Auxiliary power supplies
555-233-116
30 Issue 4 October 2002
Local auxiliary power supply
Consoles can use either local or phantom power, depending on the dista nce
between the console and the cabinet. Over short dista nces, phantom power is
attractive because no additional hardware is neces sarypower is supplied using
the telephone circuit itself. For longer distan ces, you need a local power supply.
Table 5 shows cabling distances for the 302 attendant console.
Applications that require auxiliary power
Auxiliary power (local or bulk) is always required for the following:
Any 8520 telephone
302-series attendant console
PassageWay adapter interface
Any 7500-series telephone whether in passive bus , or point to point (one
per BRI port)
Any 7500- or 8500-series telephone with an asynchr onous data module
Any 8510 telephone in passive bus or with an asynch ronous data module
(unless the 8510 will not be used to support data or v ideo)
Any 7400-series telephone with XM24 expansion m odule
Any 7400-series telephone with adjuncts 7407, 7434 o r 7444
Any 8400-series telephone with adjuncts 8411 or 8434
Any 4600-series IP telephone
IP console
The 1145B power supply is required for all installations outside the United States.
Table 5. 302C1 Attendant Console Cabling Distances
24 AWG Wire
(0.27 mm2)
27 AWG Wire
(0.14 mm2)
feet meters feet meters
With selector console:
Phantom-powered 800 244 500 152
Locally powered 5000 1524 3400 1037
Without selector console:
Phantom powered 1400 427 900 274
Locally powered 5000 1524 3400 1037