Selecting the Line Type
If you connect the product to a PBX (Private Branch Exchange) phone system or terminal adapter, you must change the product's line type. PBX is used in office environments where an external access code such as “9” must be dialed to call an outside line. The default Line Type setting is PSTN (Public Switched Telephone Network), which is a standard phone line, similar to the one in your home.
Note: This setting can be locked by an administrator. If you cannot access or change this setting, contact your administrator for assistance.
1.Press the 
home button, if necessary.
2.Press the up or down arrow button, select Setup, and press the OK button.
3.Select Fax Settings and press the OK button.
4.Select Basic Settings and press the OK button.
5.Select Line Type and press the OK button. You see this screen:
6. If you connected the product to a PBX phone system, select PBX.
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