Key Expansion Module Power Information; Cisco Ip Phone 8800 Series Multiplatform Phones Administration Guide - Cisco 8851 Administration Manual

Cisco IP Phone Model
Cisco IP Phone 8861

Key Expansion Module Power Information

If you use a key expansion module with your phone then Power over Ethernet (PoE) is enough to power your
expansion modules. But a power cube is needed for smartphone or tablet charging when your expansion
module is attached.
A key expansion module uses 48V DC, 5W per module. If you are charging a smartphone or a tablet, note
the following:
• Side USB: Up to 500mA/2.5W charging
• Back USB: Fast charging, Supports up to 2.1A/10.5W charging
Table 15: Power-Supply Compatibility Table
Configuration
8851 with 1 expansion module
8851with 2 expansion modules
8861 with 1 expansion module
8861 with 2 expansion modules
8861 with 3 expansion modules
Note • The fast-charging feature on the back USB does not work when more than one expansion module
• The fast-charging feature on the back USB doesn't work when more than one expansion module is
• Cisco IP Phone 8851 with 2 expansion modules will work on 802.3at PoE only with v08 or later
Supported Key Expansion Modules
3; providing 108 lines or buttons
802.3af Power over Ethernet
(PoE)
Yes
No
No
No
No
is attached to a Cisco IP Phone 8861 using 802.3at PoE.
attached to a Cisco IP Phone 8861 unless Cisco Universal PoE (UPoE) is used.
hardware. You can find the phone version information on the lower back of the phone as part of the
TAN and PID label. Version information is also located on the individual phone packaging.
802.3at PoE
Yes
No
See the third note above
Yes
Yes
See the first note above
Yes
See the first note above

Cisco IP Phone 8800 Series Multiplatform Phones Administration Guide

Key Expansion Module Power Information
Cisco IP Phone Power Cube 4
Yes
Yes
Yes
Yes
Yes
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