Xerox 785 - Manual (Page 163)

Polling
WorkCentre Pro 665/685/765/785 7-1
7 Polling
Polling Communications
The Polling function key allows you to poll a remote machine (Poll), set
up a document to be polled by a remote machine (Be Polled), or poll
multiple remote machines during the same operation (Group or
Continuous Poll).
The Polling feature allows you to retrieve a document from a remote
machine when you call that machine.
You can also transmit a document to a remote machine when the
remote machine calls you.