Figure 1. Key Expansion Module with Single LCD Screen

The following table lists the phones and the number of key expansion modules that each model supports.

Table 1. Cisco IP Phones and Supported Cisco IP Phone 8800 Key Expansion Module

Cisco IP Phone Model

Supported Number of Key Expansion Modules and Buttons

Cisco IP Phone 8851

2; single LCD screen, 18 line keys, two pages, providing 72 buttons

Cisco IP Phone 8861

3; single LCD screen, 18 line keys, two pages, providing 108 buttons

Cisco IP Phone 8865

3; single LCD screen, 18 line keys, two pages, providing 108 buttons,

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 2. Power-Supply Compatibility for Cisco IP Phone 8800 Key Expansion Module

Configuration

802.3af Power over Ethernet (PoE)

802.3at PoE

Cisco IP Phone Power Cube 4

8851 with 1 key expansion module

Yes

Yes

Yes

8851with 2 key expansion modules

No

No

See the third note below

Yes

8861 with 1 key expansion module

No

Yes

Yes

8861 with 2 key expansion modules

No

Yes

See the first note below

Yes

8861 with 3 key expansion modules

No

Yes

See the first note below

Yes

  • The fast-charging feature on the back USB does not work when more than one key 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 key expansion module is attached to a Cisco IP Phone 8861, unless Cisco Universal PoE (UPoE) is used.

  • Cisco IP Phone 8851 with 2 key expansion modules works 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.

Key Expansion Module buttons and hardware

Figure 2. Cisco IP Phone Key Expansion Module (Single LCD) Buttons and Hardware
Cisco IP Phone Key Expansion Module buttons and hardware

The following table describes the features of the key expansion module.

Table 3. Key Expansion Modules Buttons and Hardware

LCD screen—Displays the phone number, speed-dial number (or name or other text label), phone service, or phone feature assigned to each button.

Icons that indicate line status resemble (in both appearance and function) the icons on the phone to which the key expansion module is attached.

1

Lighted buttons—Line buttons. Each button or pair of buttons corresponds to one line. The lights beneath each button indicate the state of the corresponding line as follows:

  • Line button light off—Button is not configured.

  • Line button green steady LED—Line is configured correctly is in idle state.

  • Line button red steady LED—Line in use and have an active call on it.

  • Line button amber steady/blinking LED—A configuration error occurred when this feature was being set up.

2

Shift buttons—2 buttons. The button for page 1 is labeled as 1 and the button for page 2 is labeled as 2. The lights in each button indicate the state of the page as follows:

  • Page 1 button green steady LED—Page is in view.

  • Page 1 button light off—Page is not in view.

  • Page 1 button amber steady LED—Page is not in view with one or more alerting calls on the page.

Column modes

If you are using the Cisco IP Phone 8800 Key Expansion Module, two-column mode is the default on the Cisco IP Phone 8800 Key Expansion Module.

One-Column Mode

One-column mode in Cisco IP Phone 8851/8861 Key Expansion Module and Cisco IP Phone 8865 Key Expansion Module—Each button on the right of the screen is assigned to a speed-dial number (or name or other text label), phone service, or phone feature. In this configuration, the key expansion module displays up to 14 items on page 1, and up to 14 items on page 2.

Figure 3. Cisco IP Phone 8851/8861 Key Expansion Module
Figure 4. Cisco IP Phone 8865 Key Expansion Module

Two--Column Mode

If you are using Cisco IP Phone 8800 Key Expansion Module single-LCD screen expansion module, you can set up the module in two-column mode.

In two-column mode, each button on the left and right of the screen is assigned to a speed-dial number (or name or other text label), phone service, or phone feature. In this configuration, the key expansion module displays up to 18 items on page 1, and up to 18 items on page 2

Figure 5. Cisco IP Phone 8800 Key Expansion Module
Single-LCD screen expansion module in two column mode

Allocate a Key Expansion Module type with the phone menu

You can assign the type of key expansion module that the phone supports.

1

Press Applications .

2

Select User preferences > Attendant console preferences > KEM type.

3

Select the key expansion module type.
4

Press Save.

Adjust the screen brightness

1

Press Applications .

2

Select Settings > Brightness.

3

Press Save.

Modify a speed dial on a Key Expansion Module

If one of the line keys on the key expansion module is configured as a speed dial, you can press the line key to change the speed-dial number. You can also verify this change by checking the Unit field on the phone web page.

1

Press a key expansion module speed-dial key for at least 2 seconds.

2

In the Speed-Dial window, add the speed-dial name and phone number to call when you press the key expansion module speed-dial key.

3

Press Save.