW <<< ???:Jul 18 19:58:37 DEBUG[20671] app_rxfax.c: 1aJul 18 19:58:37 DEBUG[20671] app_rxfax.c: Jul 18 19:58:37 DEBUG[20671] app_rxfax.c: FLOW ??? with final frame tag Jul 18 19:58:37 DEBUG[20671] app_rxfax.c: FLOW In state 9 Jul 18 19:58:37 DEBUG[20671] app_rxfax.c: FLOW HDLC carrier down Jul 18 19:58:38 DEBUG[20671] app_rxfax.c: FLOW T4 timeout in state 9 Jul 18 19:58:38 DEBUG[20671] app_rxfax.c: FLOW Changed from phase 3 to 4 Jul 18 19:58:38 DEBUG[20671] app_rxfax.c: FLOW >>> DIS:Jul 18 19:58:38 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:38 DEBUG[20671] app_rxfax.c: 00Jul 18 19:58:38 DEBUG[20671] app_rxfax.c: ceJul 18 19:58:38 DEBUG[20671] app_rxfax.c: f4Jul 18 19:58:38 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:38 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:38 DEBUG[20671] app_rxfax.c: 81Jul 18 19:58:38 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:38 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:38 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:38 DEBUG[20671] app_rxfax.c: 18Jul 18 19:58:38 DEBUG[20671] app_rxfax.c: Jul 18 19:58:40 DEBUG[20671] app_rxfax.c: FLOW HDLC underflow in state 9 Jul 18 19:58:40 DEBUG[20671] app_rxfax.c: FLOW Changed from phase 4 to 3 Jul 18 19:58:43 DEBUG[20671] app_rxfax.c: FLOW T4 timeout in state 9 Jul 18 19:58:43 DEBUG[20671] app_rxfax.c: FLOW Changed from phase 3 to 4 Jul 18 19:58:43 DEBUG[20671] app_rxfax.c: FLOW >>> DIS:Jul 18 19:58:43 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:43 DEBUG[20671] app_rxfax.c: 00Jul 18 19:58:43 DEBUG[20671] app_rxfax.c: ceJul 18 19:58:43 DEBUG[20671] app_rxfax.c: f4Jul 18 19:58:43 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:43 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:43 DEBUG[20671] app_rxfax.c: 81Jul 18 19:58:43 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:43 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:43 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:43 DEBUG[20671] app_rxfax.c: 18Jul 18 19:58:43 DEBUG[20671] app_rxfax.c: Jul 18 19:58:45 DEBUG[20671] app_rxfax.c: FLOW HDLC underflow in state 9 Jul 18 19:58:45 DEBUG[20671] app_rxfax.c: FLOW Changed from phase 4 to 3 Jul 18 19:58:48 DEBUG[20671] app_rxfax.c: FLOW T4 timeout in state 9 Jul 18 19:58:48 DEBUG[20671] app_rxfax.c: FLOW Changed from phase 3 to 4 Jul 18 19:58:48 DEBUG[20671] app_rxfax.c: FLOW >>> DIS:Jul 18 19:58:48 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:48 DEBUG[20671] app_rxfax.c: 00Jul 18 19:58:48 DEBUG[20671] app_rxfax.c: ceJul 18 19:58:48 DEBUG[20671] app_rxfax.c: f4Jul 18 19:58:48 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:48 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:48 DEBUG[20671] app_rxfax.c: 81Jul 18 19:58:48 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:48 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:48 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:48 DEBUG[20671] app_rxfax.c: 18Jul 18 19:58:48 DEBUG[20671] app_rxfax.c: Jul 18 19:58:50 DEBUG[20671] app_rxfax.c: FLOW HDLC underflow in state 9 Jul 18 19:58:50 DEBUG[20671] app_rxfax.c: FLOW Changed from phase 4 to 3 Jul 18 19:58:51 DEBUG[20671] app_rxfax.c: FLOW HDLC carrier up Jul 18 19:58:51 DEBUG[20671] app_rxfax.c: FLOW HDLC framing OK Jul 18 19:58:52 DEBUG[20671] app_rxfax.c: FLOW <<< ???:Jul 18 19:58:52 DEBUG[20671] app_rxfax.c: 1aJul 18 19:58:52 DEBUG[20671] app_rxfax.c: Jul 18 19:58:52 DEBUG[20671] app_rxfax.c: FLOW ??? with final frame tag Jul 18 19:58:52 DEBUG[20671] app_rxfax.c: FLOW In state 9 Jul 18 19:58:52 DEBUG[20671] app_rxfax.c: FLOW HDLC carrier down Jul 18 19:58:53 DEBUG[20671] app_rxfax.c: FLOW T4 timeout in state 9 Jul 18 19:58:53 DEBUG[20671] app_rxfax.c: FLOW Changed from phase 3 to 4 Jul 18 19:58:53 DEBUG[20671] app_rxfax.c: FLOW >>> DIS:Jul 18 19:58:53 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:53 DEBUG[20671] app_rxfax.c: 00Jul 18 19:58:53 DEBUG[20671] app_rxfax.c: ceJul 18 19:58:53 DEBUG[20671] app_rxfax.c: f4Jul 18 19:58:53 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:53 