Table of Contents1 Safety Precautions ................................................................................. 71.1 For Your Safety ................................................................................................................ 81.2 Important Safety Instructions ...................................................................................... 151.3 Precautions .................................................................................................................... 161.4 Data Security ................................................................................................................. 191.5 F.C.C. REQUIREMENTS AND RELEVANT INFORMATION ......................................... 192 System Outline ..................................................................................... 232.1 Basic System Construction .......................................................................................... 242.1.1 System Configurations ................................................................................................. 242.1.2 System Connection Diagram ........................................................................................ 252.1.3 Block Diagram .............................................................................................................. 262.1.4 Typical Network Setting Example ................................................................................. 272.2 Optional Equipment ...................................................................................................... 312.2.1 Optional Equipment ...................................................................................................... 312.3 Specifications ................................................................................................................ 322.3.1 General Description ...................................................................................................... 322.3.2 Characteristics .............................................................................................................. 332.3.3 System Capacity ........................................................................................................... 333 Installation ............................................................................................. 373.1 Before Installation ......................................................................................................... 383.1.1 Before Installation ......................................................................................................... 383.2 Installation of the PBX .................................................................................................. 403.2.1 Unpacking ..................................................................................................................... 403.2.2 Names and Locations ................................................................................................... 403.2.3 Opening/Closing the front cover ................................................................................... 413.2.3.1 Removing/Attaching the Cable Cover ........................................................................ 443.2.4 Frame Earth Connection .............................................................................................. 443.2.5 Installing/Removing the Optional Service Cards .......................................................... 453.2.5.1 Slot covers ................................................................................................................. 493.2.6 Securing the Cables ..................................................................................................... 503.2.7 Placing the PBX on a Desktop ..................................................................................... 523.2.8 Wall Mounting ............................................................................................................... 533.2.9 Surge Protector Installation .......................................................................................... 563.2.10 Backup Battery Connection .......................................................................................... 583.3 The Mother Board and Option Cards .......................................................................... 603.3.1 Mother Board ................................................................................................................ 603.3.2 LCOT4 Card (KX-HT82480) ......................................................................................... 633.3.3 SLC8 Card (KX-HT82470) ............................................................................................ 633.3.4 DPH2 Card (KX-HT82460) ........................................................................................... 643.4 Connecting Outside Trunks ......................................................................................... 653.4.1 Connecting SIP Trunks ................................................................................................. 653.4.2 Connecting Analogue Trunks ....................................................................................... 673.5 Connecting Extensions ................................................................................................ 683.5.1 Connecting SIP Extensions .......................................................................................... 683.5.2 LAN Connections for IP Telephones ............................................................................. 703.5.3 Connecting Analogue Extensions Maximum Cabling Distances of the Extension Wiring(Twisted Cable) ............................................................................................................. 723.6 Connecting Doorphones and Door Openers .............................................................. 733.7 Connection of Peripherals ............................................................................................ 773.7.1 USB Interface for USB Memory Device ........................................................................ 77Table of Contents5