<html><head><base href="x-msg://1568/"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Yes they mean very different things. <div><br></div><div>Now that I re-read the documentation I'm starting to doubt if I wasn't confused in my last email. It helps to think of it in terms of modem passthrough and fax passthrough (with modem passthrough being NSE-based and fax passthrough being protocol-based).</div><div><br><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div>-Ryan</div></span>
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<br><div><div>On Jan 22, 2010, at 3:07 PM, Lelio Fulgenzi wrote:</div><br class="Apple-interchange-newline"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div><div style="font-family: Verdana; font-size: 10pt; color: rgb(0, 0, 0); ">Are we seriously saying that when Cisco says "fax pass-through" and "fax passthrough" they mean different things?<br><br>oh boy.<br><br>---<br>Lelio Fulgenzi, B.A.<br>Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1<br>(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)<br>^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^<br>"Bad grammar makes me [sic]" - Tshirt<br><br><br>----- Original Message -----<br>From: "Ryan Ratliff" <<a href="mailto:rratliff@cisco.com">rratliff@cisco.com</a>><br>To: "Rhodium" <<a href="mailto:rhodium_uk@yahoo.co.uk">rhodium_uk@yahoo.co.uk</a>><br>Cc:<span class="Apple-converted-space"> </span><a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a><br>Sent: Friday, January 22, 2010 2:57:18 PM GMT -05:00 US/Canada Eastern<br>Subject: Re: [cisco-voip] Fwd: Cisco ATA Fax Confusion<br><br>The lack of hyphenation is because fax pass-through is modem passthrough, which is NSE based. This call is working because the ATA passes the fax tones on to the VG224 as NSEs and it recognizes them.<br><br>If we look at your config:<br>fax protocol t38 nse ls-redundancy 0 hs-redundancy 0 fallback pass-through g711ulaw<br><br>This means upon detection of the fax-tones (call outbound from VG224 to ATA) the VG will attempt to switch to T38. The fallback pass-through means that if T38 fails it will send NSEs as well. This is the part that is compatible with the ATA.<br><br>-Ryan<br><br>On Jan 22, 2010, at 1:42 PM, Rhodium wrote:<br><br>Hi Ryan,<br><br>I am using the terms as per the Cisco Press book "Fax, Modem, and Text for IP Telephony" by David Hanes and Gonzalo Salgueiro. Excellent reference!<br><br>I guess what is throwing me off is your lack of hyphenations in the terms pass-through and passthrough in your replies. I understand the following:<br><br>fax pass-through - Protocol based fax transmission<br>fax passthrough - NSE based fax transmission<br><br>As regards what I am seeing, yeah but the configuration doesn't imply that as one is setup for T.38 relay with pass-through fall back and the ATA is obviously only passthrough so I guess only a debug will answer that question as I was wondering whether the VG was falling back to NSE based passthrough for some reason.<br><br>To be honest, I wouldn't expect it to work at all so why I am asking this knowledgeable forum about it incase I missed something in the documentation.<br><br><br>Thank you for your reply as well as to all the other contributors.<br><br>Regards,<br><br>Jason<br><br><br><br><br><br>_______________________________________________<br>cisco-voip mailing list<br><a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a><br><a href="https://puck.nether.net/mailman/listinfo/cisco-voip">https://puck.nether.net/mailman/listinfo/cisco-voip</a><br></div></div></span></div><br></div></body></html>