<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div>Use "tcpdump" utility, capture all udp packets for the faulty t38 fax call. </div><div><br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; background-color: transparent; font-style: normal;">T38 works reliably since asterisk 1.6. </div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; background-color: transparent; font-style: normal;">Wireshark utility shows t38 signals so it is possible to debug it.</div><div><br></div><div><br></div> <div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;">
<div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;"> <div dir="ltr"> <font size="2" face="Arial"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> Eric Wieling <EWieling@nyigc.com><br> <b><span style="font-weight: bold;">To:</span></b> "bryantz@zktech.com" <bryantz@zktech.com>; Asterisk Users Mailing List - Non-Commercial Discussion <asterisk-users@lists.digium.com> <br> <b><span style="font-weight: bold;">Sent:</span></b> Tuesday, January 1, 2013 12:10 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [asterisk-users] $100 Bounty: Level 3/Asterisk/Adtran T.38 Pass-Through<br> </font> </div> <br>
Do you use faxdetect at all? I'm wondering if faxdetect is required for Asterisk to set CHANNEL(t38passthrough) to 1. It is set to zero on fax calls passing through Asterisk.<br><br>-----Original Message-----<br>From: <a ymailto="mailto:asterisk-users-bounces@lists.digium.com" href="mailto:asterisk-users-bounces@lists.digium.com">asterisk-users-bounces@lists.digium.com</a> [mailto:<a ymailto="mailto:asterisk-users-bounces@lists.digium.com" href="mailto:asterisk-users-bounces@lists.digium.com">asterisk-users-bounces@lists.digium.com</a>] On Behalf Of Bryant Zimmerman<br>Sent: Thursday, December 27, 2012 6:52 PM<br>To: Asterisk Users Mailing List - Non-Commercial Discussion<br>Subject: Re: [asterisk-users] $100 Bounty: Level 3/Asterisk/Adtran T.38 Pass-Through<br><br>We process a lot of t.38 with Level 3 and our Asterisk servers. We do not prefer Adtran end points for t.38. <br><br><br>Thanks<br><br>Bryant Zimmerman (ZK Tech
Inc.)<br>616-855-1030 Ext. 2003<br><br><br>________________________________<br><br>From: "Danny Nicholas" <<a ymailto="mailto:danny@debsinc.com" href="mailto:danny@debsinc.com">danny@debsinc.com</a>><br>Sent: Thursday, December 27, 2012 4:51 PM<br>To: "Asterisk Users Mailing List - Non-Commercial Discussion" <<a ymailto="mailto:asterisk-users@lists.digium.com" href="mailto:asterisk-users@lists.digium.com">asterisk-users@lists.digium.com</a>><br>Subject: Re: [asterisk-users] $100 Bounty: Level 3/Asterisk/Adtran T.38 Pass-Through<br><br>Not certain that you actually do. I do know that T.38 can be a "dental"<br>experience with Asterisk, but some folks have succeeded with it.<br><br>-----Original Message-----<br>From: <a ymailto="mailto:asterisk-users-bounces@lists.digium.com" href="mailto:asterisk-users-bounces@lists.digium.com">asterisk-users-bounces@lists.digium.com</a><br>[mailto:<a ymailto="mailto:asterisk-users-bounces@lists.digium.com"
href="mailto:asterisk-users-bounces@lists.digium.com">asterisk-users-bounces@lists.digium.com</a>] On Behalf Of Eric Wieling<br>Sent: Thursday, December 27, 2012 3:37 PM<br>To: Asterisk Users Mailing List - Non-Commercial Discussion<br>Subject: Re: [asterisk-users] $100 Bounty: Level 3/Asterisk/Adtran T.38 Pass-Through<br><br>I was not aware you needed SpanDSP for T.38 passthrough.. How will that work with the UDPTL packets not going through Asterisk.<br><br>-----Original Message-----<br>From: <a ymailto="mailto:asterisk-users-bounces@lists.digium.com" href="mailto:asterisk-users-bounces@lists.digium.com">asterisk-users-bounces@lists.digium.com</a><br>[mailto:<a ymailto="mailto:asterisk-users-bounces@lists.digium.com" href="mailto:asterisk-users-bounces@lists.digium.com">asterisk-users-bounces@lists.digium.com</a>] On Behalf Of Danny Nicholas<br>Sent: Thursday, December 27, 2012 4:29 PM<br>To: Asterisk Users Mailing List - Non-Commercial
Discussion<br>Subject: Re: [asterisk-users] $100 Bounty: Level 3/Asterisk/Adtran T.38 Pass-Through<br><br>#1 I assume you have spandsp installed<br><br>#2 I'm guessing you got some hints from this thread -<br><a href="https://issues.asterisk.org/jira/browse/ASTERISK-18394" target="_blank">https://issues.asterisk.org/jira/browse/ASTERISK-18394</a> ?<br><br><br>--<br>_____________________________________________________________________<br>-- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs:<br>http://www.asterisk.org/hello<br><br>asterisk-users mailing list<br>To UNSUBSCRIBE or update options visit:<br>http://lists.digium.com/mailman/listinfo/asterisk-users<br><br><br>--<br>_____________________________________________________________________<br>-- Bandwidth and Colocation Provided by <a href="http://www.api-digital.com/" target="_blank">http://www.api-digital.com</a>
-- New to Asterisk? Join us for a live introductory webinar every Thurs:<br><a href="http://www.asterisk.org/hello" target="_blank">http://www.asterisk.org/hello</a><br><br>asterisk-users mailing list<br>To UNSUBSCRIBE or update options visit:<br><a href="http://lists.digium.com/mailman/listinfo/asterisk-users" target="_blank">http://lists.digium.com/mailman/listinfo/asterisk-users</a><br><br><br>--<br>_____________________________________________________________________<br>-- Bandwidth and Colocation Provided by <a href="http://www.api-digital.com/" target="_blank">http://www.api-digital.com</a> --<br>New to Asterisk? Join us for a live introductory webinar every Thurs:<br> <a href="http://www.asterisk.org/hello" target="_blank">http://www.asterisk.org/hello</a><br><br>asterisk-users mailing list<br>To UNSUBSCRIBE or update options visit:<br> <a
href="http://lists.digium.com/mailman/listinfo/asterisk-users" target="_blank">http://lists.digium.com/mailman/listinfo/asterisk-users</a><br><br><br> </div> </div> </div></body></html>