2009/2/27 Matthew Fredrickson <[email protected]> > I have a couple of suggestions: > <snip> > > Olivier wrote: > > > > > > 2009/2/25 stoffell <[email protected] <mailto:[email protected]>> > > > > Hi all, > > > > I wanted to switch from my current setup (mISDN) to the native dahdi > > with b410p support (wcb4xp). All works fine for normal phone calls > > but not for faxing. Faxes are distorted, if arriving at all, and > > hylafax logs the usual bad stuff (HDLC frame not byte-oriented.) > > > > > > What about outgoing faxes ? > > > > > > > > Our setup uses a digium b410p card with asterisk 1.6, latest libpri > > and dahdi, hylafax with iaxmodem, and all this on 1 machine. > > > > chan_dahdi.conf contains: > > faxdetect=both > > > > When receiving a fax call, hylafax (iaxmodem) answers the call after > > the obligatory wait of 3 seconds (fax detection) but to me it seems > > that echo cancellation is still being done. > > > > > > Theory is that any echo canceller hearing a 2100Hz fax signal would halt > > itself, so I wouldn't search in that direction first. > > > > Have you tried native 1.6 sendFax, receiveFax ? > > Maybe it would improve fax performance. > > > > > > > > Any pointers on this or workarounds? We're back to our old misdn > > setup for now ;) > > > > Here's some output from "dahdi show channel 1" (the one that had the > > fax connection going), i cut out some non-related stuff : > > *CLI> dahdi show channel 4 > > Signalling Type: ISDN BRI Point to Point > > Owner: DAHDI/4-1 > > Real: DAHDI/4-1 > > Callwait: <None> > > Threeway: <None> > > Confno: -1 > > DSP: yes > > Busy Detection: no > > TDD: no > > Relax DTMF: no > > Dialing/CallwaitCAS: 0/0 > > Default law: alaw > > Fax Handled: yes > > Pulse phone: no > > DND: no > > Echo Cancellation: > > 128 taps > > (unless TDM bridged) currently ON > > PRI Flags: Call > > PRI Logical Span: Implicit > > Actual Confinfo: Num/0, Mode/0x0000 > > Actual Confmute: No > > > > > > > > Regards, > > stoffell > > > >
For curiosity, could improve Fax reception with wcb4xxp driver ? Which asterisk version did you precisely pick ? You mentioned 1.6.
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