I noticed another site was working ok and tried some testing and it was working ok... it had the command "mgcp modem passthrough voip redundancy" removed.<br><br>I removed that command from the remote router that was not working and it started to work. Go figure. I guess I will go with pure luck until Verizon supports T.38 :)<br>
<br>thanks<br><br><div class="gmail_quote">On Wed, Jun 20, 2012 at 1:03 PM, Nick Matthews <span dir="ltr"><<a href="mailto:matthnick@gmail.com" target="_blank">matthnick@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
They were probably working out of pure luck.<br><br>The difference between a passthrough call and normal G.711 isn't as significant as it sounds.<br><br>In passthrough:<br>-The echo canceller is disabled (fax machines enable theirs locally)<br>
-DTMF is disabled<br>-Jitter buffer is extended (the router holds packets longer before playing them)<br><br>So there's a pretty decent chance that any given fax may work over G711. <br><span class="HOEnZb"><font color="#888888"><br>
-nick</font></span><div class="HOEnZb"><div class="h5"><br><br><div class="gmail_quote">
On Wed, Jun 20, 2012 at 1:30 PM, Mathew Miller <span dir="ltr"><<a href="mailto:miller.mathew@gmail.com" target="_blank">miller.mathew@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Debug ccsip message from a failed outbound call shows normal call clearing... <br><br>Jun 20 10:18:09.072: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:<br>Sent: <br>SIP/2.0 200 OK<br>Via: SIP/2.0/TCP 10.203.191.228:5060;branch=z9hG4bK1074173b53f0a1<br>
From: "Main Fax" <<a href="mailto:sip%3AXXXXXXX@10.203.191.228" target="_blank">sip:XXXXXXX@10.203.191.228</a>>;tag=2368178~e952bc0c-4f58-439d-b667-bfcb0cb2837d-35295113<br>To: <sip:<a href="tel:13127523690" value="+13127523690" target="_blank">13127523690</a>@10.X.X.240>;tag=17088A78-28F<br>
Date: Wed, 20 Jun 2012 15:18:09 GMT<br>Call-ID: <a href="mailto:dceaa00-fe11e98d-37d03-e4bfcb0a@10.203.191.228" target="_blank">dceaa00-fe11e98d-37d03-e4bfcb0a@10.203.191.228</a><br>Server: Cisco-SIPGateway/IOS-12.x<br>CSeq: 103 BYE<br>
Reason: Q.850;cause=16<br>
Content-Length: 0<br><br><br><img src="" alt=""><div><div><br>
<br><br><br><div class="gmail_quote">On Wed, Jun 20, 2012 at 12:08 PM, Paul <span dir="ltr"><<a href="mailto:asobihoudai@yahoo.com" target="_blank">asobihoudai@yahoo.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
What do your 'debug sip messages' and your 'SIP stack' traces tell you about when/how the FAX calls are failing?<br>
<br>
<br>
<br>
<br>
________________________________<br>
From: Mathew Miller <<a href="mailto:miller.mathew@gmail.com" target="_blank">miller.mathew@gmail.com</a>><br>
To: Cisco VOIP <<a href="mailto:cisco-voip@puck.nether.net" target="_blank">cisco-voip@puck.nether.net</a>><br>
Sent: Wednesday, June 20, 2012 12:44 PM<br>
Subject: [cisco-voip] Verizon SIP -->CUBE-->Remote MGCP FXS<br>
<div><div><br>
<br>
Hello All,<br>
<br>
I have a centralized CUCM 8.6 cluster with a Verizon centralized sip trunk service coming into a cube with 15.2.t2a. <br>
<br>
I have several remote site with 2921's with VIC3-4FXSDID cards that are MGCP controlled. When these were initially rolled out we tested faxes in and out and they seemed to work just fine. Recently they have stopped working and I am unable to figure out why. I have seem some posts that maybe MGCP fax passthough will not work with verizon because they don't support nse only protocol based.… But I am confused about why it worked previously and stopped work now….<br>
<br>
I can see inbound/outbound fax calls come in and setup as G711 calls, but the calls never completed. <br>
<br>
<br>
>From the cube.. <br>
voice service voip<br>
no ip address trusted authenticate<br>
address-hiding<br>
allow-connections sip to sip<br>
no supplementary-service sip refer<br>
redirect ip2ip<br>
fax protocol pass-through g711ulaw<br>
no fax-relay sg3-to-g3 <br>
modem passthrough nse codec g711ulaw redundancy<br>
sip<br>
bind control source-interface Loopback1<br>
bind media source-interface Loopback1<br>
header-passing<br>
localhost dns:<a href="http://XXXXXX.globalipcom.com" target="_blank">XXXXXX.globalipcom.com</a><br>
no update-callerid<br>
early-offer forced<br>
midcall-signaling passthru<br>
g729 annexb-all<br>
sip-profiles 2<br>
<br>
<br>
>From the remote MGCP router. <br>
<br>
mgcp dtmf-relay voip codec all mode out-of-band<br>
mgcp rtp unreachable timeout 1000 action notify<br>
mgcp modem passthrough voip mode nse<br>
mgcp modem passthrough voip redundancy<br>
mgcp package-capability rtp-package<br>
mgcp package-capability sst-package<br>
mgcp package-capability pre-package<br>
mgcp default-package mo-package<br>
no mgcp package-capability res-package<br>
no mgcp package-capability fxr-package<br>
no mgcp timer receive-rtcp<br>
mgcp sdp simple<br>
mgcp fax t38 inhibit<br>
<br>
Any ideas would be appreciated…<br>
<br>
Thanks<br>
<br>
<br>
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