We are running ios 15.1.3 T2 and when I enable call preserve MOH is invoking a MTP. We have to select Use MTP on the UCM to keep the call from dropping when transitioning from the call from HOLD. I believe MTP should not be required and are not on other gateways that are not run the Call Preserve feature. Why would Call Preserve cause MTP to be invoked? <div>
<br></div><div><br clear="all">Best Regards,<br><br>Mike Lydick<br><br><br>
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