<div dir="ltr">If the ATA is using a FaxBack server, that server would be most likely be relaying the fax over SIP providers that support T.38 or very clean G711u pass-through to reach the PSTN further up the line, or some traditional telephony (POTS modem bank, T1, etc.).</div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr">Regards,<div><br></div><div><p style="font-family:helvetica,arial,sans-serif;font-size:12px;margin:0px;padding:0px 0px 20px;color:rgb(0,0,0)"><strong>Calvin Ellison</strong><br>Voice Services Engineer<br><a href="mailto:calvin.ellison@voxox.com" style="text-decoration:none;color:rgb(14,123,174)" target="_blank">calvin.ellison@voxox.com</a><br>+1 (213) 285-0555<br><br>-----------------------------------------------<br><strong><a href="http://www.voxox.com/" style="text-decoration:none;color:rgb(14,123,174)" target="_blank">voxox.com</a> </strong><br>9276 Scranton Rd, Suite 200<br>San Diego, CA 92121<br></p><img src="http://cdn.voxox.com/img/voxox-logo.png" alt="Voxox" style="color:rgb(0,0,0);font-family:'Times New Roman';font-size:medium"><br></div></div></div></div></div></div>
<br><div class="gmail_quote">On Tue, Mar 17, 2015 at 8:56 AM, Jay Hennigan <span dir="ltr"><<a href="mailto:jay@west.net" target="_blank">jay@west.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On 3/17/15 9:29 AM, Oren Yehezkely wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
This is quite interesting.<br>
Did you use a special kind of ATA?<br>
</blockquote>
<br></span>
Yes, the Audiocodes MP202B with fax-to-https.<span class=""><br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
What did you use between the ATA and server A? Was it G711?<br>
If so how could it work on a 3G connection?<br>
</blockquote>
<br></span>
It's sent as https. That's the trick to the whole thing. The fax data is stored and forwarded as TCP after the fact, hence no worries about moderate packet loss, jitter, etc.<br>
<br>
What I'm trying to wrap my head around is what goes on the other end. Something has to receive the https fax, extract the destination number, and connect to the PSTN (ideally via TDM such as a PRI) to deliver the document to the ultimate endpoint. Is there an Audiocodes big-brother to the ATA for this? If not, what are people using?<br>
<br>
In addition, because of the store-and-forward nature, there needs to be a means of notifying the sending fax of the (delayed) failure. Apparently some third-party implementations send the failure report as email, but I can see logistical problems with this in a large office where there are multiple users of a common fax machine. I would like the option that a failure report be sent as fax to the originating machine.<div class="HOEnZb"><div class="h5"><br>
<br>
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