HSL (Hay Systems Ltd) is an independent mobile network operator and provider of mobile services to organisations and individuals around the world. Formed in 1999, HSL has evolved into a mobile operator having originally been established as an SMS gateway service provider. SMS remains a core activity through the Mobile Messaging division of the company. However, due to the growth and development of technical capabilities HSL now operates mobile network services and has the capability to self-provide certain aspects of its own mobile network including SMSC platforms and GSM femtocell base stations through the Mobile Networks division of HSL.
HSL's head office is located on the outskirts of Edinburgh, Scotland. In addition to their Scottish base they also have sales offices in London, Paris, Frankfurt, Dubai and Wellington.
HEAD acoustics GmbH was founded in 1986 by Prof. Dr.-Ing. Klaus Genuit in Aachen, Germany. For more than 20 years, they have operated in the area of head-related recording and playback systems and aurally-accurate analysis of sound events, as well as in the field of communication measurement technology. They have developed special measurement and analysis methods for the determination of the transmission characteristics of voice-controlled systems.
Huber + Suhner (UK) Limited is part of The Huber + Suhner Group, a global supplier of components and systems for electrical and optical connectivity. They offer technical expertise in radio frequency technology, fibre-optics, cables and polymers and are able to support customers from early design concepts, prototypes, pre-production, volume production, deployment to post deployment and in service support.
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