Two departments have their own call-park slot to park calls. Which feature on Cisco Unified CME allows one department to answer a call for another department?

Call park places an already-answered active call into a shared slot for later retrieval and cannot be used to answer a call that is still ringing at another department's phone.

Call forward redirects incoming calls to a different destination before they are answered and does not give another department the ability to pick up a ringing call.

Call transfer moves an already-answered call to another extension and has no mechanism for allowing a different department to answer a ringing call.

Pickup-group assigns phones to named or numbered groups via the pickup-group command under ephone-dn configuration. A user in one department can answer a ringing call from another department by dialing the designated pickup group code or pressing a configured softkey. This is specifically designed for cross-group call answering, unlike call park which only retrieves already-held calls.

Barge-in allows a third party to join an already-active two-party call and cannot be used to answer a call that is ringing but not yet connected.