CHICAGO — AT&T has signed a long-term lease renewal for 171, 386 square feet within the Apparel Center, which is located at 350 North Orleans St. in Chicago. The space houses a training center, a call center and other office functions in support of AT&T’s telecommunications and U-Verse product offerings. AT&T, which has been a tenant in the building since 1989, is the largest tenant within the facility. George Kotrogiannis and Kurt Kittner of Jones Lang LaSalle represented AT&T in the lease transaction. CB Richard Ellis represented the landlord, Mart Properties, which is a subsidiary of Vornado Realty Trust, in negotiations. Additional terms of the lease were not disclosed.