Transmode is a leading provider of optical networking solutions for the transport of data, voice and video traffic, based on CWDM and DWDM technology (Coarse/Dense Wavelength Division Multiplexing). Transmode's comprehensive product portfolio and strong global organization enable their customers to grow the capacity and improve the service level of their regional, metro and metro-access networks, on a cost-efficient basis without compromising on functionality. Transmode's unique systems are deployed in a customer base consisting of mobile network operators, service providers, large enterprises and public institutions across Europe, the Americas and Asia.

Amadeus has provided the company with a range of support in strategic planning, marketing and recruitment over the years. In April 2005, Transmode Systems merged with Lumentis AB to form Transmode Holdings, with the objective of enabling the combined company to provide end-to-end solutions for their customers. The company is well-positioned for continued success, particularly as the growth of consumer broadband creates a requirement for higher and higher bandwidths at the edge of the network.

Amadeus led an international syndicate of investors in a second round of financing in 2001, raising $6.5 million for Transmode Systems. Transmode completed a further round of financing, totalling $15 million, led by Harbourvest Partners, which Amadeus also participated in. Simon Cornwell is a non-executive director on the Board of Transmode.