Hersteller von SIP / VoIP Hardware für die Telefonie. Telefone, Mobilteile, Tastenerweiterungen und analog/SIP Konverter.
NESTEC setzt bei seinen Gesamtlösungen für SIP / VoIP ganz auf die Lösungen des Herstellers: kostengünstig * multifunktionell * professionell verarbeitet * komfortabel

Grandstream Networks, Inc. is an award-winning designer and ISO 9001 certified manufacturer of next generation IP voice & video products for broadband networks. Grandstream's products deliver superb sound and picture quality, rich telephony features, full compliance with industry standards, and broad interoperability with most service providers and 3rd party SIP based VoIP products. Grandstream is consistently recognized in the VoIP industry for their innovation, affordability and superior value in their products.

Incorporated in 2002, Grandstream has been growing profitably and rapidly since 2003, its first year of product shipment. As of Q1 2008, Grandstream has experienced a strong 3-digit year-over-year compound growth rate (CAGR) in revenue since 2003. Grandstream has a comprehensive and expanding portfolio of innovative IP voice and video products, top tier customers, large deployed base, and established distribution channels worldwide.

Grandstream Networks is a private company headquartered in Brookline, MA with offices in Los Angeles, Dallas and China.