14D1232PanasonicExpansion Unit for KX-TD1232A maximum of two 8-Station Line Units (KX-TD170) or 16 SLTLine Circuit Units and/or one CO Line/E&M (TIE) Line/ISDNLine Unit (KX-TD180, KX-TD184, KX-TD280, KX-TD286) canbe installed to any expansion area. The PRI ISDN Line Unit (KX-TD290) can be installed with the KX-TD280 or KX-TD286, butnot with the KX-TD180 or KX-TD184. You must use the KX-TD170/174- when you install the KX-TD290. The former KX-TD170/174 does not work properly with the KX-TD290.Please see the back of the unit and check “ ” is marked.Area 3Area 2Area 1Unit ConnectorsRemove the frontcover plate(s).Max. 2 units8-Station Line Unit,KX-TD170or16 SLT Line CircuitUnit, KX-TD174• 4-CO Line Unit,KX-TD180• E&M (TIE) Line Unit,KX-TD184• 2-ISDN S0 Line Unit,KX-TD280• 6-ISDN S0 Line Unit,KX-TD2861-PRI ISDN Line Unit,KX-TD290This unit can beinstalled with the KX-TD280 or KX-TD286,or individually.The locations of the optional units are shown below.Precautions To protect the printed circuit boards (P-boards) from static electricity, donot touch parts on the P-boards in the main unit and on the optional units.ISDN unit (KX-TD280, KX-TD286, KX-TD290) installation;The ISDN unit should not be installed only to the Slave system.Note • When starting the system for the first time or performing System DataClear, the location application will use the actual installation settingsinstead of the system default settings.• System Programming is required for location identification.Refer to [109] “Expansion Card/Unit Type” in this manual.Default:KX-TD1232:Area 1= 4-CO Line Unit, Area 2, 3= 8-Station Line UnitOne of the following units2.4.1 Location of Optional Cards and UnitsMODEL NO.KX-TD170Example