Nortel Networks P0908544 Caller menu, The Caller menu contains:

Using the Attendant window 31
P0908544 Issue 01 Enterprise Edge Attendant Console User Guide
Caller menu
The Caller menu contains:
Answer Next answers the next call in the queue.
Hold places an active call on hold. The Hold button performs the
same function. Refer to Parking, holding and screening calls
on page 51.
Release disconnects the active call. The Release button performs the
same function.
Park parks the active call so you can page the per son whose
extension is in the Target list box. A list of all parked calls
appears in the Parked Calls dialog box when you click View
Parked Calls on the Caller menu. You can retrieve the call
from the View Parked Calls dialog box by pressing the
Retrieve button. For more information on viewing parked
calls, refer to Parking, holding and screening calls on page
51. The Park/Page button performs the same function.
Join Caller connects two callers by joining the active call with the call
that is on hold. Refer to Linking and Joining calls on page
56.
View Parked Calls opens the Parked Calls dialog box, which displays calls
parked by all attendants. A call can be retrieved by any
attendant or from any telephone on the Enterprise Edge
server. For more information, refer to Parking, holding and
screening calls on page 51.