Ericsson plans to buy Vonage for $ 6.2 billion

Deutsche Telekom prepares to leave T-Systems

Telekom and O2 depend on Vodafone

Ralph Dommermuth examines the takeover of the 1 & 1 mother

Ralph Dommermuth examines the takeover of the 1 & 1 mother

Ralph Dommermuth examines the takeover of the 1 & 1 mother