SBC Communications has acquired Callisma, a Palo Alto, California-based network consulting company serving enterprise customers. Callisma, which has 125 employees, specializes in operations management, VoIP, internetworking, security, and storage solutions. Callisma consultants will augment the existing SBC consulting organization, and an SBC sales and service workforce that already has attained more than 4,300 advanced data services certifications. Financial terms were not disclosed. http://www.sbc.com
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