Be Broadband will begin migrating customers over to its new core network by the end of February 2012, it has been reported.
ISPreview.co.uk reports that the broadband provider is aiming to improve capacity, network resilience and also support new features such as IPv6 with a program of upgrades.
And Be Broadband subscribers will be migrated, one telephone exchange at a time, over the coming year.
Originally, the firm said the process would take seven months to complete, but Be Broadband Managing Director Chris Stening says it will now last into 2013.
He said "plenty of notice" will be given to affected customers, although they should not be affected by the changes.
"To make things as straightforward as possible, as the migration takes place, we'll be supporting both new and 'old' static IP addresses for 30 days, allowing everyone plenty of time to make the move when their turn comes," Be Broadband stated.
"We'll also be changing the way we provide static IP addresses, bringing us in line with industry best practice and helping those customers who choose to source and configure their own routers."