<br><br><div class="gmail_quote">On Tue, Sep 20, 2011 at 4:43 PM, Adam Moffett <span dir="ltr"><<a href="mailto:adamlists@plexicomm.net">adamlists@plexicomm.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
If I have a 4 port Digium FXS card and a single port PRI card on the same asterisk box, is it expected that I'd be able to plug a fax machine into the analog FXS port and have no problems sending or receiving faxes? Our connection to the Telco is on the PRI obviously.<br>
<br>
I don't recall the specific card models that we have, but I can check if it matters.<br>
<br>
Does the version of asterisk or Zaptel matter?<br>
<br>
My related question is this: In the scenario described above does the audio pass directly from one card to the other through the PCI bus or does it have to somehow be processed by software?<br>
<br></blockquote><div><br>Nobody can say for sure. It is not a supported configuration. I can tell you that I have had great success and wasted days messing around with this configuration. <br><br>It is usually the other side's fax machine, a cheap all in-one, or it is TX and RX gains, or IRQs, or......<br>
<br>Questions to ask are<br>1. Is this for your system or are you installing for someone else? You could look very bad if the proper expectations are not set. It may take a great deal of trial and error to get to an acceptable level, if you can even do that based on need.<br>
<br>2. Needs, if fax is part of the lifeblood, then this route may not be the best. If it doesn't hurt to ask someone to resend or whatever, then go for it.<br><br>Just remember the gotchas, IRQs, TX RX gain settings, echo can when bridged =no. <br>
<br>Again, it has never been a supported configuration by Digium, and everyone that has dealt with faxing in Asterisk especially on different systems will tell you that you won't know until you try. And even then, is it worth days of your time trying to get it as close to a POTS line as possible?<br>
<br>Another issue I have run into are the Digium FXS daughter boards getting fried somehow. I punch on a 66 block now and put on surge protection after frying six modules in as many years. Something like this <a href="http://www.digitaltele.com/ProductInfo.aspx?productid=HCO">http://www.digitaltele.com/ProductInfo.aspx?productid=HCO</a><br>
<br>I have never had to do that on the FXS side but now it is just standard for all single pairs I do. I will know in the next year or two if it helps. No idea what is frying the daughterboards. Must be the fax machine.<br>
<br>Thanks,<br>Steve T<br><br>Thanks,<br>Steve T </div></div>