Key Expansion Module Buttons and Hardware
Figure 26: Cisco IP Phone Key Expansion Module Buttons and Hardware
The following table describes the features of the key expansion module.
Table 26: 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.
Lighted buttons—18 line buttons. Depending on the mode, each button or pair of buttons
corresponds to one line (same as on the phone). For mode information, see the descriptions of
1-column and 2-column mode that follow this table. The lights beneath each button indicate the
state of the corresponding line as follows:
• light off—Line available or a call is ringing on an inactive page.
• green steady LED—Line in use by you, you have a call on hold, or a call being
transferred.
• red steady LED—Line in use by someone else or someone else has a call on hold on
a shared line.
• amber steady LED—Line ringing.
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