<HTML dir=ltr><HEAD><TITLE>[cisco-voip] FAX relay vs. FAX passthrough</TITLE>
<META http-equiv=Content-Type content="text/html; charset=unicode">
<META content="MSHTML 6.00.6000.16414" name=GENERATOR></HEAD>
<BODY>
<DIV id=idOWAReplyText47937 dir=ltr>
<DIV dir=ltr><FONT face=Arial color=#000000 size=2>this is a sample dial-peer that I used to relay faxes from PSTN to a FAX server thorugh an H323 gateway</FONT></DIV>
<DIV dir=ltr> </DIV>
<DIV dir=ltr>dial-peer voice 345 voip<BR> description Test_Fax<BR> destination-pattern 345<BR> session protocol sipv2<BR> session target ipv4:x.x.x.x</DIV>
<DIV dir=ltr><STRONG> fax-relay ecm disable<BR></STRONG> dtmf-relay rtp-nte<BR> codec g711ulaw<BR> fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback cisco<BR> no vad</DIV>
<DIV dir=ltr> </DIV>
<DIV dir=ltr>here are some of my notes:</DIV>
<DIV dir=ltr> </DIV>
<DIV dir=ltr>*Regarding CM 4.x fax relay with T.38 protocol is supported in H323 mode only no T.38 with sip is supported (that is why I made the dial-peer on the gateway as my FAX server only supports T.38 with SIP)</DIV>
<DIV dir=ltr> </DIV>
<DIV dir=ltr>*Remember ro disable the ecm function under the dial-peer (the highlighted command) because this function sometimes makes problems with transmission of the fax.</DIV>
<DIV dir=ltr>*I didnot try using G.729 codec but it works fine with G.711 codec with me.</DIV>
<DIV dir=ltr> </DIV>
<DIV dir=ltr>A very useful command for debugging is <STRONG>debug voice call fax </STRONG>it will be very helpful with you (and I think it is the only debug command available for FAX debugguing)</DIV>
<DIV dir=ltr> </DIV>
<DIV dir=ltr><FONT face=Arial color=#000000 size=2></FONT> </DIV></DIV>
<DIV id=idSignature51472 dir=ltr>
<DIV><FONT face=Arial color=#000000 size=2>
<DIV class=ecsection1 style="MARGIN: auto 0in"><SPAN style="FONT-SIZE: 10pt; COLOR: #003366; FONT-FAMILY: Tahoma">Thanks and Best Regards<BR><B><BR>Ahmed A. Elnagar<BR></B>Network Field Engineer</SPAN></DIV>
<DIV class=ecsection1 style="MARGIN: auto 0in"><SPAN style="FONT-SIZE: 10pt; COLOR: #003366; FONT-FAMILY: Tahoma"></SPAN><SPAN style="FONT-SIZE: 6pt; COLOR: black; FONT-FAMILY: Tahoma"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN> </DIV>
<DIV class=ecsection1 style="MARGIN: auto 0in"><SPAN lang=ES style="FONT-SIZE: 10pt; COLOR: #003366; FONT-FAMILY: Tahoma; mso-ansi-language: ES">Advanced Computer Technology (ACT)<BR>16 Fawzy Ramah St.Off Shehab St.Mohandessin, Giza, Egypt <BR>Postal Code:12411 Cairo Egypt<BR></SPAN><SPAN style="FONT-SIZE: 6pt; COLOR: #003366; FONT-FAMILY: Tahoma"><BR></SPAN><SPAN class=ecspelle><B><SPAN lang=ES style="FONT-SIZE: 10pt; COLOR: #003366; FONT-FAMILY: Tahoma; mso-ansi-language: ES">Mob</SPAN></B></SPAN><B><SPAN style="FONT-SIZE: 10pt; COLOR: #003366; FONT-FAMILY: Tahoma">:</SPAN></B><SPAN style="FONT-SIZE: 10pt; COLOR: #003366; FONT-FAMILY: Tahoma"> +2010-2833868</SPAN><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma"><BR></SPAN><B><SPAN lang=ES style="FONT-SIZE: 10pt; COLOR: #003366; FONT-FAMILY: Tahoma; mso-ansi-language: ES">Website</SPAN></B><B><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma">: </SPAN></B><SPAN lang=ES style="FONT-SIZE: 10pt; COLOR: #003366; FONT-FAMILY: Tahoma; mso-ansi-language: ES">www.act-eg.com<BR><B>E-mail</B></SPAN><B><SPAN style="FONT-SIZE: 10pt; COLOR: #004600; FONT-FAMILY: Tahoma">: </SPAN></B><SPAN lang=ES style="FONT-SIZE: 10pt; COLOR: #003366; FONT-FAMILY: Tahoma; mso-ansi-language: ES"><A href="mailto:aelnagar@act-eg.com">aelnagar@act-eg.com</A></SPAN></DIV></FONT></DIV></DIV>
<DIV dir=ltr><BR>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> cisco-voip-bounces@puck.nether.net on behalf of Paul Choi<BR><B>Sent:</B> Mon 07-May-07 5:29 PM<BR><B>To:</B> cisco-voip@puck.nether.net<BR><B>Subject:</B> [cisco-voip] FAX relay vs. FAX passthrough<BR></FONT><BR></DIV>
<DIV>
<P><FONT size=2>I'm soliciting for opinions on using FAX relay as<BR>opposed to FAX passthrough.<BR><BR>We're using G.729 for FAX on a sizable cluster and<BR>would like to get FAX to work using this codec. I know<BR>that passthrough requires G.711 to work so I'd like to<BR>hear on any opinions for anyone that has successfully<BR>configured relay.<BR><BR>I'm changing the changing the protocol to Cisco FAX<BR>under voice service voip configuration mode. I'm not<BR>looking forward to configuring several VG248s for FAX<BR>relay either but I'll do whatever it takes.<BR><BR>Paul<BR><BR><BR><BR>____________________________________________________________________________________<BR>It's here! Your new message! <BR>Get new email alerts with the free Yahoo! Toolbar.<BR><A href="http://tools.search.yahoo.com/toolbar/features/mail/">http://tools.search.yahoo.com/toolbar/features/mail/</A><BR>_______________________________________________<BR>cisco-voip mailing list<BR>cisco-voip@puck.nether.net<BR><A href="https://puck.nether.net/mailman/listinfo/cisco-voip">https://puck.nether.net/mailman/listinfo/cisco-voip</A><BR></FONT></P></DIV></BODY></HTML>