The deal marks the first acquisition for the company since Nokia and Siemens merged their communications businesses in June 2006.
The 180 staff currently working for Atrica will be integrated into the larger company’s team.
Nokia Siemens Networks’ said the deal will allow it to offer end-to-end Carrier Ethernet Transport systems.
"The products of Atrica and Nokia Siemens Networks complement each other perfectly," said Bernd Schumacher, head of IP transport at Nokia Siemens Networks.
"They will help our customers cut the complexity and related costs of data-optimised networks."
Schumacher said Carrier Ethernet products were one of the fastest growing segments of the telecommunications market and leading analysts expected it to grow 15 per cent a year.
The acquisition is expected to take place before 1 January 2008, subject to regulatory approvals.
Cotton seedling freezes to death as Chang'e-4 shuts down for the Moon's 14-day lunar night
Fortnite easily out-earns PUBG, Assassin's Creed Odyssey and Red Dead Redemption 2 in 2018
Meteor showers as a service will be visible for about 100 kilometres in all directions
Saturn's rings only formed in the past 100 million years, suggests analysis of Cassini space probe data
New findings contradict conventional belief that Saturn's rings were formed along with the planet about 4.5 billion years ago