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Installation and wiring of telephones and power supplies
Issue 9.1 June 2006 365
Figure 27: Example Adjunct Power Connections
Auxiliary power for an attendant console
The nonessential functions of an attendant console and its optional 26A1 or 24A1 selector
console derive power from an auxiliary power source. Provide auxiliary power for an attendant
console through this cable so the console remains fully operational during short power outages.
Note:
Note: Only 1 console can derive auxiliary power from the system and through the
auxiliary cable located in the trunk/auxiliary field.
A console’s maximum distance from its auxiliary power source is:
● 800 feet (244 m) for a 302A1
● 350 feet (107 m) for a 301B1 and 302D
An attendant console can also derive auxiliary power from:
● Individual 1151B/C or 1151B2/C2 power supply
● MSP-1 power supply
● 258A-type adapters
● Bulk power supplies
Figure notes:
1. Typical display telephone
2. Individual power supply (Such as 1151B/
C) (Not used if item 14 is used)
3. 400B2 adapter
4. Information outlet (modular jack)
5. 4-pair D-Inside Wire (DIW) cable
6. Satellite site or adapter location
7. 25-pair D-Inside Wire (DIW) cable
8. Station side of MDF
9. 100P6A patch cord or jumpers
10. System side of MDF
11. 25-pair cable to digital line
modular jack
12. Equipment room
13. Satellite location
14. Bulk power supply. Install at
satellite location or equipment
room (not both).
cydmapwr EWS 052898
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