ing technical documents over the telephone Reduced Mailing or Express Service Charges: Money spent on sending out price sheets, etc. Money spent on sending out brochures or fact sheets Money spent on sending out sales promotional literature Money spent on sending out technical documents Simplified Document Administration: Price lists Technical information Business forms 200 2: The Telecom Handbook CHAPTER 9 Configuring Fax-on-Demand The configuration of Fax-on-Demand can be broken into three areas: Hard Drive Requirements Fax-on-Demand Hardware Requirements Telephone System Requirements Each of these areas has its own set of configuration re- quirements. Hard Drive Requirements Hard drive space is needed to hold the documents of the Fax- on-Demand Library. This additional space must be taken into account when the basic system is sized. By following the basic formula of 1 Hour = 120 pages of Fax-on-Demand (an industry average) you can determine the additional hard drive capacity required to support the application. These applications always have a tendency to grow as new uses for the module are uncov- ered. Be sure to allow some extra hard drive capacity for growth. Hardware Requirements The Fax-on-Demand application uses fax boards for the fax server. Each fax card requires a slot. Telephone System Requirements Each fax port on the fax server system needs either a separate central office line or a separate analog port from the telephone system. The choice between outside line and analog station port is controlled by the application: Applications using the Same Call Fax method must have dedi- cated analog telephone ports for each fax port. Many The Telecom Handbook 69 201 FAX SERVERS Fax-on-Demand systems now use a combination of DID (di- rect inward dial) for incoming and combination trunks for outgoing calls. Applications using Call Back Fax may use either a dedicated analog telephone port or a dedicated outside line for every fax port. The outside lines can come directly into the fax server from the telecomunic