Configure Device Mobility
With Cisco Unified Communications Manager, a site or a physical location gets identified by using various settings, such as locations, regions, calling search spaces, and media resources. Cisco Unified IP Phones that reside at a particular site get statically configured with these settings, and Cisco Unified Communications Manager uses these settings for proper call establishment, call routing, media resource selection, and so forth. However, when phones get moved from the home location to a remote location, these phones retain the home settings that are statically configured on the phones. Cisco Unified Communications Manager uses these home settings for the phones that are located at the remote site, which may cause problems with call routing, codec selection, media resource selection, and other call processing functions.
You can configure device mobility, which allows Cisco Unified Communications Manager to determine whether the phone is at its home location or at a roaming location. Cisco Unified Communications Manager uses the device IP subnets to determine the exact location of the phone. By enabling device mobility, mobile users can roam from one site to another and acquire the site-specific settings. Cisco Unified Communications Manager then uses these dynamically allocated settings for call routing, codec section, media resource selection, and so forth.
For more information on device mobility, see the Device Mobility Feature and the Device Mobility.
Perform the following steps to configure device mobility.
Review the related device mobility documentation.
Enable the device mobility mode in the Service Parameter Configuration or Phone Configuration window. ((choose Cisco CallManager service) or )
Configure physical locations. ()
Configure device mobility groups. ()
Configure subnets and assign one or more device pools to a subnet in the Device Mobility Info Configuration window. ()
In the Device Pool Configuration window, update your device pools for device mobility settings, if you have not already done so. ()
If you have not already done so, update your dial plans for device mobility; for example, update calling search spaces, AAR group settings, and so on. ()