Hans Bulfone wrote: >hi, > >i've just tried out the t.38 support of openpbx using a >canon pstn fax machine and a cisco as5300 gateway >(using sip). > >i've sent a (1-page, standard resolution) fax from the >fax machine via the cisco gateway to openpbx (checked >out from subversion today, using spandsp-0.0.3pre24). > >here's what i found out: > >1. i needed to use the ulaw codec and dtmfmode=inband, > else the call is not switched to t.38 and the fax > machine hangs up after a while. > (it's mentioned in the wiki, but only for transmitting > a fax) > > Correct. The fax tone will only be detected to prompt the switchover when the codec is Alaw or ulaw.
>2. i needed to disable ecm. when it is enabled the > fax transmission fails with PHASEESTATUS=31 > (Carrier lost during fax receive) after the page > has been transmitted. > > Interesting. We send lots of ECM FAX with the current code. If you cannot, we would like to work with you to find out why. There is probably some incompatibility we need to make the software more tolerant of. >with ecm disabled the fax is transferred successfully >and looks good. > > It can work just fine with or without ECM . Honest it can. :-) Steve _______________________________________________ Openpbx-users mailing list [email protected] http://lists.openpbx.org/mailman/listinfo/openpbx-users
