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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#000000" vlink="#000000"><div class=WordSection1><p class=MsoNormal>I’m looking for assistance solving this issue, and particularly how to check the device string in the configuration file, and/or how to change the sample rate of the audio stream sent to USB.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m not sure why you chose to unload on me for what you seem to be claiming is a well known issue, but from my searching does not appear to be well publicized. Nor am I sure what I may have said that would cause antagonization. I was merely looking for some assistance with an issue that I hoped maybe others had encountered and knew of a cause or solution.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>That said, here are some answers to your questions:<o:p></o:p></p><p class=MsoNormal>>>> why does it seem that most everyone has gone this route against the above sage wisdom<o:p></o:p></p><p class=MsoNormal>Where is this sage wisdom? I’m new to ASL. I read the wiki page. I saw no warnings against USB, in fact, I there were links to USB devices.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>>>> rather than using something more akin an e&m interface like the pci radio cards Jim designed<o:p></o:p></p><p class=MsoNormal>I don’t know Jim, don’t know where to buy his products, and there are no PCI interfaces on a Raspberry Pi.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>>>> the interface boards that plugged into an fxs? Port and broke out e&m, providing keying by polarity reversal of the battery voltage<o:p></o:p></p><p class=MsoNormal>An fxs port is an analog telephone port, isn’t it? Again, not available on a Raspberry Pi, and although I’m sure I could come up with a way to key the transmitter in question based on a reverse polarity battery signal, that does not seem like a very straightforward undertaking.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>>>> Apparently usb not so much and apparently this is a long standing problem with usb<o:p></o:p></p><p class=MsoNormal>I disagree. I’ve used plenty of USB audio devices in the past with no problems whatsoever. In fact, this very device works fine when used as a sound card on a PC. So if there are any longstanding issues, it would appear from a cursory glance to be with asterisk’s passing of the audio.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> App_rpt-users <app_rpt-users-bounces@lists.allstarlink.org> <b>On Behalf Of </b>Eric Fort<br><b>Sent:</b> Sunday, March 31, 2019 12:49<br><b>To:</b> Users of Asterisk app_rpt <app_rpt-users@lists.allstarlink.org><br><b>Subject:</b> Re: [App_rpt-users] USB fob choppy/stuttering audio<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal style='margin-bottom:12.0pt'>On Mar 31, 2019, at 9:08 AM, Bob Pyke <<a href="mailto:k6ecm1@gmail.com">k6ecm1@gmail.com</a>> wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal>Sorry, not with ASL. I found it best to let it set it, but I check to make sure. ASL is much better than the original based on CentOS. I’ve had the Linux mix it up, but not had that issue since DIAL and ASL.<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'>As Jim has said many times, “friends don’t let friends do USB” :-)<o:p></o:p></p><div id=AppleMailSignature><div><p class=MsoNormal>Thanks,<o:p></o:p></p></div><div><p class=MsoNormal>Bob<o:p></o:p></p></div><div><p class=MsoNormal>K6ECM<o:p></o:p></p></div><div><p class=MsoNormal>73<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><div><div id=aqm-original><div><div><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0><tr><td valign=top style='padding:.75pt .75pt .75pt .75pt'></td><td valign=top style='padding:.75pt .75pt .75pt .75pt'></td></tr></table></div></div></div></div></div></blockquote></div></div></blockquote><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>I have heard many times of the problems using usb with asterisk and app_rpt. So why does it seem that most everyone has gone this route against the above sage wisdom rather than using something more akin an e&m interface like the pci radio cards Jim designed and built or the interface boards that plugged into an fxs? Port and broke out e&m, providing keying by polarity reversal of the battery voltage. Both solutions work rock solid with no issues. Apparently usb not so much and apparently this is a long standing problem with usb. In thinking about this I’m also curious if the design files for the pci radio interface boards may be available as they’d likely be a good start for an update to a more current interface standard. <o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Eric <o:p></o:p></p></div><div><p class=MsoNormal>Af6ep <o:p></o:p></p></div></div></body></html>