You are able to transfer calls even if all your current call appearance buttons are in use.
Calls and Button Status Indication:
The status indication for a call on hold pending transfer differs from that used for standard held calls:
Both the green and red lamps fast flash (flutter) when the button represents a call on hold pending transfer.
The call status information shown when a call on hold pending transfer is highlight is prefixed with On-Hold-Xfer rather than On-Hold.
Switching Between Calls:
Switching from a connected call to an existing call on hold pending transfer puts the connected call on hold pending transfer.
On J159 telephones, in addition to the Transfer soft key, transfer functions can be accessed using the key.
Alternatively, press Dir to select a destination from the directory or use the Redial option, if applicable.
Transferring a call while it is still ringing is called an unsupervised transfer.
Transferring a call after ringing finishes is called a supervised transfer.