Migrating to Calico UK Broadband   Back-end BT ADLS Connection To be able to migrate from your existing ADSL service to the Calico UK Broadband services, you must currently use the same back-end BT ADSL connection as the Calico service you wish to move to. We cannot migrate you directly from broadband services that don't use the BT network.   We use the following BT connections:   Calico UK Service BT Connection   512kb/s   IPStream Home 500 1024kb/s   IPStream Home 1000 2048kb/s   IPStream Home 2000 1024kb/s +   IPStream Office 1000 2048kb/s +   IPStream Office 2000   Your current supplier should be able to tell you which back-end BT connection your current service uses.   If you do not currently use the BT network, you can still apply for a new connection if you want to take advantage of Calico UK's excellent service and value.   Migration Process The process for migrating to Calico UK's broadband is as follows: First, contact your current provider to determine the back-end BT connection, to ensure that you can migrate to us. Next, ask your current provider for your unique MAC code and your provider's full company name. We need this information to be able to migrate you. We will then select the Calico UK service that matches your existing package, as in the above table, and start the migration.