<div>Dane--</div>
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<div>Is the CMM blade setup as H323 or MGCP? I would make sure either way that you make sure fax relay is turned off. I believe on the CMM blade in MGCP mode it is set to relay by default. Killed our faxes until I finally found that.</div>
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<div>Like Ed said, check to make sure your clocking is correct. That's enough to kill any fax.</div>
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<div>Scott<br><br></div>
<div class="gmail_quote">On Wed, Feb 18, 2009 at 7:07 AM, Ed Leatherman <span dir="ltr"><<a href="mailto:ealeatherman@gmail.com">ealeatherman@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">FWIW, Here is how we program our VG248 fax ports when we run into<br>issues.. have had fairly good success:<br>
<br>global telephony settings:<br>Passthrough Signaling : IOS Mode<br>Passthrough Codec: G.711 u-law<br><br>Port specific settings:<br>Call Control mode = Basic<br>Caller ID = Disabled<br>MWI Method = none<br>Fax Relay = Disabled<br>
<br>CCM Admin port settings, basically make sure to match the port config on the VG.<br>Call Control Mode = Basic<br>Caller ID = Disabled<br>MWI = none<br>Fax Relay = disabled<br><br>We don't have any CMM blades, only thing I can comment on is make sure<br>
clocking is correctly configured for your T1 ports, clock slip errors<br>kill faxes. Could be issue on the network too, one time we had a PIX<br>that was delaying packets every 20 seconds, basically killed any fax<br>traffic going thru it. Took us an embarrassing amount of time to track<br>
it down (with help from TAC).<br><br>Pass-through is definitely what you want to use assuming the call is G.711.<br><br>Hope that helps,<br>Ed<br>
<div class="Ih2E3d"><br>On Wed, Feb 18, 2009 at 9:27 AM, Dane <<a href="mailto:dane@pktloss.net">dane@pktloss.net</a>> wrote:<br>><br>> I have been getting reports of faxing issues since we moved to some<br>> new circuits. Faxes are connected to VG248s, new circuits are<br>
> connected to WS-SVC-CMM-6T1 and old circuits were connected to same<br>> 6509 but the port was on a 6608.<br>><br>> I noticed that on the 6608 ports you have the section for "Fax and<br>> Modem Parameters" however on the CMM-6T1 the ports don't have anything<br>
> related to faxing in there.<br>><br>> On the CMM-6T1 module config there is one item related to Fax mode<br>> that can be either Fax Passthrough or Fax Relay. Currently Fax<br>> Passthrough is selected.<br>
><br>> The fax machines are giving an error "poor line condition" or "busy no<br>> response", however there is really no consistency in the user reported<br>> errors. Sometimes it works, sometimes it doesn't. Different numbers<br>
> being called, different fax machines reporting the issues. I do know<br>> that this was not an issue prior to moving the circuits, so my guess<br>> is its the new circuits or simply related to the fact I am using these<br>
> CMM-6T1's now as opposed to the 6608.<br>><br>> I read about making sure the ECM was off on the fax machines and that<br>> speed was set to 9600.<br>><br>> Other than that anyone have any thoughts or suggestions on troubleshooting this?<br>
><br>> Thanks<br><br><br></div><font color="#888888">--<br>Ed Leatherman<br>Assistant Director, Voice Services<br>West Virginia University<br>Telecommunications and Network Operations<br></font>
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