before update it was working well here is the log 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 T4 expired in phase T30_PHASE_B_RX, state 6 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Retry number 2 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Changing from phase T30_PHASE_B_RX to T30_PHASE_B_TX 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW FAX Set rx type 0 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW FAX Set tx type 4 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 DCS: 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 .... ...0= Store and forward Internet fax (T.37): Not set 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 .... .0..= Real-time Internet fax (T.38): Not set 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 .... 0...= 3G mobile network: Not set 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 .... ..1.= Receive fax: Set 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 ..10 00..= Selected data signalling rate: V.17 14400bps 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 .1.. ....= R8x7.7lines/mm and/or 200x200pels/25.4mm: Set 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 1... ....= 2-D coding: Set 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 .... ..00= Recording width: 215mm +- 1% 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 .... 10..= Recording length: Unlimited 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 .111 ....= Minimum scan line time: 0ms 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 0... ....= Extension indicator: Not set 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Changing from state 6 to 4 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Sending ident 'boophone.com' 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Tx: TSI without final frame tag 2011-04-15 16:54:07.685484 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Tx: ff 03 43 6d 6f 63 2e 65 6e 6f 68 70 6f 6f 62 20 20 20 20 20 20 20 20 2011-04-15 16:54:09.265684 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Send complete in phase T30_PHASE_B_TX, state 4 2011-04-15 16:54:09.265684 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 DCS: 2011-04-15 16:54:09.265684 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 .... ...0= Store and forward Internet fax (T.37): Not set 2011-04-15 16:54:09.265684 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 .... .0..= Real-time Internet fax (T.38): Not set 2011-04-15 16:54:09.265684 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 .... 0...= 3G mobile network: Not set 2011-04-15 16:54:09.265684 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 .... ..1.= Receive fax: Set 2011-04-15 16:54:09.265684 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 ..10 00..= Selected data signalling rate: V.17 14400bps 2011-04-15 16:54:09.265684 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 .1.. ....= R8x7.7lines/mm and/or 200x200pels/25.4mm: Set 2011-04-15 16:54:09.265684 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 1... ....= 2-D coding: Set 2011-04-15 16:54:09.265684 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 .... ..00= Recording width: 215mm +- 1% 2011-04-15 16:54:09.265684 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 .... 10..= Recording length: Unlimited 2011-04-15 16:54:09.265684 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 .111 ....= Minimum scan line time: 0ms 2011-04-15 16:54:09.265684 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 0... ....= Extension indicator: Not set 2011-04-15 16:54:09.265684 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Tx: DCS with final frame tag 2011-04-15 16:54:09.265684 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Tx: ff 13 83 00 e2 78 2011-04-15 16:54:09.546048 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Send complete in phase T30_PHASE_B_TX, state 4 2011-04-15 16:54:09.626076 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Send complete in phase T30_PHASE_B_TX, state 4 2011-04-15 16:54:09.626076 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Changing from state 4 to 5 2011-04-15 16:54:09.626076 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Changing from phase T30_PHASE_B_TX to T30_PHASE_C_NON_ECM_TX 2011-04-15 16:54:09.626076 [DEBUG] mod_spandsp_fax.c:296 FLOW FAX Set rx type 0 2011-04-15 16:54:09.626076 [DEBUG] mod_spandsp_fax.c:296 FLOW FAX Set rx type 0 2011-04-15 16:54:09.626076 [DEBUG] mod_spandsp_fax.c:296 FLOW FAX Set tx type 7 2011-04-15 16:54:12.645314 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Send complete in phase T30_PHASE_C_NON_ECM_TX, state 5 2011-04-15 16:54:12.645314 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Changing from phase T30_PHASE_C_NON_ECM_TX to T30_PHASE_B_RX 2011-04-15 16:54:12.645314 [DEBUG] mod_spandsp_fax.c:296 FLOW FAX Set rx type 4 2011-04-15 16:54:12.645314 [DEBUG] mod_spandsp_fax.c:296 FLOW FAX Set tx type 0 2011-04-15 16:54:12.645314 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Start T4 2011-04-15 16:54:12.645314 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Changing from state 5 to 6 2011-04-15 16:54:13.166347 [DEBUG] mod_nibblebill.c:572 Received request via SESSION_HEARTBEAT! 