Is a device that combines multiple network voice and data communications functions into a single device.[1] Targeted at small and medium enterprises (SMEs), the MSBG integrates critical functions such as routing, VoIP, and security (virtual private networking, firewall, intrusion detection/prevention) into a single fault-tolerant platform, with a common control & management plane oriented around services. An MSBG may also include functionality such as web/e-mail server and filtering, storage, and wireless networking.