<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><blockquote type="cite"></blockquote>Hi folks,<br><blockquote type="cite"></blockquote><span class="Apple-tab-span" style="white-space:pre"> </span>This may be a slightly off-topic FreeSWITCH question, but here goes...<br><blockquote type="cite"></blockquote><font class="Apple-style-span" color="#144FAE"><br></font><blockquote type="cite"></blockquote><span class="Apple-tab-span" style="white-space:pre"> </span>I am having issues trying to figure out the source of latency in circuits we LCR to, it seems to be somewhat of a guessing game. I am embarking on creating a tool to measure this latency so we can test carriers more rapidly when deciding whether to use them or not.<br><blockquote type="cite"></blockquote><font class="Apple-style-span" color="#144FAE"><br></font><blockquote type="cite"></blockquote><span class="Apple-tab-span" style="white-space:pre"> </span>Before I re-invent the wheel, I'd love to know what others do to ensure latency is at a minimum on the circuits they buy from carriers OR if there are specific things to tweak in FreeSWITCH that I'm unaware of that somehow would help this. I can't imagine there are, but maybe I've missed something.</div><div><br></div><div><span class="Apple-tab-span" style="white-space:pre"> </span>It is my belief that some of the carriers we are using are behind Asterisk boxes that are always taking on media and are adding an encode/decode step to the path, resulting in some latency, as I can't find any evidence of late packets or high jitter on our box <-> carrier.<br><blockquote type="cite"></blockquote><font class="Apple-style-span" color="#144FAE"><br></font><blockquote type="cite"></blockquote><span class="Apple-tab-span" style="white-space:pre"> </span>For us, latency seems most noticable when we have callers on cell phones using a conference bridge. The latency nears 800-1000ms from when a person speaks to when they are heard on the other cell phone. I have tried to tweak our own conference bridge settings but I really don't think that's going to make a difference if my theory of the issue being upstream is correct. VoIP <-> VoIP conferencing has none of this issue.<br><blockquote type="cite"></blockquote><font class="Apple-style-span" color="#144FAE"><br></font><blockquote type="cite"></blockquote><span class="Apple-tab-span" style="white-space:pre"> </span>Any experience that folks can offer here is appreciated. Obviously getting a direct RTP stream from the carrier doing the conversion to PSTN would be best, but it has a tendency to require a lot of minutes or be expensive to do yourself.<br><blockquote type="cite"></blockquote><font class="Apple-style-span" color="#144FAE"><br></font><blockquote type="cite"></blockquote><font class="Apple-style-span" color="#144FAE"><br></font><blockquote type="cite"></blockquote>Thanks,<br><blockquote type="cite"></blockquote><font class="Apple-style-span" color="#144FAE" face="Arial" size="3"><span class="Apple-style-span" style="font-size: 11px;"><br></span></font><blockquote type="cite"></blockquote><span class="Apple-style-span" style="font-family: Arial; font-size: 11px; ">Darren Schreiber</span><br><blockquote type="cite"></blockquote><span class="Apple-style-span" style="font-family: Arial; font-size: 11px; ">Co-Founder - the 2600hz Project</span><br><blockquote type="cite"></blockquote><span class="Apple-style-span" style="font-family: Arial; font-size: 11px; ">(415) 886-7900 - </span><span class="Apple-style-span" style="font-family: Arial; font-size: 11px; "><a href="http://www.2600hz.org/">www.2600hz.org</a></span><br><blockquote type="cite"></blockquote><font class="Apple-style-span" color="#144FAE" face="Arial" size="3"><span class="Apple-style-span" style="font-size: 11px;"><br></span></font><blockquote type="cite"></blockquote><span class="Apple-style-span" style="font-family: Arial; "><i><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 11px; ">Join us in January for FreeSWITCH Training in Australia!</span></font></i></span><br><blockquote type="cite"></blockquote><span class="Apple-style-span" style="font-family: Arial; "><i><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 11px; ">Visit <a href="http://www.voipkb.com/">www.voipkb.com</a> for more information</span></font></i></span><br><blockquote type="cite"></blockquote><font class="Apple-style-span" color="#144FAE"><br></font><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div><div>
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