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Hello, The Multitech VOIP line supports T38 and I have tested it. It
works great. You will need a public IP to make it work. Very expensive
though. T38 Is not compatible with Asterisk.<br>
<br>
<br>
Scott Wolfe wrote:<br>
<blockquote cite="mid022201c53b85$b680ca30$fb01000a@americanlegend.com"
type="cite">
<pre wrap="">I have been on the same path although I am using a TDM400. No matter what I
did I could not get a fax to go through. Yesterday I moved the * server
outside my firewall and the rest of the network and now I am making more
progress. I blame it on old network hardware. I have two accounts, one with
Broadvoice and the other with LiveVoip. The Broadvoice fax is going through
with out any problems. LiveVoip faxing still fails. I would like to use
LiveVoip so I will keep at it.
-Scott
----- Original Message -----
From: "Moody" <a class="moz-txt-link-rfc2396E" href="mailto:asterisk.user@gmail.com"><asterisk.user@gmail.com></a>
To: "Asterisk Users Mailing List - Non-Commercial Discussion"
<a class="moz-txt-link-rfc2396E" href="mailto:asterisk-users@lists.digium.com"><asterisk-users@lists.digium.com></a>
Sent: Thursday, April 07, 2005 7:52 AM
Subject: Re: [Asterisk-Users] T.38 fax with SIP devices
</pre>
<blockquote type="cite">
<pre wrap="">Hello Mark,
I have been working on a similar plan but am still looking for
reasonable/tested hardware - can you tell me what devices you are
using?
Thanks,
Jonathon
On Apr 7, 2005 7:01 AM, Mark Dutton <a class="moz-txt-link-rfc2396E" href="mailto:replies@datamerge.com.au"><replies@datamerge.com.au></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi there
I have a SIP ATA with a fax machine attached and a SIP FXO gateway to
</pre>
</blockquote>
</blockquote>
<pre wrap=""><!---->the
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre wrap="">PSTN. When I try to send faxes in either direction, I get nothing but
</pre>
</blockquote>
</blockquote>
<pre wrap=""><!---->stony
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre wrap="">silence. I have changed the gateway and the ATA to peer to peer mode to
</pre>
</blockquote>
</blockquote>
<pre wrap=""><!---->test
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre wrap="">them and they happily do the T.38 thing and faxes flow.
It seems that they initially negotiate a G.729 codec, which is what I
</pre>
</blockquote>
</blockquote>
<pre wrap=""><!---->want
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre wrap="">and then when the receiving end detects the fax machine, it wants to
re-negotiate and use the t38fax codec. This is the working the Micronet
devices use at least.
When I put the units into proxy mode and run them through Asterisk, they
fail at the negotiation stage.
Now I have learned from my dealings with Asterisk and the newsgroup that
Asterisk does not do T.38. However, why should it not let devices do
</pre>
</blockquote>
</blockquote>
<pre wrap=""><!---->T.38?
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre wrap="">My debug messages from Asterisk don't show it saying no, but the
</pre>
</blockquote>
</blockquote>
<pre wrap=""><!---->gateways
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre wrap="">don't wont' setup the T.38 on Asterisk.
I have chanded sip.conf to allow=all and there are no explicit rules in
</pre>
</blockquote>
</blockquote>
<pre wrap=""><!---->the
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre wrap="">registrations for the gateways.
Does anyone have an idea here?
For this venture to be truly usable, I have to be able to get FAX
</pre>
</blockquote>
</blockquote>
<pre wrap=""><!---->working at
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre wrap="">this basic level.
Regards
Mark Dutton
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<pre wrap=""><!---->
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</blockquote>
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