In my attempts to receive a fax from a PSTN fax machine, the transaction fails with error code 13 "Unexpected message received". Verbose logging is on for mod_fax. Here is an exerpt: ################################################# 2009-09-15 10:41:39.215123 [DEBUG] mod_fax.c:137 FLOW T.30 Rx: CFR with final frame tag 2009-09-15 10:41:39.215123 [DEBUG] mod_fax.c:137 FLOW T.30 Rx: ff 13 84 2009-09-15 10:41:39.215123 [DEBUG] mod_fax.c:137 FLOW T.30 In state 12 2009-09-15 10:41:39.215123 [DEBUG] mod_fax.c:137 FLOW T.30 Unexpected CFR received in state 12 ...... ======================================================================== ====== 2009-09-15 10:41:41.402707 [DEBUG] mod_fax.c:180 Fax processing not successful - result (13) Unexpected message received. 2009-09-15 10:41:41.402707 [DEBUG] mod_fax.c:185 Remote station id: ********** 2009-09-15 10:41:41.402707 [DEBUG] mod_fax.c:186 Local station id: SpanDSP Fax Ident 2009-09-15 10:41:41.402707 [DEBUG] mod_fax.c:187 Pages transferred: 0 2009-09-15 10:41:41.402707 [DEBUG] mod_fax.c:189 Total fax pages: 0 2009-09-15 10:41:41.402707 [DEBUG] mod_fax.c:190 Image resolution: 8031x3850 2009-09-15 10:41:41.402707 [DEBUG] mod_fax.c:191 Transfer Rate: 14400 2009-09-15 10:41:41.402707 [DEBUG] mod_fax.c:193 ECM status on 2009-09-15 10:41:41.402707 [DEBUG] mod_fax.c:194 remote country: 2009-09-15 10:41:41.402707 [DEBUG] mod_fax.c:195 remote vendor: 2009-09-15 10:41:41.402707 [DEBUG] mod_fax.c:196 remote model: 2009-09-15 10:41:41.402707 [DEBUG] mod_fax.c:198 ======================================================================== ====== ################################################# I have successfully received a fax from faxzero.com on this installation, as have I successfully sent a fax from freeswitch to the PSTN fax machine in question. I've been digging, but there doesn't seem to be a whole lot of information on faxing. I guess I could use a bit of direction. Any input is much appreciated. Thanks! -- Travis