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Issue 3 January 2008 5
Dual wiring of 2-wire and 4-wire endpoints . . . . . . . . . . . . . . . . . . . 87
Installing the attendant console . . . . . . . . . . . . . . . . . . . . . . . . . 87
Installing the 26B1 Selector Console . . . . . . . . . . . . . . . . . . . . . . 88
Connecting external alarm indicators and auxiliary power . . . . . . . . . . . . 88
Installing off-premises station wiring . . . . . . . . . . . . . . . . . . . . . . . . 90
Off-premises or out-of-building stations . . . . . . . . . . . . . . . . . . . . . . 91
Off-premises connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Off-premises protection requirements . . . . . . . . . . . . . . . . . . . . . 93
Telephone restrictions for exposed environments . . . . . . . . . . . . . . . 94
Digital Out-of-Building Telephone Protection . . . . . . . . . . . . . . . . . . 94
Installing the ITW Linx Enhanced Protector . . . . . . . . . . . . . . . . . 95
Installing the 4C3S-75 Enhanced Protector . . . . . . . . . . . . . . . . . 95
Installing the data link protector . . . . . . . . . . . . . . . . . . . . . . . 95
Emergency transfer units and associated telephones . . . . . . . . . . . . . . . 96
808A Emergency Transfer Panel and
telephone installation examples . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Installing the 808A Emergency Transfer Panel . . . . . . . . . . . . . . . . . 99
Installing telephones used only for
emergency transfer (trunk/auxiliary field) . . . . . . . . . . . . . . . . . . . 104
Installing telephones used for emergency
transfer and as normal extension (trunk/auxiliary field) . . . . . . . . . . . 105
Installing external ringing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Installing the queue warning indicator . . . . . . . . . . . . . . . . . . . . . . . 107
Chapter 7: Installing and wiring telephone power supplies . . . . . . . 109
1145B2 power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Important warning for 1145B2 power supply . . . . . . . . . . . . . . . . . . 110
Mounting the 1145B2/1146B2 power supply . . . . . . . . . . . . . . . . . . 111
Installing the wall-mounting plates . . . . . . . . . . . . . . . . . . . . . . . 114
Mounting the 1146B2 Power Distribution Unit . . . . . . . . . . . . . . . . . 114
Installing the battery mounting/wiring . . . . . . . . . . . . . . . . . . . . . . 115
Installing the expanded power distribution unit . . . . . . . . . . . . . . . . 115
Powering up and testing the power supply . . . . . . . . . . . . . . . . . . . 116
Wiring the 1146B2 Power Distribution Unit . . . . . . . . . . . . . . . . . . . 117
Resetting LEDs on power distribution unit . . . . . . . . . . . . . . . . . . . 118
1152A1 Mid-Span Power Distribution Unit . . . . . . . . . . . . . . . . . . . . . . 119
Important safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Using the 1152A1 Power Distribution Unit . . . . . . . . . . . . . . . . . . . . 120
Connecting the 1152A1 Power Distribution Unit . . . . . . . . . . . . . . . . 120
Connecting the cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121