We have a new issue. Normally the reception user transfers calls and announces the caller to the phone user before transfer. But, when the receptionist has a caller on hold, the transfer of a subsequent caller is blind - i.e. it just transfers to the extension without allowing the receptionist to announce the caller to the phone user.
We tested this at the customer site using a phone extension that was in idle mode, not on DND, not on FWD.
We tested this in-house as well on our own UC520, and the same issue exists.
The phone at the customer site is a 7962, ours is a 7975.