<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Does the command “fax-relay ecm disable” on dial peer do anything when you only have T.38 configured globally without fallback? I thought fax-relay would only kick in with fallback not actual T.38 but I guess it could disable ecm with T.38/H323/SIP.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>fax-relay ecm disable<o:p></o:p></p><p class=MsoNormal>http://www.cisco.com/en/US/docs/ios/12_3/vvf_c/cisco_ios_fax_services_over_ip_application_guide/t38.html#wp1156099<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Voice service voip<o:p></o:p></p><p class=MsoNormal> fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback none<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Where ecm disable made the faxes illegible<o:p></o:p></p><p class=MsoNormal><a href="http://www.gossamer-threads.com/lists/cisco/voip/130593">http://www.gossamer-threads.com/lists/cisco/voip/130593</a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>show call active fax brief<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Having some faxes fail, I suspect the root cause is something else (packet loss) and ecm disable might help, but is not the real problem. Planning to enabled t.38 redundancy.<o:p></o:p></p></div></body></html>