Christian von Reventlow

Avaya GmbH & Co. KG provides communication solutions. It offers data transmission, video conferencing, security system, customer relationship management, messaging, networking and computer-based telephony services. The company is headquartered in Frankfurt am Main, Germany.

Avaya, Inc. provides real-time business collaboration and communications solutions. The company offers customer engagement, team engagement, networking, cloud, and real-time communication solutions. It offers professional, support, enterprise cloud and managed services. The company was founded on February 16, 2000 and is headquartered in Durham, CA.

Telstra Corp. Ltd. engages in the provision of telecommunications and information services for domestic and international customers. It operates through the following segments: Telstra Consumer and Small Business, Telstra Enterprise, Networks and IT, Telstra InfraCo, and All Others. The Telstra Consumer and Small Business segment comprises of telecommunication products, services, and solutions across mobiles, fixed and mobile broadband, telephony and play TV/IPTV, and digital content to consumer and small business customers in Australia. The Telstra Enterprise segment sells and contracts management for medium to large businesses, and government customers globally. The Networks and IT segment is responsible for the overall planning, design, engineering architecture, and construction of Telstra networks, technology, and information technology solutions. The Telstra InfraCo segment provides a range of telecommunication products and services delivered over Telstra networks and associated support systems to other carriers, carriage service providers, and internet service providers. The All Other segments include certain items of income and expense relating to multiple reportable segments that are recorded by its corporate areas. The company was founded in 1901 and is headquartered in Melbourne, Australia.