60-Key Expansion Console, B.3, I.8, I.9 60-Key Second Expansion Console, B.3, I.8, I.9 Analog ports, I.7 Battery. See Cautions Cabinets Expansion, F.2 Cautions, E.1 Battery, E.1 Fuse, E.1 Power supply, E.1 CO lines Capacities. See System capacities Connecting, I.5 Console, B.3, I.8, I.9 ESI Cordless Handsets. See Phones ESI Presence Management, D.1 Expansion Cabinet, F.2 Expansion Console, B.3, I.8, I.9 Fuse. See Cautions Grounding, F.2, I.1, I.3 Hardware installation, E.2–F.15 LED functions, F.15, G.6, H.6 Main board, A.2 Memory Module, A.3 Installation or replacement, F.5–F.8, G.5, H.5 Mirrored Memory Module (M3), A.3 Installation, F.9–F.13 MOH, I.3 NSP (Network Services Processor), A.7 Overlays, B.4 Paging, I.4 Phones Digital Feature Phones, B.1 ESI Cordless Handsets, B.2, B.3 IP Phones, B.2 VIP Softphone, B.4 Port cards Capacities, A.4 Charts, I.13–I.20 Installation, G.3–G.4, G.3–G.4 Installation, F.2 Port card adapter, F.3 Power, I.1 Power Distribution Shelf, A.3 Power supply. See Cautions Transformers, wall-mount, A.3 PRI, I.5 Regulatory information (U.S. and Canada), E.2 Ringer equivalence number (REN), E.2 Serial ports, I.3 Site location, F.1 SMDR, I.3 System capacities, D.1 T1, I.5 UPS (uninterruptible power supply), I.1 VIP Softphone. See Phones