I need to have this enabled in CUCM7. I see it's a function available in CUCM 8.6 GUI in the SIP trunk config, but not in CUCM7 . My call transfers are having one way audio issues. My SIP provider said to try to enable this fuction. How do I do it in CUCM7 or on my 2811 CUBE running c2800nm-adventerprisek9_ivs-mz.124-22.YB5
