<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1550782660531_169869">Antony,</div><div id="yui_3_16_0_ym19_1_1550782660531_169870"><br></div><div id="yui_3_16_0_ym19_1_1550782660531_169822" dir="ltr">Ok, I see what you are saying. Yes, than NAT occuring on our router. Asterisk server is on internal IP (192.168..)</div><div id="yui_3_16_0_ym19_1_1550782660531_169821" dir="ltr"><br></div><div id="yui_3_16_0_ym19_1_1550782660531_169820"># Now that I read what you say I think there might be 2 issues. "Randomness" is one, but I am not even sure we have it (randomness). All recent complains were from specific callers and we can replicate those.</div><div id="yui_3_16_0_ym19_1_1550782660531_169877"><br></div><div id="yui_3_16_0_ym19_1_1550782660531_169878">#What am I looking for? Should it be "tshark" or there is means within Asterisk application/configs to write those logs?</div><div id="yui_3_16_0_ym19_1_1550782660531_169879" dir="ltr">I haven't used "tshark" before. And more specifically, what am I looking for?</div><div id="yui_3_16_0_ym19_1_1550782660531_169880" dir="ltr"><br></div><div id="yui_3_16_0_ym19_1_1550782660531_169881" dir="ltr">Thank you!</div><div id="yui_3_16_0_ym19_1_1550782660531_169819"><br></div><div id="yui_3_16_0_ym19_1_1550782660531_169812">On Thursday 28 February 2019 at 17:40:28, Ivan Demkovitch wrote:<br id="yui_3_16_0_ym19_1_1550782660531_169782"><br id="yui_3_16_0_ym19_1_1550782660531_169783">><i id="yui_3_16_0_ym19_1_1550782660531_169784"> Noone connects to Asterisk box/server from outside. Callcentric SIP trunk
</i>><i id="yui_3_16_0_ym19_1_1550782660531_169785"> configured and Asterisk maintains connection to it itself.
</i><br id="yui_3_16_0_ym19_1_1550782660531_169786">Okay, I didn't actually mean "does anyone connect *inbound* to your Asterisk <br id="yui_3_16_0_ym19_1_1550782660531_169787">server" - I was more asking about the connectivity between the Asterisk box <br id="yui_3_16_0_ym19_1_1550782660531_169788">and (anything on) the Internet (eg: Callcentric), and whether there is NAT <br id="yui_3_16_0_ym19_1_1550782660531_169789">involved.<br id="yui_3_16_0_ym19_1_1550782660531_169790"><br id="yui_3_16_0_ym19_1_1550782660531_169791">><i id="yui_3_16_0_ym19_1_1550782660531_169792"> No special ports opened, nothing. Connection happens from us
</i>><i id="yui_3_16_0_ym19_1_1550782660531_169793"> to Callcentric and all calls routed in from CallcentricI don't know
</i>><i id="yui_3_16_0_ym19_1_1550782660531_169794"> exactly how it's doing it by it works.
</i><br id="yui_3_16_0_ym19_1_1550782660531_169795">Does your Asterisk box have an RFC1918 address (ie: 10.0.0.0/8. 172.16.0.0/12 <br id="yui_3_16_0_ym19_1_1550782660531_169796">or 192.168.0.0/16), or does it have a public IP address on its own interface?<br id="yui_3_16_0_ym19_1_1550782660531_169797"><br id="yui_3_16_0_ym19_1_1550782660531_169798">If the address on your Asterisk server falls in the RFC1918 range, then you <br id="yui_3_16_0_ym19_1_1550782660531_169799">have NAT occurring on your router, and this is known to cause one-way (or <br id="yui_3_16_0_ym19_1_1550782660531_169800">sometimes no-way) audio from time to time.<br id="yui_3_16_0_ym19_1_1550782660531_169801"><br id="yui_3_16_0_ym19_1_1550782660531_169802">><i id="yui_3_16_0_ym19_1_1550782660531_169803"> Debugging with "tshark" should be done on Asterisk machine I asume?
</i><br id="yui_3_16_0_ym19_1_1550782660531_169804">Yes, or else on any router between the Asterisk machine and the other end of <br id="yui_3_16_0_ym19_1_1550782660531_169805">the affected calls (ie: Callcentric). It's very probably simplest to do it on <br id="yui_3_16_0_ym19_1_1550782660531_169806">the Asterisk server, though.<br id="yui_3_16_0_ym19_1_1550782660531_169807"><br id="yui_3_16_0_ym19_1_1550782660531_169808"><br id="yui_3_16_0_ym19_1_1550782660531_169809">Antony.<br id="yui_3_16_0_ym19_1_1550782660531_169810"><br id="yui_3_16_0_ym19_1_1550782660531_169811"></div></div></body></html>