Contents

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

97

telephone installation examples

Installing the 808A Emergency Transfer Panel

99

Installing telephones used only for

104

emergency transfer (trunk/auxiliary field)

Installing telephones used for emergency

105

transfer and as normal extension (trunk/auxiliary field)

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

Issue 3 January 2008 5

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Avaya 03-300686 manual Installing and wiring telephone power supplies 109