In the UK a Migration Authorisation Code (MAC) is a unique identifier used by broadband consumers when they wish to switch broadband service provider. The code was introduced by Ofcom and BT as a voluntary code of practice and is now standard practice for most service providers.

Currently (Jan 2006) the only reasons why a losing service provider (LSP) may refuse to issue a MAC are that:

• The customer has failed standard checks to validate that he is the account holder
• The broadband service contract has been terminated
• The LSP has already submitted a cease request to BTW for the broadband service
• The account holder is deceased

Unlike the Porting Authorisation Code issued by voice service providers, broadband service providers can offer a MAC yet not actually sign up to the code of practice. Even when signed up to the code of practice, providers can currently charge for providing a MAC (fees of £35-£50 are not uncommon).

Definition of Terms

• SP - Service Provider
• GSP - Gaining Service Provider
• LSP - Losing Service Provider
• BTW - BT Wholesale
• MAC - Migration Authorisation Code
• Customer - The user of the broadband connection
• Account holder - The person or entity with contractual responsibility for the broadband service
• Migration - Transfer of a broadband customer between SPs, where both SPs provide service over the same BT copper loop

External links

• http://www.ofcom.org.uk/advice/codes/bbm_cop/ - Ofcom Broadband migration - Industry code of practice