Handbook | 279 Press the Space One Touch key until the display changestoYES <ß > NO < ©>.10 Press the Yes ß key.11 Press the Select Function key to finish. Keep in mindthat all of the outside telephone numbers you programinto your MFP have to begin with your PBX’s accessdigit.! Most PBX systems are digital, however an analog linefrom your PBX is required to support fax operations.! To turn off the PBX LINE and DIAL PREFIX functions,follow Steps 1-7 above. At Step 8, press the Space keyfour times to remove the access digits.