Founded in 1975, Toshiba Telecommunication Systems Division (TSD) was a division of Toshiba America Information Systems Inc. (TAIS). This, in turn, is an independent operating company owned by Toshiba America Inc., a subsidiary of Toshiba Corporation.

Headquartered in Irvine, California, TSD is a manufacturer of IP business telephone systems, designed for small to medium-sized businesses and larger enterprises with multiple locations. Its 'Strata CIX IP' business telephone systems and related applications are sold by a network of Authorized Toshiba Dealers throughout the United States and Latin America.

Some of Toshiba Telecommunications Systems Division's (TSD's) products include:

Frost & Sullivan - Toshiba Executive Q&A: http://www.frost.com/prod/servlet/market-insight-top.pag?docid=210945608

Gartner 2010 Unified Communications Magic Quadrant: http://www.gartner.com/technology/media-products/reprints/microsoft/vol10/article19/article19.html

Gartner 2010 Corporate Telephony Magic Quadrant: http://www.gartner.com/technology/media-products/reprints/microsoft/vol14/article1/article1.html

Nemertes 2010 Pilothouse Award Winner: https://web.archive.org/web/20101002144731/http://nemertes.com/press_releases/nemertes_research_announces_2010_pilothouse_awards

Phone Plus - Columbia Southern University Case Study: http://www.phoneplusmag.com/articles/2010/07/case-study-toshiba.aspx