CONTENTS.1. HOW TO FOLLOW THE INSTALLATION PROCEDURE ....................................... 12. PACKING MATERIALS AND EXPLODED VIEW .......................................... 22.1 PACKING MATERIALS (KEY SERVICE UNIT) ......................................... 22.2 PACKING MATERIALS (KEY TELEPHONE). .......................................... 32.3 EXPLODED VIEW (KEY SERVICE UNIT) ............................................ 42-4 EXPLDDED V!E\N (KEY TELEPl-lnNFl.._..- ............................................... 53. SYSTEM CONNECTION LAYOUT ...................................................... 64. SYSTEM CAPACITY AND SPECIFICATIONS .............................................. 75. MODELS AND SYSTEM CONFIGURATION ............................................... 66. INSTALLATION OF KEY SERVICE UNIT ................................................ 96.1 PAD ADJUSTMENT AND EXPLANATIONS ON FUSES ................................... 96.2 CLAMPING OF INSTALLATION WIRING CABLES, AND INsTALLATlON AND CONNECTIONOF BACKUP BATTERY UNIT (VA-208641 ............................................ IO6.3 HOWTOMOUNTTHEMAINUNITONTHEWALL.. .................................... 117. INSTALLATION OF KEY TELEPHONE .................................................. 127.1 VOLUME ADJUSTMENT ........................................................ 127.2 HOW TO MOUNT THE KEY TELEPHONE ON THE WALL ................................. 128. WIRING CONNECTION OF EQUIPMENTS ................................................ 148.1 CONNECTION OF KEY SERVICE UNIT AND KEY TELEPHONE ............................ 148.2 INSTALLATION AND CONNECTION OF EXTENSION EC UNIT, ............................ 188.3 INSTALLATION AND CONNECTION OF DOORPHONE ADAPTOR (VA-208601 .................. 208.4 CONNECTION OF EXTERNAL HOLD-ON MUSIC ........................................ 228.5 INSTALLATION OF EXTERNAL PAGING EQUIPMENT .................................. 23PROGRAMMING..................................................................... 241. EXPLANATION OF PROGRAMMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252. GENERAL OPERATIONAL PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263. PROGRAMMINGAPPENDIX APROGRAMMINGSETTINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29TABLE FOR INITIAL BET