2011-04-15 16:54:13.166347 [DEBUG] mod_nibblebill.c:433 Attempting to bill at $0.17304 per minute to account 9999999999999 2011-04-15 16:54:13.166347 [DEBUG] mod_nibblebill.c:491 30 seconds passed since last bill time of 2011-04-15 16:53:43 2011-04-15 16:54:13.166347 [DEBUG] mod_nibblebill.c:498 Billing $0.086548 to 9999999999999 (Call: 1132765120@67.205.80.135 / 0.000009 so far) 2011-04-15 16:54:13.166347 [DEBUG] mod_nibblebill.c:321 Doing update query [UPDATE accounts SET cash=cash-0.086548 WHERE id='9999999999999'] 2011-04-15 16:54:13.288037 [DEBUG] mod_nibblebill.c:366 Doing lookup query [SELECT cash AS nibble_balance FROM accounts WHERE id='9999999999999'] 2011-04-15 16:54:13.293107 [DEBUG] mod_nibblebill.c:376 Retrieved current balance for account 9999999999999 (balance = 6.655555) 2011-04-15 16:54:16.105756 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 T4 expired in phase T30_PHASE_B_RX, state 6 2011-04-15 16:54:16.105756 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Too many retries. Giving up. 2011-04-15 16:54:16.105756 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Changing from phase T30_PHASE_B_RX to T30_PHASE_D_TX 2011-04-15 16:54:16.105756 [DEBUG] mod_spandsp_fax.c:296 FLOW FAX Set rx type 0 2011-04-15 16:54:16.105756 [DEBUG] mod_spandsp_fax.c:296 FLOW FAX Set tx type 4 2011-04-15 16:54:16.105756 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Changing from state 6 to 3 2011-04-15 16:54:16.105756 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Tx: DCN with final frame tag 2011-04-15 16:54:16.105756 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Tx: ff 13 fb 2011-04-15 16:54:17.165849 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Send complete in phase T30_PHASE_D_TX, state 3 2011-04-15 16:54:17.245860 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Send complete in phase T30_PHASE_D_TX, state 3 2011-04-15 16:54:17.245860 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Disconnecting 2011-04-15 16:54:17.245860 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Changing from phase T30_PHASE_D_TX to T30_PHASE_E 2011-04-15 16:54:17.245860 [DEBUG] mod_spandsp_fax.c:296 FLOW FAX Set rx type 0 2011-04-15 16:54:17.245860 [DEBUG] mod_spandsp_fax.c:296 FLOW FAX Set tx type 1 2011-04-15 16:54:17.245860 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Changing from state 3 to 2 2011-04-15 16:54:18.245661 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Send complete in phase T30_PHASE_E, state 2 2011-04-15 16:54:18.245661 [DEBUG] mod_spandsp_fax.c:333 ============================================================================== 2011-04-15 16:54:18.245661 [DEBUG] mod_spandsp_fax.c:345 Fax processing not successful - result (20) Received no response to DCS or TCF. 2011-04-15 16:54:18.245661 [DEBUG] mod_spandsp_fax.c:350 Remote station id: 33456809528 2011-04-15 16:54:18.245661 [DEBUG] mod_spandsp_fax.c:351 Local station id: boophone.com 2011-04-15 16:54:18.245661 [DEBUG] mod_spandsp_fax.c:352 Pages transferred: 0 2011-04-15 16:54:18.245661 [DEBUG] mod_spandsp_fax.c:354 Total fax pages: 1 2011-04-15 16:54:18.245661 [DEBUG] mod_spandsp_fax.c:355 Image resolution: 8031x7700 2011-04-15 16:54:18.245661 [DEBUG] mod_spandsp_fax.c:356 Transfer Rate: 14400 2011-04-15 16:54:18.245661 [DEBUG] mod_spandsp_fax.c:358 ECM status off 2011-04-15 16:54:18.245661 [DEBUG] mod_spandsp_fax.c:359 remote country: 2011-04-15 16:54:18.245661 [DEBUG] mod_spandsp_fax.c:360 remote vendor: 2011-04-15 16:54:18.245661 [DEBUG] mod_spandsp_fax.c:361 remote model: 2011-04-15 16:54:18.245661 [DEBUG] mod_spandsp_fax.c:363 ============================================================================== 2011-04-15 16:54:18.245661 [DEBUG] switch_core_session.c:954 Send signal sofia/external/0033456809528 [BREAK] 2011-04-15 16:54:18.245661 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Changing from state 2 to 32 2011-04-15 16:54:18.245661 [DEBUG] mod_spandsp_fax.c:296 FLOW T.30 Changing from phase T30_PHASE_E to T30_PHASE_CALL_FINISHED 2011-04-15 16:54:18.245661 [DEBUG] mod_spandsp_fax.c:296 FLOW FAX Set rx type 9 2011-04-15 16:54:18.245661 [DEBUG] mod_spandsp_fax.c:296 FLOW FAX FAX exchange complete 2011-04-15 16:54:18.245661 [DEBUG] mod_spandsp_fax.c:296 FLOW FAX Set tx type 9 2011-04-15 16:54:18.245661 [DEBUG] mod_spandsp_fax.c:296 FLOW FAX FAX exchange complete 2011-04-15 16:54:18.265918 [DEBUG] switch_core_codec.c:141 sofia/external/0033456809528 Restore previous codec PCMU:0. my dialplan <extension name="sendfax"> <condition field="destination_number" expression="^sendfax$"> <action application="set" data="fax_enable_t38_request=false"/> <action application="set" data="fax_enable_t38=true"/> <action application="txfax" data="${fax_path}"/> <action application="hangup"/> </condition> </extension> Thanks ! Franck