Key Expansion Module Power Information - Cisco 8800 Series Manual

Key Expansion Module Power Information

You can use more than one expansion module per phone. But each module must be the same type. You cannot
mix Cisco IP Phone 8800 Key Expansion Module with a Cisco IP Phone 8851/8861 Key Expansion Module
or with a Cisco IP Phone 8865 Key Expansion Module. You cannot mix audio expansion modules with video
expansion modules. You also cannot use a video expansion module on an audio phone or an audio expansion
module on a video phone.
The following table lists the phones and the number of key expansion modules that each model supports.
Table 96: Cisco IP Phones and Supported Cisco IP Phone 8800 Key Expansion Module
Cisco IP Phone Model
Cisco IP Phone 8851
Cisco IP Phone 8861
Cisco IP Phone 8865
Table 97: Cisco IP Phones and Supported Cisco IP Phone 8851/8861 Key Expansion Module and Cisco IP Phone 8865 Key Expansion Module
Cisco IP Phone Model
Cisco IP Phone 8851
Cisco IP Phone 8861
Cisco IP Phone 8865
Key Expansion Module Power Information
If you use a key expansion module with your IP phone, then Power over Ethernet (PoE) is enough to power
your expansion modules. But, your phone must have an IP address in order to charge the expansion module.
A power cube is needed for smartphone or tablet charging when your key 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 98: Power-Supply Compatibility for Cisco IP Phone 8800 Key Expansion Module
Configuration
8851 with 1 key expansion
module
Cisco IP Phone 8800 Series Multiplatform Phone Administration Guide for Release 11.3(1) and Later
476
802.3af Power over Ethernet
(PoE)
Yes
Supported Number of Key Expansion Modules and Buttons
2; single LCD screen, 18 line keys, two pages, providing 72
buttons
3; single LCD screen, 18 line keys, two pages, providing 108
buttons
3; single LCD screen, 18 line keys, two pages, providing 108
buttons,
Supported Numbers of Key Expansion Modules and Buttons
2; dual LCD screen, 14 line keys, two pages, providing 56 buttons
3; dual LCD screen, 14 line keys, two pages, providing 84 buttons
3; dual LCD screen, 14 line keys, two pages, providing 84 buttons
802.3at PoE
Yes
Cisco IP Phone Accessories
Cisco IP Phone Power Cube 4
Yes