/mcpProcedure Step 1 Connect the new Cisco IP Phone to the network. Step 2 Select option 2 to replace an existing phone. Note If Administrator has not configured Activation Code based device onboarding or phone migration is done on the 11.5(1)SU8 version of Unified Communications Manager which does not support activation code, the phone displays the screen to enter the primary extension. Step 3 Enter the primary extension number of your phone. Step 4 Enter the Authentication Code. Migration starts after a successful authentication. After successful migration, the phone restarts with configuration settings migrated from your old phone. Note Consider a scenario where the On-premise Onboarding Method option is selected as Auto registration in the Device Defaults Configuration page. While performing the phone migration, if you press either the EXIT or BACK button when an error message is displayed, it takes you directly to the initial phone migration screen after a possible expected delay. This delay is due to the phones trying to re-register to the Unified CM as auto-registration is disabled in the Unified Communications Manager server. Note If there are more than one device for the user with the same primary extension, user will be prompted to choose the device to be migrated. For more information, see Phone Migration Service—User Assigned with Multiple Devices, on page 712. Migrate Phones Using Phone Migration Service (Phone Users) Phone users can use this procedure to migrate to a new Cisco IP Phone using a non-IVR method. After you plug in the phones to the network, the phone will attempt to boot and configure itself. From the default phone load, users get options to select either the 'Provision a new phone' or 'Replace an existing phone'. An end user should perform migration only if they are the owner of the old device. Note If you decide to choose the Retain Existing Phone(s)' option from the When Provisioning a Replacement Phone for an End User enterprise parameter and you migrate the phone using the Phone Template, the old migrated phone configurations details will not be listed in the Find List page. Only the successful new phone migration details are listed. This is because the Retain Existing Phone(s) option is applicable only for Phone Migrations based on Phone Types and not based on the Phone Template. Note Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs 709 Device Management Migrate Phones Using Phone Migration Service (Phone Users)