ATA has two modes, "Fax mode" and "Fax Passthrough" mode. Functionally they are both passthrough, but the "Fax Passthrough" mode will actually act like an IOS gateway configured for passthrough (negotiates codec/upspeeding) whereas the "Fax mode" just treats the call as a normal voice call with no fax tone detection or other bells and whistles.<br>
<br>You can switch modes by using a web browser to the ATA and setting the audio mode and connect mode parameters:<br>Fax Mode: audio mode = 0x00120012, connect mode doesn't matter<br>Fax passthrough: audio mode 0x00150015 , connect mode = 0x90000400<br>
<br>If your voice gateway on the far end is setup for NSE passthrough, I would recommend setting up the ATA for "Fax passthrough" if it is not already, and see if it helps out.<br><br><div class="gmail_quote">On Fri, Sep 4, 2009 at 11:18 AM, Countryman, Edward <span dir="ltr"><<a href="mailto:Edward.Countryman@provena.org">Edward.Countryman@provena.org</a>></span> wrote:<br>
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<p><span style="font-size: 11pt; color: rgb(31, 73, 125);">I have a remote site (50 users) trunked with a PRI to a 2821
router. I use ata186’s for fax machines. The users at this
site are reporting that many of the folks that used to be able fax to them
prior to moving in cannot now that they are on an ATA. The fax machine reports
“line failure” or “no fax detected” when this
occurs. Other sites can fax in no problem. The gateway is set up
for fax-pass-through and DTFM relay “Current GW Config” (?) and the
DSPware is current (28x). The ATA parameters of course are cryptic.
We are a CCM 61 shop</span></p>
<p><span style="font-size: 11pt; color: rgb(31, 73, 125);">I will likely go to tac but this is one of those problems that
is painful to troubleshoot. I was looking for thoughts and experiences on
resolving these types of issues. </span></p>
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