ATT DEFINITY Communications System Generic 3 For Single-Carrier Cabinets Instructions Manual

9-2 6Issue 1  September 1995  
Installation
Install q ueue warning indicator as follows:
1. Determine port assignment for queue warning indicator from Hunt 
Group Form:
2. Install patch cord /jumper wires at cross-c onnect field.
3. Mount indicator at specified location.
4. Connect a 2-pair line cord  (mo dular plug at one end) from the 
information outlet to the indicator. See Figure 9-3.
5. Connect red (R) and green (T) leads to the indicator.
6. Administer per 
DEFINITY Communications System Generic 3...

Install the 1145B1 Power Sup p ly
Issue 1  September 1995 
9-2 7
32. The 1145B1 (not 1145A1) is required for installation outside the United 
States.
Auxiliary power (local or bulk) is always required in the following situations:
nAttendant console 302B.
nAny 8520 terminal.
nAny 7500-series or 8500-series terminal with an asynchronous data 
module.
nAny 7500-series terminal (whether in p assive b us, or p oint to point, that is, 
one per basic rate interface port).
nAny 8510 terminal in p assive b us or...

9-2 8Issue 1  September 1995  
Figure 9-12. 1145B1/1146B1 Mounting Arrangement
2
9
1-8
1-32
3
5
87
Output Power On Charging Battery On Battery Reserve1145A1 Power Unit4
61 1
10
1. Wall mounting plate
2. 2.5 Amp Hour Battery
3. Battery bracket
4. AC power cord
5. 1146B power distribution unit
6. Unswitched outlet 120 VAC, 20 Amp or 
230 VAC, 15 Amp )7. 11 45 B P owe r S u p p ly
8. Power cable
9. Battery backup switch settings
10 . In set
nWall must be at least 3/4” (1.9 cm) wood
Figure Notes: 

Install the 1145B1 Power Sup p ly
Issue 1  September 1995 
9-2 9
Mount the 1145B1 Power Supply
The 1145B1 Power Supply unit is snap-fitted onto the bottom wall mounting p late 
without tools.
1. Perform this ste p using a place, rotate, then snap motion. The holes 
used for 1145B1 Power Supply mounting are indicated on the wall-
mounting plate. The preceding illustration shows a side view of the 
mounting arrangement.
To dismount the unit, push the bottom of the power unit toward the 
mounting p late...

9-3 0Issue 1  September 1995  
2. An installer-provided insulated ground wire, 16 AWG or greater, is 
required to c onnect the Power Supply frame ground lug to an approved 
ground. The Power Supply frame ground sc rew is located next to the 
AC receptacle to the left of the unit. The ground screw and the AC 
receptacle are shown in the preceding illustration.
3. Mark the Unit Number and Connectivity information on the front label 
next to the light emitting diodes.
Mount the 1146B1 Power Distribution...

Install the 1145B1 Power Sup p ly
Issue 1  September 1995 
9-3 1
Power Up and Test
Powering up and testing should be performed only after all the hardware is 
properly mounte d. The following table describes the meaning of the Power 
Supply light emitting diodes when lit.
1. Connect the AC power cord to Power Supp ly and route the cord  to an 
appropriate AC outlet using the clips provided on the unit.
NOTE:
A maximum of four Power Su p plies can be powered from one 
dedicated 110VAC, 20A feeder. Use...

9-3 2Issue 1  September 1995  
Wire the 1146B1 Power Distribution Unit
It may be better to wire endpoints to the 1146B1 while p ower from the 1145B1 is 
on. This way, a red light emitting diod e (LED) on the distribution unit lights if you 
connect its associated circuit to shorted building wiring or to a shorted terminal.
1. Install cross-connect jumpers to wire from the Distribution Unit (the label 
shows polarity) to Pins 7 and 8 of the appropriate information outlet. 
Route the wires through the clip...

Install the 1145B1 Power Sup p ly
Issue 1  September 1995 
9-3 3
Reset Light Emitting Diodes (LED) on Power 
Distribution Unit
A lit red light emitting  diod e (LED) next to any of the 32 p ower output connectors 
on the Power Distribution Unit indicates a short circuit in the building wiring or 
the terminal equipment. To reset the light emitting diode (LED), p erform the 
following:
1. Disconnect the terminal equipment from the wall jack.
2. If the light emitting diode (LED) g oes off, the terminal e...

9-3 4Issue 1  September 1995  
nNever push objects of any kind through the power supply or distribution 
unit slots as they may touch dangerous voltage points or short out parts 
that could result in a risk of fire or electrical shock.
nTo reduce risk of electric shock, do not disassemble these products. 
Return them for repair when needed. Opening or removing covers may 
expose you to dangerous voltages or other risks. Incorrect reassembly 
can cause electric shock when the products are subsequently...

Install the MSP-1 Power Sup p ly
Issue 1  September 1995 
9-3 5
Important Safety Instructions
The most careful attention has been devoted to safety standards in the 
manufacture of this power sup ply. Safety is a major factor in the design of every 
power supply. But, safety is 
your responsibility too.
Please read carefully the helpful tips listed  below and on the next p a ge. These 
suggestions will enable you to take full advantage of this product. Then, retain 
these tips for later use.
!CAUTION:...