CUCM 12.5 using 8841 phones.
DN is Forward No Answer Internal to another DN . As soon as the call forwards, the phone originating the call experiences a significant loss of volume. You can hear it in the ring back and then when the party answers voice volume is very low. The volume setting on all devices involved is up at max. Happens every time. From any phone. Calling either DN directly works fine. Only happens on the forward.
