Cisco Systems 8961 manual Power Information, Connecting a Single KEM to the Cisco Unified IP Phone

Chapter 4 Setting Up the Cisco Unified IP Color Key Expansion Module

Installing a Key Expansion Module on the Cisco Unified IP Phone

•Removing a Key Expansion Module, page 4-6

•Troubleshooting, page 4-6

Installing a Key Expansion Module on the Cisco Unified IP Phone

This section contains the following topics:

•Power Information, page 4-2

•Connecting a Single KEM to the Cisco Unified IP Phone, page 4-2

•Connecting Two or More KEMs to the Phone Using the KEM Spine Connector, page 4-3

Power Information

The Cisco Unified IP Color Key Expansion Module for the Cisco Unified IP Phone 8961, 9951, and 9971 have the following power consumption and power scheme.

Power Consumption

48V DC, 5W per KEM

Power Scheme

•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.

Connecting a Single KEM to the Cisco Unified IP Phone

To connect a single KEM to the Cisco Unified IP Phone, follow these steps:

Procedure

Step 1 Position the phone so that the front of the phone is facing up.

Step 2 Connect one end of the KEM spine connector to the Accessory Connector on the Cisco Unified IP Phone. Step 3 Connect the other end of the KEM spine connector to the KEM as shown in Figure 4-1.

Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 8.5 (SIP)

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