<br><br><div class="gmail_quote">2009/2/25 stoffell <span dir="ltr"><<a href="mailto:stoffell@gmail.com">stoffell@gmail.com</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi all,<br><br>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.)</blockquote>
<div><br>What about outgoing faxes ? <br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>
<br>Our setup uses a digium b410p card with asterisk 1.6, latest libpri and dahdi, hylafax with iaxmodem, and all this on 1 machine.<br><br>chan_dahdi.conf contains:<br>faxdetect=both<br><br>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.</blockquote>
<div><br>Theory is that any echo canceller hearing a 2100Hz fax signal would halt itself, so I wouldn't search in that direction first.<br><br>Have you tried native 1.6 sendFax, receiveFax ?<br>Maybe it would improve fax performance.<br>
</div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>
<br>Any pointers on this or workarounds? We're back to our old misdn setup for now ;)<br><br>Here's some output from "dahdi show channel 1" (the one that had the fax connection going), i cut out some non-related stuff :<br>
*CLI> dahdi show channel 4<br>Signalling Type: ISDN BRI Point to Point<br>Owner: DAHDI/4-1<br>Real: DAHDI/4-1<br>Callwait: <None><br>Threeway: <None><br>Confno: -1<br>DSP: yes<br>Busy Detection: no<br>TDD: no<br>
Relax DTMF: no<br>Dialing/CallwaitCAS: 0/0<br>Default law: alaw<br>Fax Handled: yes<br>Pulse phone: no<br>DND: no<br>Echo Cancellation:<br> 128 taps<br> (unless TDM bridged) currently ON<br>PRI Flags: Call<br>
PRI Logical Span: Implicit<br>Actual Confinfo: Num/0, Mode/0x0000<br>Actual Confmute: No<br><br><br><br>Regards,<br><font color="#888888">stoffell<br><br><br><br><br>
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