CP-PWR-CUBE-3 – Power Cube 3 – IP Phone Local Power

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CP-PWR-CUBE-3 Description

The CP-PWR-CUBE-3 is a Cisco Power Cube 3 local AC-to-DC power adapter for Cisco phones on desks and in rooms without PoE. The adapter powers the Cisco Unified IP Conference Phone 8831 and the Cisco Unified IP Phone 6900 Series, and it connects to the wall through a separate Cisco AC country cord. A Cisco Unified IP Conference Phone 8831 daisy-chain configuration requires a power cube.

Quick Specs

Parameter

Specification

Product ID

CP-PWR-CUBE-3

Product type

Local AC-to-DC phone power adapter

Cisco product name

Cisco Power Cube 3

Power role

Local desktop power for non-PoE Cisco phone deployments

Documented phone examples

Cisco Unified IP Conference Phone 8831 and Cisco Unified IP Phone 6900 Series

8831 daisy-chain rule

CP-PWR-CUBE-3= is required when Cisco Unified IP Conference Phone 8831 is used in a daisy-chain configuration

PoE relationship

Supported phones support IEEE 802.3af PoE in Cisco phone power planning

AC cord requirement

Use one of the corresponding Cisco AC country cords

Phone power context

48 VDC phone power requirement in Cisco 8831 documentation

Documented 8831 use

Cisco Unified IP Conference Phone 8831 optional local power supply

Documented 6900 series use

Local power adapter for Cisco Unified IP Phone 6900 Series phones

Power-cord examples

AP, AR, AU, CE, CN, JP, NA, SW, and UK country-cord options are documented by Cisco

Power cube 4 switch variant

CP-PWR-CUBE-4-S= Cisco Power Cube 4 with power switch

Application Scenarios

Conference Room Without PoE

In a meeting room where the access switch cannot supply 802.3af PoE, the adapter powers a Cisco Unified IP Conference Phone 8831 from a wall outlet through the matching country cord.

Daisy-Chained Conference Phones

When two Cisco Unified IP Conference Phone 8831 units are daisy-chained across a larger table, the adapter supplies the local power that configuration requires.

Product Comparison

Parameter

CP-PWR-CUBE-3

CP-PWR-CUBE-4

CP-PWR-CUBE-4-S

Compatible phones

Cisco Unified IP Conference Phone 8831 and Cisco Unified IP Phone 6900 Series

Cisco IP Phone 8800 Series

Cisco IP Phone 8800 Series

Conversion

AC-to-DC

AC-to-DC

AC-to-DC

Output voltage

Not published

48V DC

Not published

Output power

Not published

Not published

Not published

Power cord

Separate Cisco AC country cord

Separate Cisco AC country cord

Separate Cisco AC country cord

Power switch

Not published

Not published

Yes

CP-PWR-CUBE-3 is the local power adapter documented for the Cisco Unified IP Conference Phone 8831 and the Cisco Unified IP Phone 6900 Series, while CP-PWR-CUBE-4 is the AC-to-48V DC power cube listed as an optional supply for the Cisco IP Phone 8800 desk phones. The 8831 daisy-chain configuration requires a power cube and is documented with CP-PWR-CUBE-3, so those room designs stay on this model. CP-PWR-CUBE-4-S is the CP-PWR-CUBE-4 design with a power switch and shares its 8800 Series phone context, so 8800 desk phones that need a switched adapter use CP-PWR-CUBE-4-S.

Ordering Checklist

  • Cisco Unified IP Conference Phone 8831: CP-PWR-CUBE-3= powers the 8831 locally and is required for a daisy-chain configuration. A two-unit 8831 room design without the power cube cannot be daisy chained.
  • Cisco Unified IP Phone 6900 Series: CP-PWR-CUBE-3= is the local adapter for 6900 phones as an alternative to 802.3af PoE. A 6900 desk without PoE needs a local adapter.

Specifications

Parameter Specification Parameter Specification
Product ID CP-PWR-CUBE-3 Cisco ordering ID CP-PWR-CUBE-3=
Product type Local AC-to-DC phone power adapter Cisco product name Cisco Power Cube 3
Power role Local desktop power for non-PoE Cisco phone deployments Phone power context 48 VDC phone power requirement in Cisco 8831 documentation
Documented 8831 use Cisco Unified IP Conference Phone 8831 optional local power supply 8831 daisy-chain rule CP-PWR-CUBE-3= required for Cisco Unified IP Conference Phone 8831 daisy-chain configuration
Documented 6900 series use Local power adapter for Cisco Unified IP Phone 6900 Series phones AC cord requirement Corresponding Cisco AC country cord required
Power-cord examples AP, AR, AU, CE, CN, JP, NA, SW, and UK country-cord options are documented by Cisco Power cube 4 switch variant CP-PWR-CUBE-4-S= Cisco Power Cube 4 with power switch

Get More Information

Need pricing, stock, or shipping details for the CP-PWR-CUBE-3 ? Layer23-Switch can help you check current availability, lead time, and delivery options for this. Send us the part number, quantity, and destination country via live chat or email [email protected] for a fast quotation.

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Questions & Answers

  • What role does CP-PWR-CUBE-3 serve?

    The CP-PWR-CUBE-3 (Cisco Power Cube 3, Cisco ordering ID CP-PWR-CUBE-3=) is a local AC-to-DC power adapter designed for Cisco IP phone scenarios, suitable for deployments where endpoints are powered locally rather than relying on PoE from a switch.
  • When is CP-PWR-CUBE-3 required for an 8831 deployment?

    CP-PWR-CUBE-3 is required when two Cisco Unified IP Conference Phone 8831 units operate in a daisy-chain configuration. It can also provide local power for a standalone 8831 without PoE.
  • Which phones are documented with CP-PWR-CUBE-3?

    CP-PWR-CUBE-3 is documented with Cisco Unified IP Conference Phone 8831 and Cisco Unified IP Phone 6900 Series models. Compatibility must match the exact phone order.
  • How does CP-PWR-CUBE-3 differ from CP-PWR-CUBE-4?

    CP-PWR-CUBE-3 is documented for the Cisco 8831 and 6900 Series, while CP-PWR-CUBE-4 is documented for Cisco 8841 and 8861 phones. Both provide local power where switch PoE is not used.
  • Does CP-PWR-CUBE-3 include a country-specific AC cord?

    No, CP-PWR-CUBE-3 requires the corresponding Cisco AC country cord as a separate selection. The destination country determines which cord PID is appropriate.
  • What power role does CP-PWR-CUBE-3 serve?

    CP-PWR-CUBE-3 provides local AC-to-DC power for supported Cisco phones that are not using switch-provided PoE. Cisco names the adapter Power Cube 3.

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