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Installing and wiring telephone power supplies
132 Installing and Connecting the MDF and Telephones
Important safety instructions for 1151B1 and
1151B2 Power Supplies
Please read the following helpful tips. Retain these tips for later use.
When using this power supply, the following safety precautions should always be followed to
reduce the risk of fire, electric shock, and injury to persons.
● Read and understand all instructions.
● Follow all warnings and instructions marked on this power supply.
● This product can be hazardous if immersed in water. To avoid the possibility of electrical
shock, do not use it near water.
● To reduce the risk of electric shock, do not disassemble this product except to replace the
battery.
● This product should be operated only from the type of AC power source indicated on the
label. If you are not sure of the type of AC power being provided, contact a qualified
service person.
● Do not allow anything to rest on the power cord. Do not locate this product where the cord
will be abused by persons walking on it.
● Do not overload wall outlets and extension cords as this can result in the risk of line or
electric shock.
● Disconnect the cords on this product and refer servicing to qualified service personnel
under the following conditions:
● When the power supply cord or plug is damaged or frayed.
● If liquid has been spilled into the product.
● If the product has been exposed to rain or water.
● If the product was dropped or the housing has been damaged.
● If the product exhibits a distinct change in performance.
● If the product does not operate normally by following the operating instructions.
Using 1151B1 and 1151B2 Power Supplies
The 1151B1 and 1151B2 Power Supplies can be used to supply local power to ISDN-T 85xx
and 84xx series and 46xx series telephones connected to a media gateway and to the 302D
Attendant Console that requires auxiliary power for its display. The unit can supply power to
adjunct equipment such as S201A and CS201A speakerphones or a 500A Headset Adapter
attached to any currently manufactured analog, DCP, or ISDN-T telephone equipped with an
adjunct jack.