er to combine a voice message with a fax or to simply identify the fax with a voice annotation. The following is a sample of an Annotated Fax call: Caller is answered by an automated message, calling from a fax-equipped telephone and hears: "Press 2 to send a message. " Caller presses 2. "Enter the mailbox number of the person to whom your message should be sent." Caller enters voice mailbox number of fax recipient. "This message will be sent to Michelle Barricello. Press to start recording." Caller presses 2 to start recording. Beep (Recording voice message). "Hi, Michelle. Here is the fax of last month's sales figures that we talked about." The Telecom Handbook 183 FAX SERVERS Caller presses 2 (Finished recording). Caller presses 0 for message routing options. "To append a fax message, press 4. Caller presses 4. "Press the start button on your fax machine now." " Caller presses the start button on the fax machine. Annotated fax mail permits users to add spoken information to the fax being sent. It may clarify the document or make it possible to send an older document with the changes or updates spoken, saving the time needed to generate a new document. Annotated fax mail also enables the system user to identify a particular fax document from the spoken message, rather than just knowing that there are waiting faxes. To leave the voice annotation at the same time as the fax is sent, the caller must be calling from a fax-equipped telephone An annotated fax mail system may be known as a Fax Message Center. Fax-on-Demand Another type of fax server application is known as fax text, fax retrieval or, more typically, Fax-on-Demand. Fax-on-Demand allows callers 24 hour a day access to a library of documents stored on the fax server. Callers use a menu structure to request the documents they want to have faxed to them. Any type of pre-generated document (price sheets, bro- chures, technical information, product instructions, etc.) may be made available to callers with this application. Any caller can access the documents