BILLERICA, MA- Aastra Telecom, US signs takes 45,000 sf at 8 Federal St. under a five-year lease. The 80,000-sf building was acquired by Berwind Property Group Ltd last June from Nortel Networks and has no other tenants.

WILMINGTON, MA-General Eastern Industries leases 58,345 sf at 500 Research Dr. The company, a subsidiary of GE Industrial, is relocating from a smaller space in Woburn, MA.

CHICAGO-The largest Downtown office lease this year, a deal in the neighborhood of $70 million, takes 211,000 sf of space at the old Quaker Tower off the market. Occupancy is back up to 81% when two moves are taken into account.

PHOENIX-Price Kong & Co. will exit East Osborn Road and head to Country Club Manor. The Phoenix accounting firm takes 12,782 sf in a deal structured by brokers from Insignia/ESG and Cushman & Wakefield of Arizona.