The disadvantages of Same Call Fax include the following: The caller must be calling from a fax-equipped telephone or PC. In addition, callers may not have direct access to the fax machine. It may be in another room or inaccessible (a hotel fax machine, for example). Since the call has to be placed from the fax machine that will receive the fax, delivery is limited to the same location that requests the documents. You cannot request a document to be sent to another location (such as to your office if you are out of town) or to another person. For the Same Call Fax application to work, a fax port must be available during the call made to request the fax. If no fax The Telecom Handbook CHAPTER 9 ports are available in the system, the system will not hold the caller until a port is free, SO the caller must try again later. With Call Back Fax, the caller requesting the documents re- ceives the fax on a second call, not during the original call. Multiple documents can be requested on the same call. The scenario for Call Back Fax is as follows: Caller picks up any telephone and dials the access number. "Good afternoon. Thank you for calling Plantco in Redding, California. Visit our wholesale nursery or call us for landscaping. If you know the extension of the party you are calling, you may dial it now. For access to our Fax Library, press 7." Caller presses 7. "If you are a first time user of our Fax Library, press 1 to have an index of available documents faxed to you. If you know the document number you wish to receive, you may enter it now." Caller presses 3021, the index number of the document he wishes to receive. "Please enter the telephone number of your fax ma- chine, followed by a pound sign. Caller enters the telephone number of the fax machine to which he wishes to have the fax sent, followed by a pound sign (#). "The number you entered was If this is correct, press 1. Otherwise, press 9. " " Caller presses 1. "To identify your fax, enter your extension or tele- phone number, followed by a pound sign." The T