Abstract: A call control entity (“entity”) communicates with Internet Protocol (IP) phones. Upon receiving from an IP phone a headset connect message indicating that a headset is connected to the IP phone and including a headset identifier of the headset, the entity determines whether there is stored in a call control database a mapping between the headset identifier and a user identifier associated with a user, the mapping configured to provide access to an existing IP phone configuration profile in the call control database. If the mapping exist, the entity completes an extension mobility auto login of the user through the IP phone, which results in acquiring the user identifier from the IP phone. Responsive to completing the extension mobility auto login, the entity accesses the existing IP phone configuration profile based on the user identifier and the mapping, and configures the IP phone with the existing IP phone configuration profile.