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<p class=MsoNormal>Here is some supplemental information regarding my previous
email. Here is a summary of the problem.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>RouteList-1<o:p></o:p></p>
<p class=MsoNormal> H323-HW-RG<o:p></o:p></p>
<p class=MsoNormal> MGCP-GW-RG<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I make a call that uses Route List (RL-1). The first
call is successful call via the H323-HW-RG. I then disconnect the T1
cable to the H323 GW (creating a failover scenario) and my second call fails
over successfully to the MGCP-GW-RG. I make a third call, which again
uses MGCP-GW-RG and the call fails. All other subsequent calls also fail.
<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I ran a CCM trace and I see that on the second call attempt
(first screenshot below) the H323 GW (10.10.32.2) sends back a H.225
RELEASE_COMP message with Cause i = 0x08E089 – Temporary Failure. CUCM
responds to this cause code by sending an MGCP CRCX message to the failover GW
(10.10.32.1) thereby resulting in a successful call.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>In the second screenshot where I made the third failed call
attempt you’ll notice that the H.323 GW also sends a RELEASE_COMP message
but it has a different cause code Cause I = 0x080081 – Unallocated/Unassigned
Number. As a result of this cause code CUCM does not send the MGCP CRCX
message to the failover MGCP GW and the call ultimately fails. Any
ideas on how to modify this behavior?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><img width=1280 height=776 id="Picture_x0020_2"
src="cid:image001.png@01CA6859.88EECD50"><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><img width=1280 height=776 id="Picture_x0020_4"
src="cid:image002.png@01CA6859.88EECD50"><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Mark Marquez <br>
<b>Sent:</b> Monday, November 16, 2009 4:42 PM<br>
<b>To:</b> 'cisco-voip@puck.nether.net'<br>
<b>Subject:</b> CUCM Route List<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Are there any special rules regarding H.323 and MGCP
gateways configured within the same CUCM Route List. I have a route list
with two route groups. RG1 has the H.323 GW. RG2 has the MGCP GW.
<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>RL-1<o:p></o:p></p>
<p class=MsoNormal>
RG1 (H.323)<o:p></o:p></p>
<p class=MsoNormal>
RG2 (MGCP)<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>In the above configuration, failover to the MGCP GW
doesn’t work. <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>RL-1<o:p></o:p></p>
<p class=MsoNormal>
RG2 (MGCP)<o:p></o:p></p>
<p class=MsoNormal>
RG1 (H.323)<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I modify the Route List to include RG2 and then RG1 (as
illustrated above) and failover works as expected. FYI, I cause a
failover by unplugging the T1 cable from the controller.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I also tested just using RG1 or RG2 within RL-1 and calls
complete successfully. Any help is appreciated.<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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