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:53 DEBUG[20671] app_rxfax.c: 81Jul 18 19:58:53 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:53 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:53 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:53 DEBUG[20671] app_rxfax.c: 18Jul 18 19:58:53 DEBUG[20671] app_rxfax.c: Jul 18 19:58:55 DEBUG[20671] app_rxfax.c: FLOW HDLC underflow in state 9 Jul 18 19:58:55 DEBUG[20671] app_rxfax.c: FLOW Changed from phase 4 to 3 Jul 18 19:58:56 DEBUG[20671] app_rxfax.c: FLOW HDLC carrier up Jul 18 19:58:56 DEBUG[20671] app_rxfax.c: FLOW HDLC framing OK Jul 18 19:58:58 DEBUG[20671] app_rxfax.c: FLOW <<< ???:Jul 18 19:58:58 DEBUG[20671] app_rxfax.c: 1aJul 18 19:58:58 DEBUG[20671] app_rxfax.c: Jul 18 19:58:58 DEBUG[20671] app_rxfax.c: FLOW ??? with final frame tag Jul 18 19:58:58 DEBUG[20671] app_rxfax.c: FLOW In state 9 Jul 18 19:58:58 DEBUG[20671] app_rxfax.c: FLOW HDLC carrier down Jul 18 19:58:58 DEBUG[20671] app_rxfax.c: FLOW T4 timeout in state 9 Jul 18 19:58:58 DEBUG[20671] app_rxfax.c: FLOW Changed from phase 3 to 4 Jul 18 19:58:58 DEBUG[20671] app_rxfax.c: FLOW >>> DIS:Jul 18 19:58:58 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:58 DEBUG[20671] app_rxfax.c: 00Jul 18 19:58:58 DEBUG[20671] app_rxfax.c: ceJul 18 19:58:58 DEBUG[20671] app_rxfax.c: f4Jul 18 19:58:58 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:58 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:58 DEBUG[20671] app_rxfax.c: 81Jul 18 19:58:58 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:58 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:58 DEBUG[20671] app_rxfax.c: 80Jul 18 19:58:58 DEBUG[20671] app_rxfax.c: 18Jul 18 19:58:58 DEBUG[20671] app_rxfax.c: Jul 18 19:59:01 DEBUG[20671] app_rxfax.c: FLOW HDLC underflow in state 9 Jul 18 19:59:01 DEBUG[20671] app_rxfax.c: FLOW Changed from phase 4 to 3 Jul 18 19:59:04 DEBUG[20671] app_rxfax.c: FLOW T4 timeout in state 9 Jul 18 19:59:04 DEBUG[20671] app_rxfax.c: FLOW Changed from phase 3 to 4 Jul 18 19:59:04 DEBUG[20671] app_rxfax.c: FLOW >>> DIS:Jul 18 19:59:04 DEBUG[20671] app_rxfax.c: 80Jul 18 19:59:04 DEBUG[20671] app_rxfax.c: 00Jul 18 19:59:04 DEBUG[20671] app_rxfax.c: ceJul 18 19:59:04 DEBUG[20671] app_rxfax.c: f4Jul 18 19:59:04 DEBUG[20671] app_rxfax.c: 80Jul 18 19:59:04 DEBUG[20671] app_rxfax.c: 80Jul 18 19:59:04 DEBUG[20671] app_rxfax.c: 81Jul 18 19:59:04 DEBUG[20671] app_rxfax.c: 80Jul 18 19:59:04 DEBUG[20671] app_rxfax.c: 80Jul 18 19:59:04 DEBUG[20671] app_rxfax.c: 80Jul 18 19:59:04 DEBUG[20671] app_rxfax.c: 18Jul 18 19:59:04 DEBUG[20671] app_rxfax.c: Jul 18 19:59:05 DEBUG[20671] app_rxfax.c: Got hangup Jul 18 19:59:05 DEBUG[20671] pbx.c: Extension s, priority 4 returned normally even though call was hung up Jul 18 19:59:05 DEBUG[20671] pbx.c: Function result is 'unavailable' Jul 18 19:59:05 DEBUG[20671] pbx.c: Function result is 'unavailable' Jul 18 19:59:05 DEBUG[20671] pbx.c: Function result is 's' Jul 18 19:59:05 DEBUG[20671] pbx.c: Function result is 'incomming' Jul 18 19:59:05 DEBUG[20671] pbx.c: Function result is 'SIP/420543254384-b5dd' Jul 18 19:59:05 DEBUG[20671] pbx.c: Function result is '(null)' Jul 18 19:59:05 DEBUG[20671] pbx.c: Function result is 'RxFAX' Jul 18 19:59:05 DEBUG[20671] pbx.c: Function result is '/var/spool/asterisk-fax/1153245510.15.tif|debug' Jul 18 19:59:05 DEBUG[20671] pbx.c: Function result is '2006-07-18 19:58:30' Jul 18 19:59:05 DEBUG[20671] pbx.c: Function result is '2006-07-18 19:58:30' Jul 18 19:59:05 DEBUG[20671] pbx.c: Function result is '2006-07-18 19:59:05' Jul 18 19:59:05 DEBUG[20671] pbx.c: Function result is '35' Jul 18 19:59:05 DEBUG[20671] pbx.c: Function result is '35' Jul 18 19:59:05 DEBUG[20671] pbx.c: Function result is 'ANSWERED' Jul 18 19:59:05 DEBUG[20671] pbx.c: Function result is 'DOCUMENTATION' Jul 18 19:59:05 DEBUG[20671] pbx.c: Function result is '(null)' Jul 18 19:59:05 DEBUG[20671] pbx.c: Function result is '1153245510.15' Jul 18 19:59:05 DEBUG[20671] pbx.c: Function result is '(null)'