Deutsche Telekom Capital Partners, the corporate venture capital arm of telecommunications firm Deutsche Telekom, invested $10m in Dynamic Signal, the US-based developer of a communications platform for employees, on Tuesday. Dynamic Signal had raised a total of $88m as of February this year when it secured $36.5m from investors including M12, Cisco Investments and Time Warner Investments, respective subsidiaries of software provider Microsoft, networking technology producer Cisco and entertainment and media group Time Warner.

Cazena, the US-based creator of…