<div dir="ltr">Looks like it's a problem with the way H.323 to H.323 calls work.<div><br></div><div>Unlike SIP, H.323 uses TerminalCapabilitySet messages to advertise to both sides all possible capabilities/codecs between the 2 sides then the master gets to pick.</div><div><br></div><div>On the call leg between Avaya and SME, Avaya gets chosen as master and picks G.711a.</div><div><br></div><div>On the call leg between SME and CUCM 11.5, CUCM 11.5 is chosen as master and picks G.711u.</div><div><br></div><div>You then don't have any universal transcoding/MTP resources I assume to handle the mismatch.</div><div><br></div><div>You need a way to force a codec across the full call path. I'd suggest using SIP between SME and CUCM 11.5 rather than H.323 ICT.</div><div><br></div><div>If it has to be H.323 ICT, you may be able to try forcing MTP Required on the H.323 gateway config for Avaya in the SME cluster.</div></div><br><div class="gmail_quote"><div dir="ltr">On Wed, Dec 5, 2018 at 2:07 PM Nilson Costa <<a href="mailto:nilsonlino@gmail.com">nilsonlino@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div dir="ltr"><div>Hello all</div><div><br></div><div>I´m facing another type of issue now, it´s about call drop on inbound calls</div><div>I have the following new scenario</div><div><br></div><div>Avaya --H.323--> CUCM SME(8.5(1)) --ICT trunk--> CUCM 11.5 --SIP--> CIPC</div><div><br></div><div>In this case when I call to one Avaya extension the call goes normally</div><div>the problem comes when a Avaya extension calls me the call drops as soon as I answer the call drops</div><div><br></div><div>attached the call logs</div><div><br></div><div>Calling - 57841</div><div>called - 20000<br></div><div><br></div><div><br></div><div>Can someone help me find out why is it failing?<br></div><div><br><div dir="ltr" class="m_-3773815573730139297gmail_signature"><div dir="ltr">Nilson Lino da Costa Junior<br></div></div></div></div></div>
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