Speakerbus plc is a leading provider of high quality voice and video mission critical communications. Turret Solutions, Global Intercom, Hoot 'n' Holler, PTT, Speakerbus’ latest release of firmware for the iG330 Digital E1/T1 Gateway offers support for the provision of ‘Y’ shape circuits (multi-leg ring down), using IP. Businesses with multiple locations that interact with a global client base or are implementing an multi-site business continuity strategy can benefit from this new functionality.