60 Handbook|Paper Size SettingsFirst Paper Size: User Function 13This function allows you to specify the size of paper you areusing in the paper tray. Available settings are letter (default),A4, legal 13, legal 14, and OTHER.Using the OTHER setting, with MFP Option InstalledThe MFP Option must be installed to work with the OTHERsetting.When using the fax machine as a PC printer, you can load A5and B5 size paper into the paper tray. However, reports andstandard size faxes (letter, legal, or A4) will not printcompletely on these paper sizes. Select the OTHER settingwhen you have these or other smaller sizes loaded; thisprevents faxes and reports from printing partially. WhenOTHER is selected, faxes are stored in the fax machine andonly print when you have loaded a standard paper size andchanged the 1’ST PAPER SIZE setting to match the paperloaded.! Important: If you use the OTHER setting, be sure toreset your fax machine to a standard paper size as soonas you are finished. Otherwise, you cannot receivefaxes.Keep in mind that when you select OTHER, poweroutage reports do not print—this is the only notificationthat power to the fax machine has been disrupted.Second Paper Size: User Function 14This function allows you to specify the size of the paper youare using in the optional second paper tray, and only appearsif that option is installed. Refer to User Function Setting 13for details.Connecting to a PBXA PBX (Private Branch Exchange) is a private telephonesystem used to route internal calls. If you have to dial a prefix(access digit) to get an outside line, then your line isconnected to a PBX.If you are connecting your fax machine to a PBX, follow theinstructions below. It can then detect the access digit at the