Have a TAC case opened up on this one. The engineer recommended I take out the attenuation and instead increase the echo tail lenght to 64ms to eliminate the echo before I change the attenuation. Still have fax problems but it seems that fixed the echo just as well as the attenuation settings did.
<br><br>Users reported problems faxing between ports/VG's now too, so i think this isn't PRI related at this point. going to send cisco some debugs from the vg248 and a sniffer trace soon as the network people get it setup. Will update the list if anything interesting pops up.
<br><br><div><span class="gmail_quote">On 6/11/07, <b class="gmail_sendername">Ed Leatherman</b> <<a href="mailto:ealeatherman@gmail.com">ealeatherman@gmail.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;">
<div>They are all 6608 T1 ports, i'm looking at the HTML page generated from the particular ports, not seeing clock glitches and conseq sevErrSecs (assuming those corelate to the stats that IOS spits out). If there are any CatOS commands that are the equivalent, I havent been able to figure them out.
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<div>Been running for years with nary a problem till this past week. Clock source is network, i haven't put in a service request yet for verizon to check their side though.<br><br> </div><div><span class="e" id="q_1131d47a14ba91e5_1">
<div><span class="gmail_quote">On 6/11/07, <b class="gmail_sendername">Jason Aarons (US)</b> <<a href="mailto:jason.aarons@us.didata.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">jason.aarons@us.didata.com
</a>> wrote:</span>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0px 0px 0px 0.8ex; padding-left: 1ex;">
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<p><span style="font-size: 11pt; color: rgb(31, 73, 125);">Show network clock</span></p>
<p><span style="font-size: 11pt; color: rgb(31, 73, 125);">Show controller t1 </span></p>
<p><span style="font-size: 11pt; color: rgb(31, 73, 125);"> </span></p>
<p><span style="font-size: 11pt; color: rgb(31, 73, 125);">Are you seeing clock slips errored seconds and what is your clock source? Have you checked other side for clocking/errors?</span></p>
<p><span style="font-size: 11pt; color: rgb(31, 73, 125);"> </span></p>
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<p><b><span style="font-size: 10pt;">From:</span></b><span style="font-size: 10pt;"> <a href="mailto:cisco-voip-bounces@puck.nether.net" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">cisco-voip-bounces@puck.nether.net
</a> [mailto:<a href="mailto:cisco-voip-bounces@puck.nether.net" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">cisco-voip-bounces@puck.nether.net</a>] <b>On Behalf Of </b>Ed Leatherman<br><b>Sent:
</b> Monday, June 11, 2007 4:24 PM<br><b>To:</b> ciscovoip<br><b>Subject:</b> [cisco-voip] Adjusting attenuation on PRI's for echo...</span></p></div>
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<p>Anyone had to adjust attenuation on PRI connections for echo and have it affect your fax machines? I made a small change to the inbound attenuation last Sunday (went from -1dB to -2dB). Users are reporting that all last week they had trouble receiving complete faxes (from multiple VG's). I hate to roll back the change because it seemed to fix our echo problem. Maybe I can increase the outbound attenuation at the same time I remove the previous change to make up for it?
<br><br>PS I hate fax machines.<br clear="all"><br>-- <br>Ed Leatherman<br>Senior Voice Engineer<br>West Virginia University<br>Telecommunications and Network Operations </p></span></div></div></div>
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</strong></p><p></p></div></blockquote></div><br><br clear="all"><br>-- <br>Ed Leatherman<br>Senior Voice Engineer<br>West Virginia University<br>Telecommunications and Network Operations
</span></div></blockquote></div><br><br clear="all"><br>-- <br>Ed Leatherman<br>Senior Voice Engineer<br>West Virginia University<br>Telecommunications and Network Operations