How far (physically) is the Asterisk server location from the location of the phones? Have you tried pinging the Asterisk server from the network to which the phones are connected? <br><br>As a rule of thumb, If the two sites are within 2500 miles of each other and the network connection between them is working properly, the round trip time for a 64 byte ping should be less than 100 ms, the round trip time should not vary from one ping to another by more than 2-5 ms (typical), and there should be virtually no dropped packets (well under
0.1%). <br><br>If your network does not meet these standards, then it may well be the cause of your problems. In that case, if you e-mail me a traceroute from the phone location to the Asterisk location as well as the output of a ping from the phone location to the Asterisk location (preferably including at least 100 repetitions), I will take a look at it and let you know what I think.
<br><br>If your network seems fine by the above standards, then you/we will have to pursue other Asterisk/SIP/RTP-related avenues of troubleshooting. <br><br>Regards,<br>Rusty<br><br><br><br><div><span class="gmail_quote">
On 1/9/06, <b class="gmail_sendername">Geoff Manning</b> <<a href="mailto:gmanning@zoom.com">gmanning@zoom.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Our users are experiencing some unacceptable delay when trying to have a<br>conversation. The delay is so noticeable that they keep stepping on each<br>others words and resort to calling the customers via cell phone.<br><br>
Here is the setup<br><br>SDSL Connection (PPPoA)<br>Speedtouch 610 SDSL Modem<br>3Com 2224PWR Plus Switch (phones on separate VLAN)<br>8 Cisco 796 Phones<br><br>All connecting to a remote Asterisk Server.<br><br>We found that the MTU for the SDSL modem was set to 1500 and I have since
<br>changed it to 1458 which is the ISP's recommended setting.<br><br>Can this MTU difference cause the delay my users are experiencing? All the<br>voice packets would become fragmented so it sounds logical.<br><br>And simply changing the MTU on the modem, will that fix it, I can't find a
<br>way to change it at the Cisco phone level.<br><br>Thanks,<br>Geoff Manning<br><br>_______________________________________________<br>--Bandwidth and Colocation provided by <a href="http://Easynews.com">Easynews.com</a>
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