DC Power on IP phones/ATA

Unanswered Question
Mar 7th, 2009
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Hi netprotians,


Can I ask if anyone has tried connected IP phones or ATA to a DC power supply.

From the Phone data sheet (E.g 7945 link below), it mentions that the power cube is a AC power supply and not able to connect to DC. But would anyone know if Cisco provides anything for DC? I know we can probably do a OEM power adaptor, but i'm afraid Cisco will not support if it does fail.


Please kindly advise.

Appreciate any comments or help.

Thanks,

Eugene


Link:

http://www.cisco.com/en/US/prod/collateral/voicesw/ps6788/phones/ps379/ps8534/product_data_sheet0900aecd8069bb80.html


Supports IEEE 802.3af PoE (Class 3). 48VDC is required; it can be supplied locally at the desktop using an optional AC-to-DC power supply (part number CP-PWR-CUBE-3=) or power injector (CP-PWR-INJ=). Local power options require a corresponding AC country cord (see Table 6).

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