Cisco 8800 - Connect a Key Expansion Module to a Cisco IP Phone

Table 2: Power-Supply Compatibility Table
Cisco IP Phone Power Cube 4802.3at PoE802.3af Power over Ethernet
(PoE)
Configuration
YesYesYes8851 with 1 expansion module
YesNo
See the third note above
No8851with 2 expansion modules
YesYesNo8861 with 1 expansion module
YesYes
See the first note above
No8861 with 2 expansion modules
YesYes
See the first note above
No8861 with 3 expansion modules
YesYesNo8865 with 1 expansion module
YesYes
See the second note above
No8865 with 2 expansion modules
YesYes
See the second note above
No8865 with 3 expansion modules
Note
•
The fast-charging feature on the back USB does not work when more than one expansion module
is attached to a Cisco IP Phone 8861 using 802.3at PoE.
• The fast-charging feature on the back USB doesn’t work when more than one expansion module is
attached to a Cisco IP Phone 8861 unless Cisco Universal PoE (UPoE) is used.
•
Cisco IP Phone 8851 with 2 expansion modules will work on 802.3at PoE only with v08 or later
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.
Connect a Key Expansion Module to a Cisco IP Phone
If you want to install more than one expansion module, you repeat steps 7-9 to connect the other expansion
modules together.
Cisco IP Phone 8800 Series Administration Guide for Cisco Unified Communications Manager
3
Cisco IP Phone Key Expansion Module
Connect a Key Expansion Module to a Cisco IP Phone