BT has won a 40.2 million deal with Norfolk County Council (NCC).
The two part deal will see BT provide voice and data services (32.9 million) to Norfolk County Council and an internet platform (7.3 million) to its 450 schools.
The five year deal with NCC will see BT Global Services provide voice and IP telephony to 20,000 workers at over 1,000 sites in the county.
The upgraded system will support the council's growing demand for key applications such as email, enterprise resource planning, and improved worker mobility, said BT.
"Norfolk County Council is delivering more and more services to citizens over the internet and via other multimedia channels," said Tony Williams, Norfolk County Council Cabinet Member for Corporate and Commercial Services.
He added: "By upgrading our voice, data and contact centre technologies, BT is helping us strengthen our ability to provide services via the web and to support our staff to work in more flexible ways, helping us to provide effective and efficient services for Norfolk people."
BT will also supply and manage the Norfolk Schools Internet Exchange to over 450 schools in the county.
The secure internet platform will provide teachers, students, and educational bodies with email, video conferencing, and online learning tools.
