On fax machines, just as with telephones, there are often buttons that can be programmed for quick dialing of often-used numbers. With a fax application, this usually is not necessary as the program will likely have a built-in address book. Fax machines with this feature will store incoming faxes in memory if the machine should run out of paper. Once the paper is refilled, the machine will continue printing the fax. You can add additional memory cards if you find your machine often running out of memory or if you anticipate needing the above two features for larger documents.
Some models can hold a fax in memory until a certain programmed time.
This can allow you to send faxes at night when telephone rates drop, or for sending overseas. A separate handset for voice communication can be helpful, especially if you dial a voice line instead of a fax line. You can then pick up the handset and avoid having the receiver hear the annoying high-pitched squeal of the fax. Allows the machine to send a fax to multiple machines at once - convenient if you often send out a newsletter to several different offices. By allowing the machine to scan a document into its memory before sending the fax, you can reduce the amount of time you have to wait to retrieve your document from the machine.