<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Another thing you may want to do is try a simple ping test to the far end host. While this may not always be a reliable way to test lag given that the far end maybe just a proxy and your RTP may be terminating to another device, it still should give you a good idea what your lag times are at least on the signaling end of things. You could also do a traceroute to see how many hops your having to jump through as well. <div><br></div><div>You could use a tool like ngrep to actually see the sip signaling and copy out the media gateway from the SDP if you really wanted to, and do a ping on that.<br><div><br></div><div>I've done extensive work with international voip origination and termination, and typically I haven't had any problems unless it's going over satellite (lag) or there is a problem at the far end (usually pdd or quality issues). </div><div><br></div><div>If things keep up, I'd even consider running top during a call to see what kind of utilization your local server is at just to make sure something isn't wrong there either.</div><div><br></div><div>Hope this helps,</div><div><br></div><div>- Darren<br><div><div apple-content-edited="true"> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; 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: 0; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; 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 style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; 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 style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; 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 style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; 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 style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; 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><br class="Apple-interchange-newline"><br></div><div>_____________________________</div><div><br></div><div><a href="mailto:dmsessions@gmail.com">dmsessions@gmail.com</a></div><div><a href="http://www.darrensessions.com">http://www.darrensessions.com</a></div><div><font class="Apple-style-span" face="Arial"><span class="Apple-style-span" style="line-height: 14px; white-space: pre-wrap; ">_____________________________</span></font></div><div><br></div></span></div></span></div></span></div></span></div></span><br class="Apple-interchange-newline"></div></span><br class="Apple-interchange-newline"> </div><br><div><div>On Aug 18, 2008, at 10:41 AM, Nikhil Nair wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Hi,<br><br>I'm running a small Asterisk server in the UK, just for personal use. <br>I've been experimenting with various VoIP providers for international <br>calls to PSTN numbers, particularly to the US (often California). My <br>results, to date, have been very variable indeed, so much so that I'm <br>considering getting a suitable card and using the PSTN.<br><br>I have found a VoIP provider with an excellent reputation, and it gives <br>very good quality. However, I seem to get quite a bit of delay at times, <br>enough to make conversation awkward. As the setup at the far end was not <br>completely trivial, I'm not 100% sure the problem was in my connection, <br>but I'd like to test that.<br><br>Are there any US numbers I can call to get an Asterisk-style echo test? <br>Ideally, a California-based numnber, so I can try to call it from an <br>ordinary PSTN phone here, and compare calling via VoIP, and see if there's <br>an appreciable difference in the delay/quality. I don't anticipate using <br>this for very long, so it doesn't necessarily need to be a free service.<br><br>Failing that, does anyone have access to a US-based Asterisk server which <br>would allow me to make connections to its echo test? Presumably, if I had <br>this, I could rent a PSTN number from a US-based provider, and point it to <br>the appropriate SIP/IAX address. I expect my total usage would be just a <br>few minutes, though having the facility available for a few weeks would be <br>helpful, to allow me to play around with various options. Again, I'd be <br>willing to pay a modest amount for this.<br><br>Thanks in advance for any suggestions!<br><br>Best wishes,<br><br>Nikhil.<br><br><br>_______________________________________________<br>-- Bandwidth and Colocation Provided by <a href="http://www.api-digital.com">http://www.api-digital.com</a> --<br><br>AstriCon 2008 - September 22 - 25 Phoenix, Arizona<br>Register Now: <a href="http://www.astricon.net">http://www.astricon.net</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">http://lists.digium.com/mailman/listinfo/asterisk-users</a><br></div></blockquote></div><br></div></div></div></body></html>