Safety NoticesPlease observe the safety notices in this manual in order to avoid danger to users or other people, and preventdamage to property.The notices are classified as follows, according to the severity of injury or damage:WARNINGThis notice means that misuse could result in deathor serious injury.CAUTIONThis notice means that misuse could result in injuryor damage to property.WARNINGUnplug the PBX from the AC outlet if it emits smoke, an abnormal smell or makes unusual noise.These conditions can cause fire or electric shock. Confirm that smoke has stopped and contact anauthorised Panasonic Factory Service Centre.NOTES• The contents of this manual apply to PBXs with a certain software version, as indicated on the cover ofthis manual. To confirm the software version of your PBX, see [190] Main Processing (MPR) SoftwareVersion Reference.• Some optional hardware, software, and features are not available in some countries/areas, or for somePBX models. Please consult your certified Panasonic dealer for more information.• Product specifications are subject to change without notice.• Throughout this manual, PT displays and other displays are shown in English. Other languages may beavailable, depending on the country or area.• In this manual, the suffix of each model number (e.g., KX-NS500NE) is omitted unless necessary.PT Programming Manual 3Introduction