SAN FRANCISCO--(BUSINESS WIRE)--Mobile voice company Spoke Phone today announced it has raised $US4.5 million in Series A funding. : SAN FRANCISCO--(BUSINESS WIRE)--Mobile voice company Spoke Phone today announced it has raised $US4.5 million in Series A funding, in a capital raising round led by Australian venture capital firm, Marbruck Investments, with support from New Zealand-based Icehouse Ventures and Sir Stephen Tindall’s K1W1 fund. Spoke Phone is a mobile-first business phone system that offers the same powerful features and integrations available to desktop users via their mobile phones.