AT&T Definity ISDN 7507 - Manual (Page 13)

Send All Calls Temporarily sends all your calls to the extension of a person
designated to answer them when you cannot (perhaps a secretary or receptionist). Use
when you will be away from your desk for awhile, or when you do not wish to be
interrupted by telephone calls.
Speakerphone Allows you to place calls or access other features without lifting the
handset. Use any time you prefer hands-free communication, or for group listening.
SPOKESMAN® Loudspeaker Allows you to monitor call progress (hear touch-tone
digits as they are dialed, ringing, and the called party answer) and listen (only) to a
conversation. Use for group listening.
Transfer Transfers a call from your voice terminal to another extension or outside
number. Use when your caller needs to speak further with someone else. Note: Calls
from an outside number to your voice terminal can be transferred only to an extension,
not to another outside number.
Voice Message Retrieval Gives you messages (via computerized voice) left for you
through Leave Word Calling or as entered by a covering user. If authorized by your
System Manager, you may also retrieve messages for one or more of your co-workers.
Use to hear all messages received while you were away.