<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi,<div class=""><br class=""></div><div class="">I have had no such problems on virtual hardware. Just make sure you load the dahdi module and make sure asterisk uses it (which it should by default if it’s loaded in kernel).</div><div class=""><br class=""></div><div class="">Look here:</div><div class=""><a href="https://wiki.asterisk.org/wiki/display/AST/Timing+Interfaces" class="">https://wiki.asterisk.org/wiki/display/AST/Timing+Interfaces</a></div><div class=""><br class=""></div><div class="">Regards</div><div class="">Walter</div><div class=""><br class=""></div><div class=""><div class=""><div style="color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><table class="x_MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="400" style="font-family: Helvetica; letter-spacing: normal; text-indent: 0px; text-transform: none; word-spacing: 0px; -webkit-text-stroke-width: 0px; width: 259.8pt;"><tbody class=""><tr class=""><td valign="top" class="" style="padding: 0in;"><br class=""></td></tr></tbody></table></div></div>
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<div><br class=""><blockquote type="cite" class=""><div class="">On 16 Jan 2018, at 11:37 PM, Matthew Ogden <<a href="mailto:matthew@ogden.co.za" class="">matthew@ogden.co.za</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Hi All<div class=""><br class=""></div><div class="">I know this is question is not completely SPCE related, but since Sipwise is using asterisk as a component, and more importantly, since so many of of the SPCE users understand those components, not just asterisk, I thought it an interesting enough question for the community.</div><div class=""><br class=""></div><div class="">All my own servers are are Virtual. Whether they be Asterisk or SPCE. I use VMWare as the hypervisor.</div><div class=""><br class=""></div><div class="">in my instance, SPCE does not seem to have a problem with timing, because the media relay can actually have small amounts of jitter and the edge devices (phones or PBXs), are sorting this out.</div><div class=""><br class=""></div><div class="">But in asterisk case, most things also work fine for boxes that run asterisk. Except for conferencing. In my case, Meetme seems to work better than conf-bridge (bad quality on meetme, but unusable on conf-bridge)</div><div class=""><br class=""></div><div class="">I know that in asterisk case the timer options are available instead of dadhi cards. I know that Linux can have different time resolutions of the kernel, though more modern systems system tro default to 10ms anyhow.</div><div class=""><br class=""></div><div class="">Does anyone out there consider themselves as a definitive guide on the subject? I know that the Sipwise guys and anyone else contributing to media relay projects probably see this as incredibly simple, but to me, I doesn't make sense that with all the new hardware available based around virtualization, to be able to have reliable timing sources or small enough timing resolutions to take 2x 20ms packets align, merge their sound them and send them to other system. </div><div class=""><br class=""></div><div class="">Kind Regards</div><div class=""><br class=""></div><div class="">Matthew Ogden</div><div class=""></div></div>
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