Graeme MacArthur

Metaswitch Networks Ltd. is a holding company, which engages in the development of systems management and networking software solutions. The firm specializes in the design of networking, session border control, infrastructure, management tools, and application development systems. Its solution areas encompass Internet protocol multimedia subsystems, telephony, original equipment manufacturing, and hosted business services. The company was founded by Ian S. Ferguson and Christopher John Mairs in 1981 and is headquartered in Enfield, the United Kingdom.

MetaSwitch Ltd. delivers telephony switching products and commercial applications for packet and circuit-switched networks. . The company was founded in 1981 and is headquartered in Enfield, the United Kingdom.

Open Cloud Ltd. develops real-time business support systems. Its product suite comprises of Rhino Telecom Application Server, Rhino Service Interaction Server, Rhino Sentinel, and Rhino Visual Service Architect. The firm also offers consulting, implementation, training, and support services. The company was founded by David Ferry, David Page, and David Long in 2000 and is headquartered in Cambridge, the United Kingdom.