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One of the best Cisco Unified Communications Manager VoIP features is Extension Mobility in my personal opinion. It allows you to temporarily configure another IP Phone as your own by logging in to that phone. Once logged in you will have your number, speed dials and etc. onto that phone, and if you are working as teleworker you would know to appreciate those kind of options. Following text describes how to configure CallManager 6.0 to support Extension Mobility.

Task 1: Verify Extension Mobility Service is Running

Step 1: From the Navigation menu select Cisco Unified CallManager Serviceability

Step 2: Select Tools>Control Center – Feature Services

Step 3: Make sure that the Cisco Extension Mobility service shows status Activated

Task 2: Configure Extension Mobility Service

Step 1: From the Navigation menu select Cisco Unified CallManager Administration

Step 2: Select Device>Device Settings>Phone Services

Step 3: Click Add New

Step 4: In the Service Name field, type Extension Mobility
Step 5: In the Service Description field, type Login and logout service
Step 6: In the Service URL field, Enter the following URL: http://YOURCUCMIPADDRESS/emapp/EMAppServlet?device=#DEVICENAME#

Step 7: Click Save

Task 3: Modify Enterprise Parameters to Reflect IP Address of CallManager (remove DNS reliance)

Step 1: Select System>Enterprise Parameters

Step 2: Under Phone URL parameters, change all fields to reflect IP addresses instead of hostnames. Change ONLY the host name, not the reset of the field.

Step 3: Click Save
Step 4: Click Ok from the pop-up warning.
Step 5: Click Reset
Step 6: In the pop-up window select Reset
Step 7: Click Close

Task 4: Create Device Profile Default for Each Phone Model that shall Support Cisco Extension Mobility (this step is optional)

Step 1: Select Device>Device Settings>Default Device Profile
Step 2: From the drop down list, select the phone model to be configured, for example, Cisco 7960.
Step 3: Under Description, enter a description of this profile.
Step 4: Under Phone Button Template, select Standard 7960 SCCP.
Step 5: Click Save
Step 6: Repeat for each model phone to be configured

Task 5: Create Device User Profile for a User

Step 1:  Choose Device>Device Settings>Device Profile and click Add New.

Step 2: From the drop down list, select the phone model to be configured, for example, Cisco 7960
Step 3: Click Next
Step 4: Enter a Device Profile Name (in this example KemalSanjtaProfile).
Step 5: From the Phone Button Template field, select Standard 7960 SCCP.
Step 6: Click Save.

Step 7: On the left hand side of the screen, click the link Line [1] – Add a new DN.

Step 8: Choose a valid DN from your NIP, enter that DN in the Directory Number field.
Step 9: Under Route Partition, select your city’s Headquarters Partition.

Step 10: Under Directory Number Settings choose a CSS of appropriate access.

Step 11:  Enter any Call Forward and Call Pickup Settings as necessary.
Step 12: In the Display (Internal Caller ID)
Step 13: Click Save.
Step 14: From the Related Links: menu, select Subscribe/Unsubscribe Services.

Step 15: In the Select a Service, select Extension Mobility, then click Next.

Step 16: Click Subscribe.

Step 17: Click Save.
Step 18: Repeat steps 7-13 for any additional lines.

Task 6: Associate User Device Profile to a User

Step 1: From the menu, select User Management>End User.

Step 2: Click Find
Step 3: Select the user from the list that matches the profile that was created.

Step 4: Under Extension Mobility>Available Profiles, select the profile that was created in the previous exercise and move it to the Controlled Profiles selection (in our example it is KemalSanjtaProfile).

Step 5: Under Default Profile, select the profile.
Step 6: Click Save.

Task 7: Configure and Subscribe Cisco Unified Ip Phones to Service and Enable it.

Step 1:  Select Device>Phone from the menu.

Step 2:  Select the phone from the list of devices.

Step 3: In the Related Links: field, select Subscribe/Unsubscribe Services and click Go

Step 4: In the pop-up window, under Service Information, in the Select a Service pull down menu, select Extension Mobility.

Step 5: Click Next
Step 6: Click Subscribe

Step 7: Click Save

Step 8: Close the pop-up window

Step 9: Under Extension Information , check the Enable Extension Mobility box.
Step 10: Under the Logout Profile field, select – Use Current Device Settings –
Step 11: Click Save.

Step 12: Click Ok from the pop-up warning.
Step 13: Click Reset
Step 14: In the pop-up window select Reset.
Step 15: Click Close.

Note: This post has been updated on 12/03/2010 in order to describe how to assign Extension Mobility Phone service to Device Profile (including screenshots).