Chapter 4 Setting Up The Cisco Unified Ip Color Key Expansion Module; Installing A Key Expansion Module On The Cisco Unified Ip Phone; Power Information - Cisco 8961 Administration Manual

Installing a Key Expansion Module on the Cisco Unified IP Phone

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Installing a Key Expansion Module on the Cisco Unified IP
Phone
This section contains the following topics:
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Power Information

The Cisco Unified IP Color Key Expansion Module for the Cisco Unified IP Phone 8961, 9951, and
9971 possess the following power consumption and power scheme.
Power Consumption
48V DC, 5W per KEM
Power Scheme
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Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 8.6 (SIP)
4-2
Removing a Key Expansion Module, page 4-7
Troubleshooting, page 4-7
Power Information, page 4-2
Connecting a Single KEM to the Cisco Unified IP Phone, page 4-3
Connecting Two or More KEMs to the Phone Using the KEM Spine Connector, page 4-4
At least one KEM can be powered up if the Cisco Unified IP Phone 8961, 9951, and 9971 uses AT
PoE.
If the phone uses a power adapter, three KEMs can be powered up for the Cisco Unified
IP Phone 9971, two KEMs can be powered up for the Cisco Unified IP Phone 9951, and one KEM
can be powered up for the Cisco Unified IP Phone 8961.
A KEM cannot be powered up if the Cisco Unified IP Phone 8961, 9951, and 9971 uses AF PoE.
With AT power, the Cisco Unified IP Phones 9951 and 9971 can support two KEMs plus a USB
headset or another USB device that is independently powered and only uses USB for signaling.
The Cisco Unified IP Phone 9971 needs a power cube to support three KEMS.
With AF power, the Cisco Unified IP Phones 9951 and 9971 need power cubes for any KEMS. The
Cisco Unified IP Phone 8961 can support one KEM with CDP, AF power, and no power cube.
Chapter 4 Setting Up the Cisco Unified IP Color Key Expansion Module