LAB5: Verifying VoiceViewExpress & IMAP
Cisco Unified Communications Technical Training
Page 47 of 171
Phone features – Overlay DNs
Overlay DNs are used in a scenario where a single button should be used to answer calls to multiple
numbers. This is typically true for lower end phones that have fewer buttons. Follow the steps below to
configure the operator’s phone with overlay for extensions 275, 251 and 252.
1. Launch the “Voice” configuration page on CCA
2. Go to the “Users” tab. Select the more option for aip. This is the operator phone for this lab.
3. On button 4, select the type as none to allow extension 252 to be added as an overlay.
4. On button 3, select the type as Overlay and click on “Overlay” button under Extension (s) column
5. On the new window “Overlay - aip”, add extensions 275, 251 and 252. Then click on OK for the
“Menu” page and then click on Apply at the bottom of the Voice configuration page.
6. Once the changes are applied, check aip’s IP Phone and ensure that an overlay button is created. The
overlay line label will display the first extension you selected in the overlay menu.
7. Verify the overlay functionality. Make calls to 275, 251, and 252 and ensure that this overlay line
rings.
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